Filter Point Filter Band ™ Uniform Section Enviromat ™ Articulating Block Hydrocast ™ Armor Units Fabric-formed Concrete Erosion Control and Armoring Systems Product Guide TM
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Hydrotex™
Fabric-formed Concrete Erosion Control and Armoring Systems
Hydrotex systems outperform rip rap,gabions, precast concrete blocks, and concrete slope paving, yet are less expensive and far easier to install.
Hydrotex Fabric Forms are filled in place with fineaggregate concrete, delivering the durability andperformance of concrete without the costly anddifficult installation process of a conventionally-formed concrete slope paving.
Hydrotex systems are not only less expensive than rip rap, gabions, precast concrete blocks, orconventionally-formed concrete slope paving, theyalso deliver significant stability and performanceadvantages once installed.
Hydrotex systems can: • adapt to variable subgrades, • relieve uplift pressures, • reduce wave run up, and • manage channel velocities.
The result is a more cost-effective erosion controlsystem with greater hydraulic efficiency, higherpermissible velocities, and improved stability,durability, and performance.
A Wide Range of SolutionsConstructed of high strength, specially woven fabric,Hydrotex™ Fabric Forms come in a variety of form styles.Each style has been engineered to match a certain set ofproject parameters, allowing you to specify different formsto accommodate differing site conditions. HydrotexLinings and Mats are used to create erosion and scourprevention systems ranging from ditch linings to coastalrevetments. Hydrocast™ Armor Units are monolithicconcrete structures that are used for the construction ofseawalls and other civil and marine applications.
Proven in the Lab and in the FieldHydrotex products have been extensively evaluated in anadvanced hydraulics laboratory at a leading researchfacility. Flume testing of Hydrotex Linings and Mats hasderived precise design values to assist you in selecting theappropriate fabric form style and mass per unit area toresist the expected hydraulic loading. Hydrotex productshave proven their value, quality, and integrity in literallythousands of projects worldwide.
Backed with Technical ExpertiseSynthetex’s team of technical, manufacturing, and fieldpersonnel work closely with engineers, owners, andcontractors to derive the best design solutions. Our designphilosophy demands solutions that meet strictperformance, aesthetic, cost, and construction criteria.You are assured of quality materials, superior technicalsupport, competitive prices, and a commitment toexcellence. Our team is able to provide technical anddesign assistance, system specifications, cost estimates,and construction drawings.
Applications:Drainage Ditches Channels and CanalsStreams, Rivers, and BayousLakes and ReservoirsCoastal and Intracoastal ShorelinesJetties and GroinsDikes and LeveesDune ProtectionBeach RenourishmentSeawall and Bulkhead Scour ProtectionBoat Launching RampsWildlife CrossingsLow-water Stream CrossingsEmbankmentsUnderwater Pipeline CoversBridge Abutments and PiersCheck DamsDams and SpillwaysPonds and Holding BasinsLandfill CapsDown ChutesWater Control Structures
Filter Point
Filter Band™
Uniform Section
Enviromat™
Articulating Block
Hydrocast™ Armor Units
Fabric-formed Concrete Erosion Control and Armoring Systems
Product Guide
The information contained herein is furnished without charge or obligation, and the recipient assumes all responsibility for its use. Because conditions or use and handling mayvary and are beyond our control, we make no representation about, and are not responsible for, the accuracy or reliability of said information or the performance of any product.Any specifications, properties or applications listed are provided as information only and in no way modify, enlarge or create any warranty. Nothing contained herein is to beconstrued as permission or as a recommendation to infringe any patent.
© 2016 Synthetex LLC • Synthetex, Hydrotex, Hydrocast, Environ, and Filter Band are trademarks of Synthetex LLC • Printed in USA.
5550 Triangle Parkway • Suite 220 • Peachtree Corners • Georgia • 30092Tel: 1.800.253.0561 or 770.399.5051 Fax: 770.394.5999http://www.synthetex.com E-mail: [email protected]
Note: Values shown are typical and will varywith weight of concrete and field conditions.Custom products of different thicknesses anddimensions can be manufactured.
Hydrotex Linings, Mats, and Armor Unitsare filled in place by pumping fineaggregate concrete into fabric forms. Theresults are reduced material andequipment costs, faster installation, anddependable erosion and scour prevention.
Whether you’re lining a channel;protecting landfill containment systems,underwater pipelines or dams; repairingbridge scour; or armoring a shorelineagainst storm damage, Synthetex LLC hasthe form that meets your needs.
For complete specifications and our Construction and QualityControl Manual, please visit our web site at: www.synthetex.com
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rap, gabions, precast concrete blocks, and conventionalconcrete slope paving because of several factors. It can mitigateuplift forces due to outflow and excess pore water pressure,reduce hydraulic uplift by slowing channel velocities, andconform to soil contours to reduce the potential for scour.
Reduced Uplift Pressures:Many styles of Hydrotex Linings and Mats can accommodatesevere uplift pressures. These uplift pressures often cause thefailure of conventional concrete slope paving. Unlike traditionalmethods, fabric forms can be manufactured with built-in filterdrains that reduce the mean phreatic level and pore pressureswithin the underlying soil.
Management of Hydraulic Flow:Many Hydrotex Fabric Forms construct concrete linings andmats with deeply patterned surfaces. These patterns create ahigh coefficient of hydraulic friction. The result is reduced
flow velocity and reduced wave run-up. These surfacecharacteristics impart stability to the system by reducingvelocities and also mean that the designer can affect the flowcharacteristics of a channel, creating the opportunity for an“engineered” hydraulic system. By choosing the correct styleof form, in-channel flow can be slowed, reducingdownstream velocities and discharge turbulence. Or anhydraulically-efficient, smooth form (such as Uniform Section)can be chosen to maximize drainage from a given area.
Adaptation to Soil Contours:Filled-in-place fabric forms accommodate uneven contours,curves, and subgrades at the time that they are filled.Consequently, the soil and the concrete protection are inintimate contact, reducing the chance of underscour. Someforms create discrete concrete units, attached to each otherwith fabric perimeters and/or embedded cables. As a result, theconcrete mats can articulate to adapt to uneven settlement.
Ease of Installation:Hydrotex Fabric Forms are delivered to the job siteready-to-fill and require no additional forming materials.Installation consists of preparing the area, laying out thefabric forms, and filling them with concrete through asmall-line concrete pump. Wood or steel forming is notrequired. The fabric forms themselves assure that theconcrete assumes the proper configuration, contours,dimensions, and thickness. Hydrotex Linings and Mats donot require steel reinforcement or concrete finishing. Asmall crew can handle the installation, and fabric formscan be installed without dewatering the site.
Simple Job Mobilization:Fabric forms are extremely lightweight, so they can berapidly shipped anywhere in the world. The “weight”component of a fabric-formed system, the fine aggregateconcrete, is readily available from concrete suppliers
worldwide. Once the site is prepared, simple hand tools anda concrete pump are all that is needed to fill the forms. Andin areas with difficult or restricted access, the concrete canbe pumped to the forms from as far away as 800 feet (250meters). Because of the low mobilization costs, it is practicalto install fabric forms on jobs as small as a hundred squarefeet (10 square meters). Regardless of the job size, the easeof mobilization and transportation and the reducedequipment and labor requirements mean that the job goes infaster and at less cost per square unit of protected area.
Environmental Compatibility:Fabric forms are designed to provide the least possibleenvironmental impact. The fabric used in the forms allowsexcess mixing water to escape while retaining the cementsolids, fine aggregate, and sand. EL and EB Linings havebeen designed to provide defined areas that can be cut outafter installation so that native vegetation can be planted or
The Advantages of Hydrotex Linings,Mats, and Armor Units
Stability:Hydrotex Fabric Forms, manufactured by Synthetex LLC, havebeen used in millions of square feet of installations worldwide,some in the most severe conditions. In the process they haveestablished a new benchmark in erosion protection byoutperforming traditional concrete slope paving, gabions,precast concrete blocks, and rip rap.
Thousands of installations and extensive flume testing haveproven that Hydrotex fabric-formed concrete erosion protectionsystems outperform all alternatives. Hydrotex Linings and Mats,with permissible shear stress in excess of 60 lbs/ft2 (2.87kN/m2), provide the high degree of stability needed to resist thestresses associated with high velocity flows. Hydrotexfabric-formed concrete has greater hydraulic efficiency than rip
Filter Point (FP) LiningsFilter Point Linings with filtering points (drains) provideerosion resistant, permeable concrete linings for ditches,channels, canals, streams, rivers, ponds, lakes, reservoirs,marinas, and port and harbor areas. Filter Point Liningshave a cobbled surface and a relatively high coefficient ofhydraulic friction in order to achieve lower flow velocitiesand to reduce wave run-up. The filter points provide for therelief of hydrostatic uplift pressures, increasing thesystem’s stability.
Filter Point Linings were the first style of fabric form forconcrete. In 1965, a Dutch patent was issued for“fabric-formed slope paving.” The form suggested bythis patent was later refined to create the first “filterpoint” lining.
As the use of this technology has spread worldwide, avariety of other forms have been developed to meetspecific job requirements.
Filter Band™ (FB) LiningsFilter Band Linings are similar to Filter Point Linings,providing an effective and highly permeable concretelining that resists erosive forces.
Filter Band differs from Filter Point in that the formcreates interconnected, tubular concrete elements thatare separated by large, interwoven filter bands. The filterbands provide for greater reduction of uplift pressuresthan filter points. Also, the biaxial alignment of thetubular elements creates two directionally-determinedcoefficients of hydraulic friction. As a result, Filter Bandachieves a greater reduction of flow velocity or waveenergy than Filter Point.
Filter Band concrete linings are specified in situationssimilar to those for which Filter Point might be specified,but which also require greater relief of uplift pressures,higher reduction of flow velocities, or greater reduction ofwave run-up.
Uniform Section (US) LiningsUniform Section Linings are similar to traditional concreteslope paving. They create a solid, high quality concretelining with a relatively low coefficient of hydraulicfriction and a uniform cross section. Uniform SectionLinings are used to reduce the infiltration of aggressivewaste and chemical fluids into or out of open channelsand basins. They are also used to reduce exfiltration inarid regions where open channels and basins requirewatertight linings.
Uniform Section Linings are resistant to most leachatesand chemicals. They protect geosynthetic liners frommechanical damage, exposure to UV light, andfreeze-thaw cycles and also serve as a ballast layer.These self-supporting, high strength linings permitconstruction on steep side slopes and replace the use ofclay or sand as liner protection. Concrete filling of theforms can be performed with a minimum of traffic onthe liner, and the tensile strength and abrasionresistance of the fabric protect the liner from thepumped concrete.
Enviromat™ (EL and EB) LiningsEnviromat Linings are installed to provide protectionagainst periodic high flows. After installation, vegetationcan be planted within the open structure of the lining.Enviromat Linings are used in drainage ditches and onthe upper slopes of channels, canals, lakes, reservoirs,rivers, and other water courses as well as forembankments subject to heavy run-off.
Enviromat Linings are comprised of concrete-filledelements and unfilled areas that allow for theestablishment of vegetation. Once the concrete sets, theunfilled areas are opened by cutting the fabric and arethen planted or filled with topsoil and seeded. Within agrowing season a vegetated cover will normally extendover the lining, resulting in an erosion control system withthe hydraulic, ecological, and aesthetic features desired.EL Linings have a greater open area than EB, so avegetated cover will be established more rapidly. However,EB Linings are designed to articulate and are moretolerant of uneven settlement after installation.
Articulating Block (AB) MatsArticulating Block Mats form cable-reinforced concreteblock mattresses that resist erosive forces. They are ofteninstalled where a revetment is exposed to attack by waveaction and are used to protect shorelines, canals, rivers,lakes, reservoirs, underwater pipelines, bridge piers, andother civil and marine structures from propeller wash,ship wakes, waves, currents, and high velocity flows.They are also used in environmental construction forlandfill caps, downchutes, and collector channels.
Articulating Block Fabric Forms consist of a series ofcompartments linked by interwoven perimeters. Groutducts interconnect the compartments. High strengthrevetment cables are installed between and through thecompartments and grout ducts. Once filled, AB Matbecomes a mattress of pillow-shaped, rectangularconcrete blocks. The interwoven perimeters betweenthe blocks serve as hinges to permit articulation. Thecables remain embedded in the concrete blocks to linkthe blocks together and facilitate articulation.
seeded to create a more natural appearance. And HydrotexLinings and Mats are free of hazardous projections thatcould endanger pedestrians, animals, vehicles, or boats.
Hydrotex fabric-formed concrete erosion controlsystems outperform all traditional solutions andreduce total system cost. The expertise andknowledge that Synthetex has gained fromthousands of installations worldwide areincorporated into every form we manufacture.Time and again, in many different types ofprojects, our erosion control systems haveperformed “as specified” and deliveredpredictable erosion control.
Hydrocast™ Armor UnitsHydrocast Armor Units are monolithic concrete structureswhich replace heavy rip rap and large precast concretearmor units, such as tetrapods. When the rectangularfabric forms are filled, they assume a flattened cylindricalcross section and range in size from roughly 180 poundsto in excess of 70 tons (80-64,000 kg) per unit. Availablein custom sizes and shapes, the dimensions of the formcontrol the concrete armor unit’s length, width, height,and weight.
Armor Units have the mass and stability for theconstruction of gravity seawalls and revetments, groins,levees, dikes, dams, check dams, and other civil andmarine structures subject to attack by waves orrapidly flowing water. Since they are filled in place,they adapt to variations in the subgrade and are idealfor preventing or repairing scour at bridge piers andabutments, culvert outfalls, or underwater pipelines.Hydrocast installations do not require dewatering, a crucial advantage in emergency repair situations.
EL
EB
rap, gabions, precast concrete blocks, and conventionalconcrete slope paving because of several factors. It can mitigateuplift forces due to outflow and excess pore water pressure,reduce hydraulic uplift by slowing channel velocities, andconform to soil contours to reduce the potential for scour.
Reduced Uplift Pressures:Many styles of Hydrotex Linings and Mats can accommodatesevere uplift pressures. These uplift pressures often cause thefailure of conventional concrete slope paving. Unlike traditionalmethods, fabric forms can be manufactured with built-in filterdrains that reduce the mean phreatic level and pore pressureswithin the underlying soil.
Management of Hydraulic Flow:Many Hydrotex Fabric Forms construct concrete linings andmats with deeply patterned surfaces. These patterns create ahigh coefficient of hydraulic friction. The result is reduced
flow velocity and reduced wave run-up. These surfacecharacteristics impart stability to the system by reducingvelocities and also mean that the designer can affect the flowcharacteristics of a channel, creating the opportunity for an“engineered” hydraulic system. By choosing the correct styleof form, in-channel flow can be slowed, reducingdownstream velocities and discharge turbulence. Or anhydraulically-efficient, smooth form (such as Uniform Section)can be chosen to maximize drainage from a given area.
Adaptation to Soil Contours:Filled-in-place fabric forms accommodate uneven contours,curves, and subgrades at the time that they are filled.Consequently, the soil and the concrete protection are inintimate contact, reducing the chance of underscour. Someforms create discrete concrete units, attached to each otherwith fabric perimeters and/or embedded cables. As a result, theconcrete mats can articulate to adapt to uneven settlement.
Ease of Installation:Hydrotex Fabric Forms are delivered to the job siteready-to-fill and require no additional forming materials.Installation consists of preparing the area, laying out thefabric forms, and filling them with concrete through asmall-line concrete pump. Wood or steel forming is notrequired. The fabric forms themselves assure that theconcrete assumes the proper configuration, contours,dimensions, and thickness. Hydrotex Linings and Mats donot require steel reinforcement or concrete finishing. Asmall crew can handle the installation, and fabric formscan be installed without dewatering the site.
Simple Job Mobilization:Fabric forms are extremely lightweight, so they can berapidly shipped anywhere in the world. The “weight”component of a fabric-formed system, the fine aggregateconcrete, is readily available from concrete suppliers
worldwide. Once the site is prepared, simple hand tools anda concrete pump are all that is needed to fill the forms. Andin areas with difficult or restricted access, the concrete canbe pumped to the forms from as far away as 800 feet (250meters). Because of the low mobilization costs, it is practicalto install fabric forms on jobs as small as a hundred squarefeet (10 square meters). Regardless of the job size, the easeof mobilization and transportation and the reducedequipment and labor requirements mean that the job goes infaster and at less cost per square unit of protected area.
Environmental Compatibility:Fabric forms are designed to provide the least possibleenvironmental impact. The fabric used in the forms allowsexcess mixing water to escape while retaining the cementsolids, fine aggregate, and sand. EL and EB Linings havebeen designed to provide defined areas that can be cut outafter installation so that native vegetation can be planted or
The Advantages of Hydrotex Linings,Mats, and Armor Units
Stability:Hydrotex Fabric Forms, manufactured by Synthetex LLC, havebeen used in millions of square feet of installations worldwide,some in the most severe conditions. In the process they haveestablished a new benchmark in erosion protection byoutperforming traditional concrete slope paving, gabions,precast concrete blocks, and rip rap.
Thousands of installations and extensive flume testing haveproven that Hydrotex fabric-formed concrete erosion protectionsystems outperform all alternatives. Hydrotex Linings and Mats,with permissible shear stress in excess of 60 lbs/ft2 (2.87kN/m2), provide the high degree of stability needed to resist thestresses associated with high velocity flows. Hydrotexfabric-formed concrete has greater hydraulic efficiency than rip
Filter Point (FP) LiningsFilter Point Linings with filtering points (drains) provideerosion resistant, permeable concrete linings for ditches,channels, canals, streams, rivers, ponds, lakes, reservoirs,marinas, and port and harbor areas. Filter Point Liningshave a cobbled surface and a relatively high coefficient ofhydraulic friction in order to achieve lower flow velocitiesand to reduce wave run-up. The filter points provide for therelief of hydrostatic uplift pressures, increasing thesystem’s stability.
Filter Point Linings were the first style of fabric form forconcrete. In 1965, a Dutch patent was issued for“fabric-formed slope paving.” The form suggested bythis patent was later refined to create the first “filterpoint” lining.
As the use of this technology has spread worldwide, avariety of other forms have been developed to meetspecific job requirements.
Filter Band™ (FB) LiningsFilter Band Linings are similar to Filter Point Linings,providing an effective and highly permeable concretelining that resists erosive forces.
Filter Band differs from Filter Point in that the formcreates interconnected, tubular concrete elements thatare separated by large, interwoven filter bands. The filterbands provide for greater reduction of uplift pressuresthan filter points. Also, the biaxial alignment of thetubular elements creates two directionally-determinedcoefficients of hydraulic friction. As a result, Filter Bandachieves a greater reduction of flow velocity or waveenergy than Filter Point.
Filter Band concrete linings are specified in situationssimilar to those for which Filter Point might be specified,but which also require greater relief of uplift pressures,higher reduction of flow velocities, or greater reduction ofwave run-up.
Uniform Section (US) LiningsUniform Section Linings are similar to traditional concreteslope paving. They create a solid, high quality concretelining with a relatively low coefficient of hydraulicfriction and a uniform cross section. Uniform SectionLinings are used to reduce the infiltration of aggressivewaste and chemical fluids into or out of open channelsand basins. They are also used to reduce exfiltration inarid regions where open channels and basins requirewatertight linings.
Uniform Section Linings are resistant to most leachatesand chemicals. They protect geosynthetic liners frommechanical damage, exposure to UV light, andfreeze-thaw cycles and also serve as a ballast layer.These self-supporting, high strength linings permitconstruction on steep side slopes and replace the use ofclay or sand as liner protection. Concrete filling of theforms can be performed with a minimum of traffic onthe liner, and the tensile strength and abrasionresistance of the fabric protect the liner from thepumped concrete.
Enviromat™ (EL and EB) LiningsEnviromat Linings are installed to provide protectionagainst periodic high flows. After installation, vegetationcan be planted within the open structure of the lining.Enviromat Linings are used in drainage ditches and onthe upper slopes of channels, canals, lakes, reservoirs,rivers, and other water courses as well as forembankments subject to heavy run-off.
Enviromat Linings are comprised of concrete-filledelements and unfilled areas that allow for theestablishment of vegetation. Once the concrete sets, theunfilled areas are opened by cutting the fabric and arethen planted or filled with topsoil and seeded. Within agrowing season a vegetated cover will normally extendover the lining, resulting in an erosion control system withthe hydraulic, ecological, and aesthetic features desired.EL Linings have a greater open area than EB, so avegetated cover will be established more rapidly. However,EB Linings are designed to articulate and are moretolerant of uneven settlement after installation.
Articulating Block (AB) MatsArticulating Block Mats form cable-reinforced concreteblock mattresses that resist erosive forces. They are ofteninstalled where a revetment is exposed to attack by waveaction and are used to protect shorelines, canals, rivers,lakes, reservoirs, underwater pipelines, bridge piers, andother civil and marine structures from propeller wash,ship wakes, waves, currents, and high velocity flows.They are also used in environmental construction forlandfill caps, downchutes, and collector channels.
Articulating Block Fabric Forms consist of a series ofcompartments linked by interwoven perimeters. Groutducts interconnect the compartments. High strengthrevetment cables are installed between and through thecompartments and grout ducts. Once filled, AB Matbecomes a mattress of pillow-shaped, rectangularconcrete blocks. The interwoven perimeters betweenthe blocks serve as hinges to permit articulation. Thecables remain embedded in the concrete blocks to linkthe blocks together and facilitate articulation.
seeded to create a more natural appearance. And HydrotexLinings and Mats are free of hazardous projections thatcould endanger pedestrians, animals, vehicles, or boats.
Hydrotex fabric-formed concrete erosion controlsystems outperform all traditional solutions andreduce total system cost. The expertise andknowledge that Synthetex has gained fromthousands of installations worldwide areincorporated into every form we manufacture.Time and again, in many different types ofprojects, our erosion control systems haveperformed “as specified” and deliveredpredictable erosion control.
Hydrocast™ Armor UnitsHydrocast Armor Units are monolithic concrete structureswhich replace heavy rip rap and large precast concretearmor units, such as tetrapods. When the rectangularfabric forms are filled, they assume a flattened cylindricalcross section and range in size from roughly 180 poundsto in excess of 70 tons (80-64,000 kg) per unit. Availablein custom sizes and shapes, the dimensions of the formcontrol the concrete armor unit’s length, width, height,and weight.
Armor Units have the mass and stability for theconstruction of gravity seawalls and revetments, groins,levees, dikes, dams, check dams, and other civil andmarine structures subject to attack by waves orrapidly flowing water. Since they are filled in place,they adapt to variations in the subgrade and are idealfor preventing or repairing scour at bridge piers andabutments, culvert outfalls, or underwater pipelines.Hydrocast installations do not require dewatering, a crucial advantage in emergency repair situations.
EL
EB
rap, gabions, precast concrete blocks, and conventionalconcrete slope paving because of several factors. It can mitigateuplift forces due to outflow and excess pore water pressure,reduce hydraulic uplift by slowing channel velocities, andconform to soil contours to reduce the potential for scour.
Reduced Uplift Pressures:Many styles of Hydrotex Linings and Mats can accommodatesevere uplift pressures. These uplift pressures often cause thefailure of conventional concrete slope paving. Unlike traditionalmethods, fabric forms can be manufactured with built-in filterdrains that reduce the mean phreatic level and pore pressureswithin the underlying soil.
Management of Hydraulic Flow:Many Hydrotex Fabric Forms construct concrete linings andmats with deeply patterned surfaces. These patterns create ahigh coefficient of hydraulic friction. The result is reduced
flow velocity and reduced wave run-up. These surfacecharacteristics impart stability to the system by reducingvelocities and also mean that the designer can affect the flowcharacteristics of a channel, creating the opportunity for an“engineered” hydraulic system. By choosing the correct styleof form, in-channel flow can be slowed, reducingdownstream velocities and discharge turbulence. Or anhydraulically-efficient, smooth form (such as Uniform Section)can be chosen to maximize drainage from a given area.
Adaptation to Soil Contours:Filled-in-place fabric forms accommodate uneven contours,curves, and subgrades at the time that they are filled.Consequently, the soil and the concrete protection are inintimate contact, reducing the chance of underscour. Someforms create discrete concrete units, attached to each otherwith fabric perimeters and/or embedded cables. As a result, theconcrete mats can articulate to adapt to uneven settlement.
Ease of Installation:Hydrotex Fabric Forms are delivered to the job siteready-to-fill and require no additional forming materials.Installation consists of preparing the area, laying out thefabric forms, and filling them with concrete through asmall-line concrete pump. Wood or steel forming is notrequired. The fabric forms themselves assure that theconcrete assumes the proper configuration, contours,dimensions, and thickness. Hydrotex Linings and Mats donot require steel reinforcement or concrete finishing. Asmall crew can handle the installation, and fabric formscan be installed without dewatering the site.
Simple Job Mobilization:Fabric forms are extremely lightweight, so they can berapidly shipped anywhere in the world. The “weight”component of a fabric-formed system, the fine aggregateconcrete, is readily available from concrete suppliers
worldwide. Once the site is prepared, simple hand tools anda concrete pump are all that is needed to fill the forms. Andin areas with difficult or restricted access, the concrete canbe pumped to the forms from as far away as 800 feet (250meters). Because of the low mobilization costs, it is practicalto install fabric forms on jobs as small as a hundred squarefeet (10 square meters). Regardless of the job size, the easeof mobilization and transportation and the reducedequipment and labor requirements mean that the job goes infaster and at less cost per square unit of protected area.
Environmental Compatibility:Fabric forms are designed to provide the least possibleenvironmental impact. The fabric used in the forms allowsexcess mixing water to escape while retaining the cementsolids, fine aggregate, and sand. EL and EB Linings havebeen designed to provide defined areas that can be cut outafter installation so that native vegetation can be planted or
The Advantages of Hydrotex Linings,Mats, and Armor Units
Stability:Hydrotex Fabric Forms, manufactured by Synthetex LLC, havebeen used in millions of square feet of installations worldwide,some in the most severe conditions. In the process they haveestablished a new benchmark in erosion protection byoutperforming traditional concrete slope paving, gabions,precast concrete blocks, and rip rap.
Thousands of installations and extensive flume testing haveproven that Hydrotex fabric-formed concrete erosion protectionsystems outperform all alternatives. Hydrotex Linings and Mats,with permissible shear stress in excess of 60 lbs/ft2 (2.87kN/m2), provide the high degree of stability needed to resist thestresses associated with high velocity flows. Hydrotexfabric-formed concrete has greater hydraulic efficiency than rip
Filter Point (FP) LiningsFilter Point Linings with filtering points (drains) provideerosion resistant, permeable concrete linings for ditches,channels, canals, streams, rivers, ponds, lakes, reservoirs,marinas, and port and harbor areas. Filter Point Liningshave a cobbled surface and a relatively high coefficient ofhydraulic friction in order to achieve lower flow velocitiesand to reduce wave run-up. The filter points provide for therelief of hydrostatic uplift pressures, increasing thesystem’s stability.
Filter Point Linings were the first style of fabric form forconcrete. In 1965, a Dutch patent was issued for“fabric-formed slope paving.” The form suggested bythis patent was later refined to create the first “filterpoint” lining.
As the use of this technology has spread worldwide, avariety of other forms have been developed to meetspecific job requirements.
Filter Band™ (FB) LiningsFilter Band Linings are similar to Filter Point Linings,providing an effective and highly permeable concretelining that resists erosive forces.
Filter Band differs from Filter Point in that the formcreates interconnected, tubular concrete elements thatare separated by large, interwoven filter bands. The filterbands provide for greater reduction of uplift pressuresthan filter points. Also, the biaxial alignment of thetubular elements creates two directionally-determinedcoefficients of hydraulic friction. As a result, Filter Bandachieves a greater reduction of flow velocity or waveenergy than Filter Point.
Filter Band concrete linings are specified in situationssimilar to those for which Filter Point might be specified,but which also require greater relief of uplift pressures,higher reduction of flow velocities, or greater reduction ofwave run-up.
Uniform Section (US) LiningsUniform Section Linings are similar to traditional concreteslope paving. They create a solid, high quality concretelining with a relatively low coefficient of hydraulicfriction and a uniform cross section. Uniform SectionLinings are used to reduce the infiltration of aggressivewaste and chemical fluids into or out of open channelsand basins. They are also used to reduce exfiltration inarid regions where open channels and basins requirewatertight linings.
Uniform Section Linings are resistant to most leachatesand chemicals. They protect geosynthetic liners frommechanical damage, exposure to UV light, andfreeze-thaw cycles and also serve as a ballast layer.These self-supporting, high strength linings permitconstruction on steep side slopes and replace the use ofclay or sand as liner protection. Concrete filling of theforms can be performed with a minimum of traffic onthe liner, and the tensile strength and abrasionresistance of the fabric protect the liner from thepumped concrete.
Enviromat™ (EL and EB) LiningsEnviromat Linings are installed to provide protectionagainst periodic high flows. After installation, vegetationcan be planted within the open structure of the lining.Enviromat Linings are used in drainage ditches and onthe upper slopes of channels, canals, lakes, reservoirs,rivers, and other water courses as well as forembankments subject to heavy run-off.
Enviromat Linings are comprised of concrete-filledelements and unfilled areas that allow for theestablishment of vegetation. Once the concrete sets, theunfilled areas are opened by cutting the fabric and arethen planted or filled with topsoil and seeded. Within agrowing season a vegetated cover will normally extendover the lining, resulting in an erosion control system withthe hydraulic, ecological, and aesthetic features desired.EL Linings have a greater open area than EB, so avegetated cover will be established more rapidly. However,EB Linings are designed to articulate and are moretolerant of uneven settlement after installation.
Articulating Block (AB) MatsArticulating Block Mats form cable-reinforced concreteblock mattresses that resist erosive forces. They are ofteninstalled where a revetment is exposed to attack by waveaction and are used to protect shorelines, canals, rivers,lakes, reservoirs, underwater pipelines, bridge piers, andother civil and marine structures from propeller wash,ship wakes, waves, currents, and high velocity flows.They are also used in environmental construction forlandfill caps, downchutes, and collector channels.
Articulating Block Fabric Forms consist of a series ofcompartments linked by interwoven perimeters. Groutducts interconnect the compartments. High strengthrevetment cables are installed between and through thecompartments and grout ducts. Once filled, AB Matbecomes a mattress of pillow-shaped, rectangularconcrete blocks. The interwoven perimeters betweenthe blocks serve as hinges to permit articulation. Thecables remain embedded in the concrete blocks to linkthe blocks together and facilitate articulation.
seeded to create a more natural appearance. And HydrotexLinings and Mats are free of hazardous projections thatcould endanger pedestrians, animals, vehicles, or boats.
Hydrotex fabric-formed concrete erosion controlsystems outperform all traditional solutions andreduce total system cost. The expertise andknowledge that Synthetex has gained fromthousands of installations worldwide areincorporated into every form we manufacture.Time and again, in many different types ofprojects, our erosion control systems haveperformed “as specified” and deliveredpredictable erosion control.
Hydrocast™ Armor UnitsHydrocast Armor Units are monolithic concrete structureswhich replace heavy rip rap and large precast concretearmor units, such as tetrapods. When the rectangularfabric forms are filled, they assume a flattened cylindricalcross section and range in size from roughly 180 poundsto in excess of 70 tons (80-64,000 kg) per unit. Availablein custom sizes and shapes, the dimensions of the formcontrol the concrete armor unit’s length, width, height,and weight.
Armor Units have the mass and stability for theconstruction of gravity seawalls and revetments, groins,levees, dikes, dams, check dams, and other civil andmarine structures subject to attack by waves orrapidly flowing water. Since they are filled in place,they adapt to variations in the subgrade and are idealfor preventing or repairing scour at bridge piers andabutments, culvert outfalls, or underwater pipelines.Hydrocast installations do not require dewatering, a crucial advantage in emergency repair situations.
EL
EB
rap, gabions, precast concrete blocks, and conventionalconcrete slope paving because of several factors. It can mitigateuplift forces due to outflow and excess pore water pressure,reduce hydraulic uplift by slowing channel velocities, andconform to soil contours to reduce the potential for scour.
Reduced Uplift Pressures:Many styles of Hydrotex Linings and Mats can accommodatesevere uplift pressures. These uplift pressures often cause thefailure of conventional concrete slope paving. Unlike traditionalmethods, fabric forms can be manufactured with built-in filterdrains that reduce the mean phreatic level and pore pressureswithin the underlying soil.
Management of Hydraulic Flow:Many Hydrotex Fabric Forms construct concrete linings andmats with deeply patterned surfaces. These patterns create ahigh coefficient of hydraulic friction. The result is reduced
flow velocity and reduced wave run-up. These surfacecharacteristics impart stability to the system by reducingvelocities and also mean that the designer can affect the flowcharacteristics of a channel, creating the opportunity for an“engineered” hydraulic system. By choosing the correct styleof form, in-channel flow can be slowed, reducingdownstream velocities and discharge turbulence. Or anhydraulically-efficient, smooth form (such as Uniform Section)can be chosen to maximize drainage from a given area.
Adaptation to Soil Contours:Filled-in-place fabric forms accommodate uneven contours,curves, and subgrades at the time that they are filled.Consequently, the soil and the concrete protection are inintimate contact, reducing the chance of underscour. Someforms create discrete concrete units, attached to each otherwith fabric perimeters and/or embedded cables. As a result, theconcrete mats can articulate to adapt to uneven settlement.
Ease of Installation:Hydrotex Fabric Forms are delivered to the job siteready-to-fill and require no additional forming materials.Installation consists of preparing the area, laying out thefabric forms, and filling them with concrete through asmall-line concrete pump. Wood or steel forming is notrequired. The fabric forms themselves assure that theconcrete assumes the proper configuration, contours,dimensions, and thickness. Hydrotex Linings and Mats donot require steel reinforcement or concrete finishing. Asmall crew can handle the installation, and fabric formscan be installed without dewatering the site.
Simple Job Mobilization:Fabric forms are extremely lightweight, so they can berapidly shipped anywhere in the world. The “weight”component of a fabric-formed system, the fine aggregateconcrete, is readily available from concrete suppliers
worldwide. Once the site is prepared, simple hand tools anda concrete pump are all that is needed to fill the forms. Andin areas with difficult or restricted access, the concrete canbe pumped to the forms from as far away as 800 feet (250meters). Because of the low mobilization costs, it is practicalto install fabric forms on jobs as small as a hundred squarefeet (10 square meters). Regardless of the job size, the easeof mobilization and transportation and the reducedequipment and labor requirements mean that the job goes infaster and at less cost per square unit of protected area.
Environmental Compatibility:Fabric forms are designed to provide the least possibleenvironmental impact. The fabric used in the forms allowsexcess mixing water to escape while retaining the cementsolids, fine aggregate, and sand. EL and EB Linings havebeen designed to provide defined areas that can be cut outafter installation so that native vegetation can be planted or
The Advantages of Hydrotex Linings,Mats, and Armor Units
Stability:Hydrotex Fabric Forms, manufactured by Synthetex LLC, havebeen used in millions of square feet of installations worldwide,some in the most severe conditions. In the process they haveestablished a new benchmark in erosion protection byoutperforming traditional concrete slope paving, gabions,precast concrete blocks, and rip rap.
Thousands of installations and extensive flume testing haveproven that Hydrotex fabric-formed concrete erosion protectionsystems outperform all alternatives. Hydrotex Linings and Mats,with permissible shear stress in excess of 60 lbs/ft2 (2.87kN/m2), provide the high degree of stability needed to resist thestresses associated with high velocity flows. Hydrotexfabric-formed concrete has greater hydraulic efficiency than rip
Filter Point (FP) LiningsFilter Point Linings with filtering points (drains) provideerosion resistant, permeable concrete linings for ditches,channels, canals, streams, rivers, ponds, lakes, reservoirs,marinas, and port and harbor areas. Filter Point Liningshave a cobbled surface and a relatively high coefficient ofhydraulic friction in order to achieve lower flow velocitiesand to reduce wave run-up. The filter points provide for therelief of hydrostatic uplift pressures, increasing thesystem’s stability.
Filter Point Linings were the first style of fabric form forconcrete. In 1965, a Dutch patent was issued for“fabric-formed slope paving.” The form suggested bythis patent was later refined to create the first “filterpoint” lining.
As the use of this technology has spread worldwide, avariety of other forms have been developed to meetspecific job requirements.
Filter Band™ (FB) LiningsFilter Band Linings are similar to Filter Point Linings,providing an effective and highly permeable concretelining that resists erosive forces.
Filter Band differs from Filter Point in that the formcreates interconnected, tubular concrete elements thatare separated by large, interwoven filter bands. The filterbands provide for greater reduction of uplift pressuresthan filter points. Also, the biaxial alignment of thetubular elements creates two directionally-determinedcoefficients of hydraulic friction. As a result, Filter Bandachieves a greater reduction of flow velocity or waveenergy than Filter Point.
Filter Band concrete linings are specified in situationssimilar to those for which Filter Point might be specified,but which also require greater relief of uplift pressures,higher reduction of flow velocities, or greater reduction ofwave run-up.
Uniform Section (US) LiningsUniform Section Linings are similar to traditional concreteslope paving. They create a solid, high quality concretelining with a relatively low coefficient of hydraulicfriction and a uniform cross section. Uniform SectionLinings are used to reduce the infiltration of aggressivewaste and chemical fluids into or out of open channelsand basins. They are also used to reduce exfiltration inarid regions where open channels and basins requirewatertight linings.
Uniform Section Linings are resistant to most leachatesand chemicals. They protect geosynthetic liners frommechanical damage, exposure to UV light, andfreeze-thaw cycles and also serve as a ballast layer.These self-supporting, high strength linings permitconstruction on steep side slopes and replace the use ofclay or sand as liner protection. Concrete filling of theforms can be performed with a minimum of traffic onthe liner, and the tensile strength and abrasionresistance of the fabric protect the liner from thepumped concrete.
Enviromat™ (EL and EB) LiningsEnviromat Linings are installed to provide protectionagainst periodic high flows. After installation, vegetationcan be planted within the open structure of the lining.Enviromat Linings are used in drainage ditches and onthe upper slopes of channels, canals, lakes, reservoirs,rivers, and other water courses as well as forembankments subject to heavy run-off.
Enviromat Linings are comprised of concrete-filledelements and unfilled areas that allow for theestablishment of vegetation. Once the concrete sets, theunfilled areas are opened by cutting the fabric and arethen planted or filled with topsoil and seeded. Within agrowing season a vegetated cover will normally extendover the lining, resulting in an erosion control system withthe hydraulic, ecological, and aesthetic features desired.EL Linings have a greater open area than EB, so avegetated cover will be established more rapidly. However,EB Linings are designed to articulate and are moretolerant of uneven settlement after installation.
Articulating Block (AB) MatsArticulating Block Mats form cable-reinforced concreteblock mattresses that resist erosive forces. They are ofteninstalled where a revetment is exposed to attack by waveaction and are used to protect shorelines, canals, rivers,lakes, reservoirs, underwater pipelines, bridge piers, andother civil and marine structures from propeller wash,ship wakes, waves, currents, and high velocity flows.They are also used in environmental construction forlandfill caps, downchutes, and collector channels.
Articulating Block Fabric Forms consist of a series ofcompartments linked by interwoven perimeters. Groutducts interconnect the compartments. High strengthrevetment cables are installed between and through thecompartments and grout ducts. Once filled, AB Matbecomes a mattress of pillow-shaped, rectangularconcrete blocks. The interwoven perimeters betweenthe blocks serve as hinges to permit articulation. Thecables remain embedded in the concrete blocks to linkthe blocks together and facilitate articulation.
seeded to create a more natural appearance. And HydrotexLinings and Mats are free of hazardous projections thatcould endanger pedestrians, animals, vehicles, or boats.
Hydrotex fabric-formed concrete erosion controlsystems outperform all traditional solutions andreduce total system cost. The expertise andknowledge that Synthetex has gained fromthousands of installations worldwide areincorporated into every form we manufacture.Time and again, in many different types ofprojects, our erosion control systems haveperformed “as specified” and deliveredpredictable erosion control.
Hydrocast™ Armor UnitsHydrocast Armor Units are monolithic concrete structureswhich replace heavy rip rap and large precast concretearmor units, such as tetrapods. When the rectangularfabric forms are filled, they assume a flattened cylindricalcross section and range in size from roughly 180 poundsto in excess of 70 tons (80-64,000 kg) per unit. Availablein custom sizes and shapes, the dimensions of the formcontrol the concrete armor unit’s length, width, height,and weight.
Armor Units have the mass and stability for theconstruction of gravity seawalls and revetments, groins,levees, dikes, dams, check dams, and other civil andmarine structures subject to attack by waves orrapidly flowing water. Since they are filled in place,they adapt to variations in the subgrade and are idealfor preventing or repairing scour at bridge piers andabutments, culvert outfalls, or underwater pipelines.Hydrocast installations do not require dewatering, a crucial advantage in emergency repair situations.
EL
EB
Hydrotex™
Fabric-formed Concrete Erosion Control and Armoring Systems
Hydrotex systems outperform rip rap,gabions, precast concrete blocks, and concrete slope paving, yet are less expensive and far easier to install.
Hydrotex Fabric Forms are filled in place with fineaggregate concrete, delivering the durability andperformance of concrete without the costly anddifficult installation process of a conventionally-formed concrete slope paving.
Hydrotex systems are not only less expensive than rip rap, gabions, precast concrete blocks, orconventionally-formed concrete slope paving, theyalso deliver significant stability and performanceadvantages once installed.
Hydrotex systems can: • adapt to variable subgrades, • relieve uplift pressures, • reduce wave run up, and • manage channel velocities.
The result is a more cost-effective erosion controlsystem with greater hydraulic efficiency, higherpermissible velocities, and improved stability,durability, and performance.
A Wide Range of SolutionsConstructed of high strength, specially woven fabric,Hydrotex™ Fabric Forms come in a variety of form styles.Each style has been engineered to match a certain set ofproject parameters, allowing you to specify different formsto accommodate differing site conditions. HydrotexLinings and Mats are used to create erosion and scourprevention systems ranging from ditch linings to coastalrevetments. Hydrocast™ Armor Units are monolithicconcrete structures that are used for the construction ofseawalls and other civil and marine applications.
Proven in the Lab and in the FieldHydrotex products have been extensively evaluated in anadvanced hydraulics laboratory at a leading researchfacility. Flume testing of Hydrotex Linings and Mats hasderived precise design values to assist you in selecting theappropriate fabric form style and mass per unit area toresist the expected hydraulic loading. Hydrotex productshave proven their value, quality, and integrity in literallythousands of projects worldwide.
Backed with Technical ExpertiseSynthetex’s team of technical, manufacturing, and fieldpersonnel work closely with engineers, owners, andcontractors to derive the best design solutions. Our designphilosophy demands solutions that meet strictperformance, aesthetic, cost, and construction criteria.You are assured of quality materials, superior technicalsupport, competitive prices, and a commitment toexcellence. Our team is able to provide technical anddesign assistance, system specifications, cost estimates,and construction drawings.
Applications:Drainage Ditches Channels and CanalsStreams, Rivers, and BayousLakes and ReservoirsCoastal and Intracoastal ShorelinesJetties and GroinsDikes and LeveesDune ProtectionBeach RenourishmentSeawall and Bulkhead Scour ProtectionBoat Launching RampsWildlife CrossingsLow-water Stream CrossingsEmbankmentsUnderwater Pipeline CoversBridge Abutments and PiersCheck DamsDams and SpillwaysPonds and Holding BasinsLandfill CapsDown ChutesWater Control Structures
Filter Point
Filter Band™
Uniform Section
Enviromat™
Articulating Block
Hydrocast™ Armor Units
Fabric-formed Concrete Erosion Control and Armoring Systems
Product Guide
The information contained herein is furnished without charge or obligation, and the recipient assumes all responsibility for its use. Because conditions or use and handling mayvary and are beyond our control, we make no representation about, and are not responsible for, the accuracy or reliability of said information or the performance of any product.Any specifications, properties or applications listed are provided as information only and in no way modify, enlarge or create any warranty. Nothing contained herein is to beconstrued as permission or as a recommendation to infringe any patent.
© 2016 Synthetex LLC • Synthetex, Hydrotex, Hydrocast, Environ, and Filter Band are trademarks of Synthetex LLC • Printed in USA.
5550 Triangle Parkway • Suite 220 • Peachtree Corners • Georgia • 30092Tel: 1.800.253.0561 or 770.399.5051 Fax: 770.394.5999http://www.synthetex.com E-mail: [email protected]
Note: Values shown are typical and will varywith weight of concrete and field conditions.Custom products of different thicknesses anddimensions can be manufactured.
Hydrotex Linings, Mats, and Armor Unitsare filled in place by pumping fineaggregate concrete into fabric forms. Theresults are reduced material andequipment costs, faster installation, anddependable erosion and scour prevention.
Whether you’re lining a channel;protecting landfill containment systems,underwater pipelines or dams; repairingbridge scour; or armoring a shorelineagainst storm damage, Synthetex LLC hasthe form that meets your needs.
For complete specifications and our Construction and QualityControl Manual, please visit our web site at: www.synthetex.com
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rap, gabions, precast concrete blocks, and conventionalconcrete slope paving because of several factors. It can mitigateuplift forces due to outflow and excess pore water pressure,reduce hydraulic uplift by slowing channel velocities, andconform to soil contours to reduce the potential for scour.
Reduced Uplift Pressures:Many styles of Hydrotex Linings and Mats can accommodatesevere uplift pressures. These uplift pressures often cause thefailure of conventional concrete slope paving. Unlike traditionalmethods, fabric forms can be manufactured with built-in filterdrains that reduce the mean phreatic level and pore pressureswithin the underlying soil.
Management of Hydraulic Flow:Many Hydrotex Fabric Forms construct concrete linings andmats with deeply patterned surfaces. These patterns create ahigh coefficient of hydraulic friction. The result is reduced
flow velocity and reduced wave run-up. These surfacecharacteristics impart stability to the system by reducingvelocities and also mean that the designer can affect the flowcharacteristics of a channel, creating the opportunity for an“engineered” hydraulic system. By choosing the correct styleof form, in-channel flow can be slowed, reducingdownstream velocities and discharge turbulence. Or anhydraulically-efficient, smooth form (such as Uniform Section)can be chosen to maximize drainage from a given area.
Adaptation to Soil Contours:Filled-in-place fabric forms accommodate uneven contours,curves, and subgrades at the time that they are filled.Consequently, the soil and the concrete protection are inintimate contact, reducing the chance of underscour. Someforms create discrete concrete units, attached to each otherwith fabric perimeters and/or embedded cables. As a result, theconcrete mats can articulate to adapt to uneven settlement.
Ease of Installation:Hydrotex Fabric Forms are delivered to the job siteready-to-fill and require no additional forming materials.Installation consists of preparing the area, laying out thefabric forms, and filling them with concrete through asmall-line concrete pump. Wood or steel forming is notrequired. The fabric forms themselves assure that theconcrete assumes the proper configuration, contours,dimensions, and thickness. Hydrotex Linings and Mats donot require steel reinforcement or concrete finishing. Asmall crew can handle the installation, and fabric formscan be installed without dewatering the site.
Simple Job Mobilization:Fabric forms are extremely lightweight, so they can berapidly shipped anywhere in the world. The “weight”component of a fabric-formed system, the fine aggregateconcrete, is readily available from concrete suppliers
worldwide. Once the site is prepared, simple hand tools anda concrete pump are all that is needed to fill the forms. Andin areas with difficult or restricted access, the concrete canbe pumped to the forms from as far away as 800 feet (250meters). Because of the low mobilization costs, it is practicalto install fabric forms on jobs as small as a hundred squarefeet (10 square meters). Regardless of the job size, the easeof mobilization and transportation and the reducedequipment and labor requirements mean that the job goes infaster and at less cost per square unit of protected area.
Environmental Compatibility:Fabric forms are designed to provide the least possibleenvironmental impact. The fabric used in the forms allowsexcess mixing water to escape while retaining the cementsolids, fine aggregate, and sand. EL and EB Linings havebeen designed to provide defined areas that can be cut outafter installation so that native vegetation can be planted or
The Advantages of Hydrotex Linings,Mats, and Armor Units
Stability:Hydrotex Fabric Forms, manufactured by Synthetex LLC, havebeen used in millions of square feet of installations worldwide,some in the most severe conditions. In the process they haveestablished a new benchmark in erosion protection byoutperforming traditional concrete slope paving, gabions,precast concrete blocks, and rip rap.
Thousands of installations and extensive flume testing haveproven that Hydrotex fabric-formed concrete erosion protectionsystems outperform all alternatives. Hydrotex Linings and Mats,with permissible shear stress in excess of 60 lbs/ft2 (2.87kN/m2), provide the high degree of stability needed to resist thestresses associated with high velocity flows. Hydrotexfabric-formed concrete has greater hydraulic efficiency than rip
Filter Point (FP) LiningsFilter Point Linings with filtering points (drains) provideerosion resistant, permeable concrete linings for ditches,channels, canals, streams, rivers, ponds, lakes, reservoirs,marinas, and port and harbor areas. Filter Point Liningshave a cobbled surface and a relatively high coefficient ofhydraulic friction in order to achieve lower flow velocitiesand to reduce wave run-up. The filter points provide for therelief of hydrostatic uplift pressures, increasing thesystem’s stability.
Filter Point Linings were the first style of fabric form forconcrete. In 1965, a Dutch patent was issued for“fabric-formed slope paving.” The form suggested bythis patent was later refined to create the first “filterpoint” lining.
As the use of this technology has spread worldwide, avariety of other forms have been developed to meetspecific job requirements.
Filter Band™ (FB) LiningsFilter Band Linings are similar to Filter Point Linings,providing an effective and highly permeable concretelining that resists erosive forces.
Filter Band differs from Filter Point in that the formcreates interconnected, tubular concrete elements thatare separated by large, interwoven filter bands. The filterbands provide for greater reduction of uplift pressuresthan filter points. Also, the biaxial alignment of thetubular elements creates two directionally-determinedcoefficients of hydraulic friction. As a result, Filter Bandachieves a greater reduction of flow velocity or waveenergy than Filter Point.
Filter Band concrete linings are specified in situationssimilar to those for which Filter Point might be specified,but which also require greater relief of uplift pressures,higher reduction of flow velocities, or greater reduction ofwave run-up.
Uniform Section (US) LiningsUniform Section Linings are similar to traditional concreteslope paving. They create a solid, high quality concretelining with a relatively low coefficient of hydraulicfriction and a uniform cross section. Uniform SectionLinings are used to reduce the infiltration of aggressivewaste and chemical fluids into or out of open channelsand basins. They are also used to reduce exfiltration inarid regions where open channels and basins requirewatertight linings.
Uniform Section Linings are resistant to most leachatesand chemicals. They protect geosynthetic liners frommechanical damage, exposure to UV light, andfreeze-thaw cycles and also serve as a ballast layer.These self-supporting, high strength linings permitconstruction on steep side slopes and replace the use ofclay or sand as liner protection. Concrete filling of theforms can be performed with a minimum of traffic onthe liner, and the tensile strength and abrasionresistance of the fabric protect the liner from thepumped concrete.
Enviromat™ (EL and EB) LiningsEnviromat Linings are installed to provide protectionagainst periodic high flows. After installation, vegetationcan be planted within the open structure of the lining.Enviromat Linings are used in drainage ditches and onthe upper slopes of channels, canals, lakes, reservoirs,rivers, and other water courses as well as forembankments subject to heavy run-off.
Enviromat Linings are comprised of concrete-filledelements and unfilled areas that allow for theestablishment of vegetation. Once the concrete sets, theunfilled areas are opened by cutting the fabric and arethen planted or filled with topsoil and seeded. Within agrowing season a vegetated cover will normally extendover the lining, resulting in an erosion control system withthe hydraulic, ecological, and aesthetic features desired.EL Linings have a greater open area than EB, so avegetated cover will be established more rapidly. However,EB Linings are designed to articulate and are moretolerant of uneven settlement after installation.
Articulating Block (AB) MatsArticulating Block Mats form cable-reinforced concreteblock mattresses that resist erosive forces. They are ofteninstalled where a revetment is exposed to attack by waveaction and are used to protect shorelines, canals, rivers,lakes, reservoirs, underwater pipelines, bridge piers, andother civil and marine structures from propeller wash,ship wakes, waves, currents, and high velocity flows.They are also used in environmental construction forlandfill caps, downchutes, and collector channels.
Articulating Block Fabric Forms consist of a series ofcompartments linked by interwoven perimeters. Groutducts interconnect the compartments. High strengthrevetment cables are installed between and through thecompartments and grout ducts. Once filled, AB Matbecomes a mattress of pillow-shaped, rectangularconcrete blocks. The interwoven perimeters betweenthe blocks serve as hinges to permit articulation. Thecables remain embedded in the concrete blocks to linkthe blocks together and facilitate articulation.
seeded to create a more natural appearance. And HydrotexLinings and Mats are free of hazardous projections thatcould endanger pedestrians, animals, vehicles, or boats.
Hydrotex fabric-formed concrete erosion controlsystems outperform all traditional solutions andreduce total system cost. The expertise andknowledge that Synthetex has gained fromthousands of installations worldwide areincorporated into every form we manufacture.Time and again, in many different types ofprojects, our erosion control systems haveperformed “as specified” and deliveredpredictable erosion control.
Hydrocast™ Armor UnitsHydrocast Armor Units are monolithic concrete structureswhich replace heavy rip rap and large precast concretearmor units, such as tetrapods. When the rectangularfabric forms are filled, they assume a flattened cylindricalcross section and range in size from roughly 180 poundsto in excess of 70 tons (80-64,000 kg) per unit. Availablein custom sizes and shapes, the dimensions of the formcontrol the concrete armor unit’s length, width, height,and weight.
Armor Units have the mass and stability for theconstruction of gravity seawalls and revetments, groins,levees, dikes, dams, check dams, and other civil andmarine structures subject to attack by waves orrapidly flowing water. Since they are filled in place,they adapt to variations in the subgrade and are idealfor preventing or repairing scour at bridge piers andabutments, culvert outfalls, or underwater pipelines.Hydrocast installations do not require dewatering, a crucial advantage in emergency repair situations.
EL
EB
Hydrotex™
Fabric-formed Concrete Erosion Control and Armoring Systems
Hydrotex systems outperform rip rap,gabions, precast concrete blocks, and concrete slope paving, yet are less expensive and far easier to install.
Hydrotex Fabric Forms are filled in place with fineaggregate concrete, delivering the durability andperformance of concrete without the costly anddifficult installation process of a conventionally-formed concrete slope paving.
Hydrotex systems are not only less expensive than rip rap, gabions, precast concrete blocks, orconventionally-formed concrete slope paving, theyalso deliver significant stability and performanceadvantages once installed.
Hydrotex systems can: • adapt to variable subgrades, • relieve uplift pressures, • reduce wave run up, and • manage channel velocities.
The result is a more cost-effective erosion controlsystem with greater hydraulic efficiency, higherpermissible velocities, and improved stability,durability, and performance.
A Wide Range of SolutionsConstructed of high strength, specially woven fabric,Hydrotex™ Fabric Forms come in a variety of form styles.Each style has been engineered to match a certain set ofproject parameters, allowing you to specify different formsto accommodate differing site conditions. HydrotexLinings and Mats are used to create erosion and scourprevention systems ranging from ditch linings to coastalrevetments. Hydrocast™ Armor Units are monolithicconcrete structures that are used for the construction ofseawalls and other civil and marine applications.
Proven in the Lab and in the FieldHydrotex products have been extensively evaluated in anadvanced hydraulics laboratory at a leading researchfacility. Flume testing of Hydrotex Linings and Mats hasderived precise design values to assist you in selecting theappropriate fabric form style and mass per unit area toresist the expected hydraulic loading. Hydrotex productshave proven their value, quality, and integrity in literallythousands of projects worldwide.
Backed with Technical ExpertiseSynthetex’s team of technical, manufacturing, and fieldpersonnel work closely with engineers, owners, andcontractors to derive the best design solutions. Our designphilosophy demands solutions that meet strictperformance, aesthetic, cost, and construction criteria.You are assured of quality materials, superior technicalsupport, competitive prices, and a commitment toexcellence. Our team is able to provide technical anddesign assistance, system specifications, cost estimates,and construction drawings.
Applications:Drainage Ditches Channels and CanalsStreams, Rivers, and BayousLakes and ReservoirsCoastal and Intracoastal ShorelinesJetties and GroinsDikes and LeveesDune ProtectionBeach RenourishmentSeawall and Bulkhead Scour ProtectionBoat Launching RampsWildlife CrossingsLow-water Stream CrossingsEmbankmentsUnderwater Pipeline CoversBridge Abutments and PiersCheck DamsDams and SpillwaysPonds and Holding BasinsLandfill CapsDown ChutesWater Control Structures
Filter Point
Filter Band™
Uniform Section
Enviromat™
Articulating Block
Hydrocast™ Armor Units
Fabric-formed Concrete Erosion Control and Armoring Systems
Product Guide
The information contained herein is furnished without charge or obligation, and the recipient assumes all responsibility for its use. Because conditions or use and handling mayvary and are beyond our control, we make no representation about, and are not responsible for, the accuracy or reliability of said information or the performance of any product.Any specifications, properties or applications listed are provided as information only and in no way modify, enlarge or create any warranty. Nothing contained herein is to beconstrued as permission or as a recommendation to infringe any patent.
© 2016 Synthetex LLC • Synthetex, Hydrotex, Hydrocast, Environ, and Filter Band are trademarks of Synthetex LLC • Printed in USA.
5550 Triangle Parkway • Suite 220 • Peachtree Corners • Georgia • 30092Tel: 1.800.253.0561 or 770.399.5051 Fax: 770.394.5999http://www.synthetex.com E-mail: [email protected]
Note: Values shown are typical and will varywith weight of concrete and field conditions.Custom products of different thicknesses anddimensions can be manufactured.
Hydrotex Linings, Mats, and Armor Unitsare filled in place by pumping fineaggregate concrete into fabric forms. Theresults are reduced material andequipment costs, faster installation, anddependable erosion and scour prevention.
Whether you’re lining a channel;protecting landfill containment systems,underwater pipelines or dams; repairingbridge scour; or armoring a shorelineagainst storm damage, Synthetex LLC hasthe form that meets your needs.
For complete specifications and our Construction and QualityControl Manual, please visit our web site at: www.synthetex.com
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