Concrete Protection Coating

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