PC Products 72561 PC-Concrete Two-Part Epoxy Adhesive Paste for Anchoring and Crack Repair, 8.6 oz Cartridge, Gray Two-part epoxy adhesive paste to fill and repair cracks in concrete, and to anchor threaded rods, bolts, and dowels into concrete, grout-filled block, and unreinforced masonry High-tack paste resists moisture for application in damp environments and can be used in vertical applications Can be used in indoor and outdoor applications with an application temperature range from 35 to 115 degrees F and a service temperature range from -20 to +115 degrees F Provides work time of 20 minutes and cure time of 4 hours (at 75 degrees F) Meets ASTM C881-99 Formulated for anchoring threaded rods, bolts, rebar dowels and smooth dowels into concrete, grout filled block and unreinforced masonry. PC-Concrete is excellent for filling and repairing cracks in concrete, and out-performs all caulks and hydraulic cements. PC-Concrete will not come loose from any cleaned concrete surface and will hold during expansion and contraction of concrete. PC-Concrete is the best solution for permanent concrete repair.