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JET GROUT APPLICATION
www.temeltas.com.tr www.facebook.com/temeltasinsaatas
The Jet Grouting process or Soilcrete is known as a soil-cement stabilisation.
JET → A fluid flow which is passing through a small opening with very high-speed. High pressure is needed to produce the kinetic energy required for the jet through a small-diameter nozzle.
GROUT → Cement Mortar
Jet grouting is a construction process that uses a high-pressure jet of fluid (generally 40 – 45 MPa) to break up and loosen the soil at depth in a borehole and to mix it with a self-hardening grout to form columns, panels and other structures in the ground.
The Advantages of Jet Grouting
- Applicable to almost all soil types
- Individualised in situ treatment
- Designable strength and permeability
- Specific layer treatment
- Inert components only
- Vibration-free
The Advantages of Jet Grouting
- Applicable in limited working spaces
- Possibility of different Soilcrete elements
- Maintenance-free
- The safest and most direct underpinning method
- Able to operate around underground installations in service
- Faster than alternative methods
The parameters for the jet-grouting process and the desired final strength of the treated soil depend on a number of characteristics, such as the soil type, the technique used and the objective to be reached.
In granular soils, the high-pressure jet breaks up the grains through erosion, while in a cohesive soil, such as clay, the jet breaks the mass up into small particles. High pressure is needed to produce the kinetic energy required for the jet through a small-diameter nozzle.
The speed of cement mortar reaches up to ~250m/sn. Cement mortar forms a soil structure -soilcrete- by break up and loosen the ground and mix it with a thin slurry.
The choice of the most appropriate system and operating parameters is dictated by:
• The type and geotechnical properties of the soil to be
treated,
• The radius of action of the jet needed to achieve the
required size of the mixed-in-place structure,
• The desired mechanical post-treatment soil properties,
• The site constraints and its environment.
The jet system and parameters are selected on the
basis of:
- The energy of the jet needed to obtain the desired
radius of action with the proposed jet system,
- Grout formulation needed to achieve the required
strength in the grouted soil.
The result (diameter, composition and strength of the columns) is dependent on:
Jet pressure inside the drill rod, Fluid flow rate, Cement mortar composition, Drill rod rotation and raising speeds, Soil type, Grain size distribution, composition and compactness, Jet configuration (single, double or triple jet set-up).
Principal Jet Grout Systems; Jet - 1 Single Jet: In the single jet configuration, the jetting fluid is grout which performs the three functions of loosening the soil, removing the excess, and providing the binder.A significant proportion of the kinetic energy of the jet is lost through friction in the soil suspension and the excess material may become too viscous to rise freely to the hole collar. Jet - 2 Twin Jet: If the very high velocity grout jet is sheathed in a cone of air, the radius of action of the jet in the same soil is substantially increased.In the double jet configuration, the air improves performance in removing in situ soil by acting as an air lift. Jet - 3 Triple Jet : In the triple jet set-up, soil loosening and removal is effected by water and air jets together, independently of the incorporation of the binder, which is delivered by a simultaneous jet of low pressure grout (at a few MPa) emerging from a low nozzle.The high pressure pump and circuit in the triple jet configuration carries only water. There must also be a second, low pressure grout pump, and a three-line drill string.
Jet - 1 Single Jet
Jet - 2 Twin Jet
Jet - 3 Triple Jet
Achieved Jet Grout Columns by Choosing Different Systems;
Jet 1: 10 - 100 cm,
Jet 2: Up to ~ 180cm,
Jet 3: Up to ~ 300cm,
Gün
JET GROUT COLUMN PRODUCTION
Jet Grout Set means a group of machines and equipment used to create a jet grout column. Before commencement of the jet grouting works, a grouting plant consists cement silo, jet grouting pump and mixer group will be prepared to form a jet grouting set. A Jet grout set consist of following items;
Drilling Machine: To drill up to specified depth.Pump Unit: To pump the grout mortar with desired pressure to reach the design diameter.Mixer Unit: Where cement slurry is prepared. Cement and water quantity can be measured electronically according to desired mixing ratio. It consist of mixer and a soothing boiler. It feeds jet grouting pump unit. Cement Silo: A storage unit which can store large quantities of cement in bulk and be able to feed jet grouting mixer sufficiently. Water Tank: 15-25 ton capacity, for the purpose of water storage.
Jet Grout Set
Jet Grout Pump
Drilling Equipment
JET GROUT APPLICATION AREAS
Corosion Prevention
Foundation Support and Shoring
Braced Shoring
Impervious Shaft
Foundation Support & Deep Foundations
Water Plug
Tunnel Construction
Applications: • Underpinning of existing structures
• Downward extension of foundations in the case of settlements or
increased load
• Soil improvement, even underneath existing structures
• Vertical impervious barriers
• Impermeable base for excavations
• Bracing and stiffening of excavations underneath their base
• Connection of sealing walls to existing structures and/or services and utilities
• Walls for cylindrical or polygonal excavations
• Horizontal screens and canopies for tunnelling
• Soil stabilisation between neighbouring excavations or foundationworks
• Impervious connection of individual piles in pile walls
JET GROUT GEOMETRY
TURKEY, Adapazarı, TURK TRACTOR FACTORY
TURKEY, Adapazarı, TURK TRACTOR FACTORY
TURKEY, Adapazarı, TURK TRACTOR FACTORY
TURKEY, Adapazarı, TURK TRACTOR FACTORY
RUSSIA, St. Petersburg, TOYOTA EXTENSION Project / RONESANS CONSTRUCTION
RUSSIA, St. Petersburg, TOYOTA EXTENSION Project / RONESANS CONSTRUCTION
RUSSIA, St. Petersburg, TOYOTA EXTENSION Project / RONESANS CONSTRUCTION
RUSSIA, St. Petersburg, TOYOTA EXTENSION Project / RONESANS CONSTRUCTION
RUSSIA, Moscow, REUTOV AVM Project / RONESANS CONSTRUCTION
ALAÇATI - İZMİR
ALAÇATI - İZMİR
ALAÇATI - İZMİR
ALAÇATI - İZMİR
TUZLA GEMİ ENDÜSTRİ A.Ş.
TUZLA SHIPYARD
SEMI WET OFF-SHORE SLIDEWAY CONSTRUCTION
BORED PILE AND SHORING WITH JET GROUT COLUMN
1 NO'LU ANO 2 NO'LU ANO 3 NO'LU ANO 4 NO'LU ANO 5 NO'LU ANO
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DİSPOZİZYON PLANI 1/200
B-B KESİTİ 1/200 (TİP 3) JET GROUT
3 NO'LU ANO
4 NO'LU ANO 5 NO'LU ANO
-3.395
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ø80 FORE KAZIK - (FK3)
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-1.237-1.234
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1- TÜM BOŞLUKLAR DOLDURULACAK ŞEKİLDE
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64
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A'B'C'D'E'F'
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2- L-M ve N-O SATIRLARINDAKİ JET GROUTKOLON BOYLARI 10m UYGULANACAKTIR.
AB
CD
EF
TUZLA SHIPYARD AREA- İSTANBUL
TUZLA SHIPYARD AREA - İSTANBUL
JET GROUT
(TİP 6)JET GROUT
(TİP 1)JET GROUT
(TİP 4)JET GROUT
(TİP 5)JET GROUT
-9.50
VİN
Ç A
KS
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-3.395
± 0.00
-10.50
-8.00
-10.00
-17.00
ø32 DONATIL=9.00m
A'B'C'D'E'F'
E D C ABI H G Fj
ABCDEF
A-A KESİTİ 1/200
ø63.5 GERGİ ÇUBUĞU
(TİP 3) JET GROUT
± 0.00
-10.50
-4.50
+1.70
(TİP 2)
(TİP 4) JET GROUT
(FK1 ve FK2) ø100 FORE KAZIK
(TİP 2) JET GROUT
TUZLA SHIPYARD AREA - İSTANBUL
TUZLA SHIPYARD AREA - İSTANBUL
TURKEY, Istanbul, TUZLA SHIPYARD
TOPRAK BUSINESS CENTER
BORED PILE - SHORING WITH PRESTRESSED ANCHORS AND JET
GROUT
KASIMPAŞA - İSTANBUL
KASIMPAŞA - İSTANBUL
KASIMPAŞA - İSTANBUL
TUZLA - İSTANBUL
TUZLA - İSTANBUL
KANATLI REAL ESTATE INC.
KANATLI BUSINESS CENTER
SHORING WITH PRESTRESSED ANCHORS AND JET GROUT
KANATLI BUSINESS CENTER - ESKİŞEHİR
KANATLI BUSINESS CENTER - ESKİŞEHİR
KANATLI BUSINESS CENTER - ESKİŞEHİR
- THANK YOU -