505 Blue Ball Rd. #160
Elkton, MD 21921
An AQUAFIN Brand Product
Pavemend KEMROK VR™
CHEMICAL RESISTANT REPAIR MORTAR
CSI Div. 03
03 31 23 High Performance Structural Concrete
Physical and Technical Data
Compressive Strengths, psi (MPa)
ASTM C 39
> 3,000 psi (20.6 MPa) @ 24 hrs
> 4,000 psi (27.58 MPa) @ 7 d
> 5,000 psi (34.47 MPa) @ 28 d
Flexural Strength, psi (MPa)
ASTM C 78
> 500 psi (3.44 MPa) @ 24 hrs
MR Credit 5.1, Regional Materials..........................Up to 2 Points
IEQ Credit 4.2, Low-Emitting Materials Paints and Coatings...1 Point
Using this AQUAFIN product can help contribute to LEED certification of projects in the
categories shown above.
KEMROK VR is a rapid setting pozzolan cement mortar. It is a single
component powder that is water activated. KEMROK VR has 20 - 30
minutes working time.
KEMROK VR can be applied in an ambient temperature range of 40° 120°F (4.4°C - 48.9°C). KEMROK VR can be trowel applied in multiple
lifts of 1/4” - 1/2” (6.35 mm - 12.7 mm) or spray applied (contact Field
Engineering for equipment recommendations) in lifts from 1/4” to 3”
(6.35 mm - 76.2 mm). KEMROK VR’s crystalline structure and unique
chemistry provides exceptional resistance to environments with exposure to
Chlorides, Sulfates, Sulfuric acids and more.
RECOMMENDED USES: KEMROK VR has been specifically
engineered for use in vertical industrial applications such as spall repair
and impact damage on beams, columns, pile and pile caps, pressure
bearing pre-cast pipe, curbs, steps, pre-stressed panels, tunnels, sewers,
loading docks, silos,retaining walls, culverts, catch basins, parapet
walls, septic tanks, chemical containments and pre-cast product repair
applications where the potential for sulfuric acid exposure is likely.
KEMROK VR has been designed to protect both new and existing
manholes, wet wells, lift stations and other waste water related structures.
KEMROK VR can be hand applied with trowel or used with spray gun
Results provided by licensed engineering test laboratory and represent
typical results from production materials. Actual results may vary from third
party testing results; however, Aquafin’s materials meet and/or exceed
ASTM C928, and exceed established internal quality control standards,
(available upon request). All samples were air cured.
• Substrates must be of load bearing capacity, and free from all potential
bond breakers such as dirt, dust, grease, oil, sealers, curing compounds,
laitance, loose or deteriorated concrete and any bond-inhibiting foreign
• Mechanically prepare surfaces to achieve a surface profile equal to CSP
5 – 7. Concrete Surface Profile as per ICRI Guideline No. 310.2-1997
(Formerly Guideline No. 03732)
• All surfaces to be repaired should be saturated surface dry (SSD) but have
Splitting Tensile Strength, psi (MPa)
> 400 psi (2.75 MPa) @ 24 hrs
ASTM C 496
Bond Strength, psi (Mpa)
ASTM C 882
> 1,100 psi (7.58 MPa) @ 24 hrs
Results provided by licensed engineering test laboratory and represent typical
results from production materials. Actual results may vary from third party testing
results; however, Pavemend materials meet and/or exceed ASTM C928, and
exceed established internal quality control standards, (available upon request).
All samples were air cured.
Additional Physical Properties
Set Times at 72ºF/22ºC
Initial set: 20 - 30 minutes
Final set: 45 minutes
approximately 136 lb/ft3 (2,178 kg/m3)
Yield per 49.5 lb Unit
0.41 ft3 (0.015 m3)
no standing water. Hot surfaces should be cooled and shaded while cold
surfaces should be heated and sheltered. Mechanically remove all loose
materials by suitable means such as chipping hammer, chisel, sandblast,
high pressure water blast (>5000 psi), or similar methods.
Standard Mixing Procedures (Heavy Duty Drill & Paddle)
1. Place KEMROK VR in a suitable, smooth bottom plastic mixing
2. Dry mix material for 30 seconds.
3. Add in 2 qts (1.89 L) of water per 49.5 lb. (22.45 kg) bag of
4. Mix for 3 1/2 minutes.
5. Place material.
Standard Mixing Procedures (Mechanical Mixers)
1. Pre-wet cement mixer with water then drain all water from mixer (away
from repair area).
2. Start mixer - KEMROK VR requires a total of 2 qts (1.89 L) of water per
49.5 lb. (22.45 kg) unit. Initially, add 50% of total mix water to concrete
3. Add pre-determined units of KEMROK VR.
4. Add in remaining mix water.
5. Mix for 5 minutes total.
Check our website for the latest version of the Technical Datasheet.
www.aquafin.net • www.pavemend.com
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Pavemend KEMROK™ VR
6. Pour all contents into hod ( for hand trowelling ) or spray apparatus
7. Clean mixer or repeat process for next batch.
Application & Finish:
Suggested Spray Gun and Hand Trowelled Application Procedures.
• Cementitious substrates must be dampened with clean potable water prior
to and during installation. Make sure there is no standing water.
• Mix KEMROK VR in accordance with the manufacturers
• For Trowel Applications, install a thin tight coat then immediately double
back to achieve a thickness of 0.5” to 1.0” (12.7 mm - 25.4 mm).
• For Spray Gun Applications, using low pressure spray equipment, apply
on vertical or horizontal surfaces up to 1.0” (12.7 mm) thick. (Contact
AQUAFIN Field Engineering for information on suitable pumps, nozzles
• For thicker builds, allow initial lift to reach final set, then scarify in a
horizontal direction before placing next lift. (Repeat as necessary to reach
final profile thickness.
• KEMROK VR may be floated using a sponge, rubber, magnesium or
wood float designed for this purpose. Avoid placing water on the surface
of the KEMROK VR during the floating process as this could lead to
surface cracking. Dampen the float with water and not the surface of the
KEMROK VR. Finish texture and color can vary depending on the type of
float and method used.
• Avoid installations in the direct sun as this can decrease working time and
cause rapid drying and/or cracking. Plan the work so that a wet edge
can be maintained during installation.
• Follow Industry recommendations regarding the use of Joints and Sealants.
• Working times are influenced by ambient & surface temperatures. For
optimum performance, maintain mortar, host concrete to within a range
of 40ºF (4.4ºC) and 90ºF (32ºC) prior to, during and for 48 hours after
placement of mortar. Working times are influenced by surface temperature
and repair profile. Working time can be extended by adding Set Retarder
Admixture to mix water. (See Set Retardant TDS for more information).
• At low temperatures below 50ºF (10ºC) mortar setting time is extended.
• At high temperatures above 86ºF (30ºC) mortar setting time is
reduced, affecting placement. Aquafin recommends that repairs at high
temperatures be protected from direct sun and heat or be placed early in
the morning. Keep materials cool and use cold water for mixing.
• Clean all tools and equipment with water prior to the material reaching
o not exceed 1.0” (25.4 mm) thickness per lift.
ot recommended for placement in temps below 40ºF (4.4ºC) and
above 120ºF (49ºC).
• Will not bond to polymers or resin coatings.
• Do not exceed maximum mix water requirement.
Packaging & Shelf Life:
49.5 lb. (22.45 kg) Bag
GSA P/N: C1250
• SHELF LIFE:
Bags must be kept dry
Installer is responsible for proper product application. Site visits by Aquafin
personnel or representatives are solely for the purpose of making technical
recommendations, not for providing supervision or quality control.
Refer to Safety Data Sheet (SDS). The use of a dust mask, safety goggles
and gloves is recommended. This document does not purport to address all
of the safety concerns, if any, associated with its use. It is the responsibility of
the user of this document to establish appropriate safety and health practices
and to determine the applicability of regulatory limitations prior to use.
Dispose of water and materials in accordance with Federal, State and Local
regulations. Keep out of the reach of children.
LIMITED WARRANTY: AQUAFIN, INC. warrants this product for a period of one year
from the date of installation to be manufactured free of defects and to be consistent
with its technical properties as stated in our current Technical Data Sheet. This product
must be used as directed and within its stated shelf life. AQUAFIN INC. will replace
or at our discretion refund the purchase price of any product, excluding cost of labor,
which is proven to be defective. Our product recommendations are based on industry
standards and testing procedures. It is the buyer’s obligation to test the suitability of
the product for an intended use prior to using it. We assume no warranties written,
expressed or implied as to any specific methods of application or use of the product.
AQUAFIN INC. MAKES NO WARRANTY AS TO MERCHANTABILITY OR
FITNESS FOR A PARTICULAR PURPOSE AND THIS WARRANTY IS IN LIEU OF ALL
OTHER WARRANTIES EXPRESS OR IMPLIED. AQUAFIN, INC. shall not be liable
for damages of any sort including remote or consequential damages, down time, or
delay. Any claim for a defective product must be filed within 30 days of discovery of a
problem, and must be submitted with written proof of purchase.
For Professional Use Only.
Check our website for the latest version of the Technical Datasheet. Only the current version is legally binding - and only for the intended market. In cases of uncertainty contact
our technical department for further information before starting any applications.
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