• Epoxy ARC 791 High Build Concrete Repair Chemical Resistant Screed
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Epoxy ARC 791 High Build Concrete Repair Chemical Resistant Screed is applied to a wastewater weir

The High Build Screed is applied to a wastewater weir, protecting a structure which controls water flow

Epoxy ARC 791 High Build Concrete Repair Chemical Resistant Screed resurfacer is applied to walls of water and wastewater treatment facility

It's applied to the walls of this water and wastewater treatment facility

Epoxy ARC 791 High Build Concrete Repair Chemical Resistant Screed repairs hairline cracks and porous flooring in a chemical processing plant

It's chemical resistance and strength capabilities provides the ideal solution to repair hairline cracks and porous flooring in a new chemical processing plant

Epoxy ARC 791 High Build Concrete Repair Chemical Resistant Screed is applied to a wastewater weir
Epoxy ARC 791 High Build Concrete Repair Chemical Resistant Screed resurfacer is applied to walls of water and wastewater treatment facility
Epoxy ARC 791 High Build Concrete Repair Chemical Resistant Screed repairs hairline cracks and porous flooring in a chemical processing plant

Epoxy ARC 791 High Build Concrete Repair Chemical Resistant Screed is a high-build modified epoxy coating.

It can bond to damp concrete and is highly chemically resistant.
This 100% solids, quartz (SiO2) reinforced coating is designed to resurface and restore concrete surfaces, protect new concrete and repair concrete damaged by chemical attack or mechanical stress. ARC 791 is also used as a replacement for acid resistant tiles, epoxy mortars, fiberglass, and conventional overlayments.

Thanks to a coefficient of thermal expansion comparable to concrete, this high build screed effectively resists cracking & delamination, while its adhesion exceeds the cohesive strength of concrete. This epoxy coating features no VOCs and no free isocyanates, enhancing its safety of use.

Epoxy ARC 791 High Build Concrete Repair Chemical Resistant Screed is designed to:

  • Resurface concrete damaged by chemical attack or mechanical stress
  • Resist a wide range of chemicals
  • Replace acid resistant tiles, epoxy mortars, fiberglass, and conventional overlayments
  • Bond to damp concrete, making substrate impermeable for aggressive chemicals
  • Apply to vertical substrates at nominal dft of 6 mm (240 mils) using ARC 797 primer
  • Safely and easily apply by trowel

Epoxy ARC 791 High Build Concrete Repair Chemical Resistant Screed application areas include:

  • Acid and alkali spill areas
  • Pump bases/grouting
  • Trenches and drains
  • Bottling lines
  • Wastewater treatment​
  • Structural support columns
  • Equipment bedding
  • Concrete tanks/sumps
  • Tile repointing
  • Food processing plants
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Mix Ratio See Data Sheet
Working Time ARC 797 Primer is 40 mins at 16°C (60°F)

ARC 791 is 70 mins at 16°C (60°F)

Curing Schedule Foot Traffic is 9 hours at 16°C (60°F)

Light Load is 19 hours at 16°C (60°F)

Full Load is 42 hours at 16°C (60°F)

Full Chemical is 13 days at 16°C (60°F)

Pull Off Adhesion (ASTM D 4541)

>35.1 kg/cm² (>3.4 MPa)

>500 psi Concrete Failure

Bond Strength
Excellent – 100% Concrete
>28 kg/cm² (>2.8 MPa)

>400 psi

Maximum Service Temperature

(Dependent on service)

Water Immersion (continuous) 66°C (150°F)

Water Immersion (intermittent) 93°C (200°F)

Cured Density 1.88 gm/cc

117 lb/ cu.ft.

Packaging and Coverage

Nominal, based on a 6 mm (240 mil) thickness

System Kit covers 4.10 m² (44.13 ft²)
Contains:
– 1 x ARC 797 primer pack
– 1 x ARC 791 resin pack
– 3 bags of QRV reinforcementBulk Kit covers 16.70 m² (180.00 ft²)
Contains:
– 1 x ARC 797 Bulk kit primer pack
– 1 x ARC 791 resin
– 1 x ARC 791 curing agent
– 12 bags of QRV reinforcement
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