![]() Take care not to impact any residue in the crack during cleaning. Oil, grease or other contaminants must be removed from the surface to allow the paste to adhere properly. Clean the crack and surrounding surface to allow the paste to adhere to solid concrete.Īt a minimum, the surface for gluing must be brushed with a wire brush. For applications at temperatures below 60☏ (15☌) and for fine cracks of less than 0.01 in. 6 Wider cracks that cannot be sealed on all sides require a higher viscosity (paste) injection material, while most cracks that can be sufficiently sealed are injected with epoxies at viscosities of 300 to 600 cps at room temperature. ![]() ![]() Crack injection epoxy resins used for structural crack repairs meet the requirements of ASTM C881,5 Type IV and have appropriate viscosities for the crack widths and degree of resin confinement.
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