Dur-A-Patch RS-45
Thixotropic, High-Strength, Rapid-Curing Epoxy Repair, Crack & Joint Mortar
09 62 00

Dur-A-Patch RS-45 is 100% solids, two-component, fast curing thixotropic flexible epoxy gel. It is a NON-SAG gel (thixotropic paste) with excellent adhesion, high strength, with excellent physical properties and easy to use as a versatile general-purpose epoxy mortar. Dur A Patch RS-45 is a stiff but easily workable compound that can be applied by trowel, spatula or knife. It cures to give high mechanical properties typical of epoxy compounds. It is resistant to oils, greases, petroleum, salts, many acids and alkalis and most commonly met corrosive media. It does not shrink on curing. Its impact resistance and mechanical strength is greater than that of concrete.

  • Easy to apply
  • Shrink free
  • Chemical resistant
  • High Early strength
  • High tensile and flexural strength
  • Insensitive to moisture during application, cure or whilst in service
  • Excellent adhesion to most building materials even when damp
  • High abrasion resistance
  • High tensile and flexural strength Supplied in factory proportioned units
  • Easily applied
  • Rapid Curing.  Can sand/abrade within 90 minutes
  • Flexible

Dur-A-Patch RS-45 is used to repair concrete substrates, fill cracks and joints in concrete. The product has a degree of flexibility, allowing it to resist breaking and cracking.    

Physical Properties

Grey (Mixed)

Resin Type


Mix Ratio
  • Part A (resin): Part B (Reactor)
  • 1:1 by volume
Cure Time @ 35-40°C
  • To touch & Recoat: 60-90 minutes
  • Full Cure:  7 days
Pot Life @ 23°CF)

10 minutes



Performance Properties
Method Results
Percent Solids

ASTM D7232-06



ASTM D3960

0 g/L

Adhesion to Concrete

Concrete failure

Flexural Strength


23.2 MPa (3,373 psi)

Adhesion to Steel

1/8” Mandrel @ -26°C

20 MPa (2,908 psi) app

Water Absorption


< 0.5%