Concrete Protection Coatings Concrete Protection Coatings 1. Fundamentals 2. Polyurethane Technology 3. APT Components 4. System Application
Concrete Protection CoatingsConcrete Protection Coatings
1. Fundamentals2. Polyurethane Technology3. APT Components4. System Application
Protection of InvestmentProtection of Investment
Reasons: WaterproofingReasons: Waterproofingand Concrete Protectionand Concrete Protection• Hairline crack bridging
• Prevent entry of water, de-icing salt
and chemicals attacking structure
• Preventing/minimizing rebar corrosion
• Improving safety and aesthetics
Steel Rebar CorrosionSteel Rebar CorrosionCrack develops in concrete. Water migrates to steel
rebar initiating corrosion
Crack continues to deteriorate and
corrosion of steel rebar increases
Increased loss of structural steel and expansive force of
corrosion spalls concrete
Concrete Protection CoatingsConcrete Protection Coatings
1. Fundamentals
2. Polyurethane Technology3. APT Components4. System Application
Polyurethane CoatingsPolyurethane Coatings
• 1-component moisture cure
• 2-component solvent-borne
• 2-component water-borne
• 2-component Polyurea
• 2-component solvent free
11--Component Moisture CureComponent Moisture Cure
• Technology: NCO + H2O• Solvent borne• 80% solids contents• Cure temperature ambient• Coat thickness 0.075 mm
22--Component Solvent BorneComponent Solvent Borne
• Technology: NCO + OH andsolvent evaporation
• Solvent borne• 80% solids contents• Cure temperature ambient• Coat thickness 0.1 mm
22--Component Water BorneComponent Water Borne
• Technology: NCO + OH andwater evaporation
• 80% solids contents• Cure temperature ambient• Coat thickness 0.1 mm
22--Component Component PolyureaPolyurea
• Technology: NCO + NH2
• 100% solids contents• Cure temperature
ambient• Coat thickness 0.5 mm
22--Component 100% solidComponent 100% solid
• Technology: NCO + OH• 100% solids contents• Cure temperature ambient• Coat thickness: no limitation
Polyurethane CoatingsPolyurethane Coatings
• 1-component moisture cure• 2-component solvent-borne
• 2-component water-borne
• 2-component Polyurea
• 2-component solvent free
1K PUR Limitations1K PUR Limitations
+ no second component required
– curing profile greatly dependent onclimate conditions
moisture leveltemperature
– no thick film applications
1K PUR Limitations (2)1K PUR Limitations (2)NR C O
Heat/Cat.C ONR
H
OH
OHH
NR H
H
+ CO2
NR C OHeat/Cat.
NH
RH
C ONR
H
HNR
CO N R
H
NH R
Heat/Cat.
N RCO
CO N R
H
N R NH
O
R
H2O CO2
1K PUR
• high humidity climate danger of blistering
• low humidity climate danger of incomplete cure
1K PUR Limitations (3)1K PUR Limitations (3)• no thick film applications (≤ 25-30 mil)
for higher system build-up: multi-layer applications required
• solvents generally required in formulation• incorrect aggregate selection can
influence / alter curing profile up to failure• substrate preparation important:
No application on wet or damp surfaces
2K PUR Technology2K PUR Technology
2 component (2K) reactiveIsocyanate-Alcohol Reaction
NR C O
OHR1
Heat/Cat. C ONR
H
OR1
2K PUR Technology (2)2K PUR Technology (2)• Designed chemical cure
curing profile independent of moisturelevels in environment
• Temperature dependentcuring profile can be tailored by catalystdesign based on temperature requirements(i.e. summer vs. winter grade)
2K PUR Technology (3)2K PUR Technology (3)
• Coat thickness: no limitationthin & thick-film applications(10-80mil and higher in one layer)
• Solvent-free technology100% solid formulations available
• Wet mils = dry mils
2K PUR Limitations2K PUR Limitations
• Substrate temperatureabove 40°F and below 120 °F
• Substrate moisture content < 4%• ASTM D4263 Moisture Test• Surface temperature 6 °F above dew
point temperature• Minimum age of concrete 28 days
Dew Point TemperatureDew Point Temperature
90% 85% 80% 75% 70% 65% 60% 55% 50% 45% 40% 35% 30%20°
40°
60°
80°
100°120°
-20
0
20
40
60
80
100
120
Dew point(°F)
Relative Humidity
Ambient air temperature
(°F)
Concrete Protection CoatingsConcrete Protection Coatings
1. Fundamentals2. Polyurethane Technology
3. APT Components4. System Application
Primer ComponentPrimer Component
fig. Bond Adhesion Test(Elcometer test)
--------- 1522K-PUR,100 % solidsTensile strength 4500 psiElongation 25 %Zero VOC, odor-free50 minute pot life2 hours tack free time24 hrs cure time
Membrane ComponentMembrane Component
fig. Elongation / Tensile Strength Test (Tensiometeraccording to ASTM D-412)
--------- 2522K-PUR,100 % solidsTensile strength 1400 psiElongation 750 %Zero VOC, odor-free3-4 hours before overcoat24 hrs cure time
WearcoatWearcoat ComponentComponent
fig. Elongation / Tensile Strength Test (Tensiometerafter test run)
--------- 3722K-PUR, 100 % solidsTensile strength 4200 psiElongation 10 %Zero VOC, odor-free50 minute pot life24 hours cure time7 days chemical exposure
Topcoat ComponentTopcoat Component--------- 4611K-PUR, solvent-basedTensile strength 2500 psiElongation 200%Low viscosity24 hrs cure time7 days chemical exposure
Topcoat ComponentTopcoat Component--------- 5022K-PUR, >98% solidTensile strength 4000 psiElongation 300%Low viscosity24 hrs cure time7 days chemical exposure
Concrete Protection CoatingsConcrete Protection Coatings
1. Fundamentals2. Polyurethane Technology3. APT Components
4. System Application
Light Duty SystemLight Duty System
1525Primer25220Membrane46110Top
ProductMils
• 5 mil aggregate in topcoat
• Qualipur 372 for indoor
Medium Duty SystemMedium Duty System
1525Primer25225Membrane46110Top
ProductMils
• 10 mil aggregate in topcoat
• Qualipur 372 for indoor
Heavy Duty SystemHeavy Duty System
37215Wearcoat
1525Primer25225Membrane
46110TopcoatProductMils
• 15 mil aggregate in topcoat
• Qualipur 372 for indoor
Crack Repair DetailCrack Repair Detail
461372252152
252HV
Membrane ElasticityMembrane Elasticity
CreateMesh F 30,( )
Flexional Elasticity- linear crack at bottomof cube (x,y-plane)
- 1/2 cycle movement(stretching)
- Vector computed atopen crack
- no oscillation y
x
z
Requirements for correct Requirements for correct Membrane InstallationMembrane Installation
• Qualipur 252 without aggregate
• Membrane layer ≥ 20 mil
• Preferrably applied over PUR-primer
• Epoxy-primers require full cure
Aggregate RetentionAggregate Retention
• Sand retention• Abrasion resistance
10700Resin + Aggregate
104200---------- 372
Elongationε
TensileδProduct
Area ElasticityArea Elasticity• Resin-Aggregate Matrix• Combination of soft membrane (252)
and hard wearcoat (372)
Point Elasticity Area Elasticity
System PropertiesSystem Properties
Modulus calculationεδ
=M
420104200372
27501400252
180254500152
Modulus M
Elongationε
Tensileδ
Product
System CertificationsSystem Certifications• ASTM C957- Component Testing
Tensile, Elongation before/after water, solvent, glycol exposure
• Walker PEM2000 – System TestingHeat ResistanceConcrete AdhesionIntercoat AdhesionWear Resistance
Additional InformationAdditional Information
Advanced Polymer Technology109 Conica Lane – PO Box 160
Harmony, PA 16037 (USA)Tel. +1(724) 452-1330Fax +1(724) 452-1703
www.advpolytech.com