3M™ Scotch-Weld™ Concrete Repair DP600 is a rapid setting, two-part polyurethane adhesive that can be used in the repair of spalled or cracked concrete floors, or pool decks in high traffic areas. This adhesive has a 1:1 ratio liquid in a duo-pak cartridge. 3M™ Scotch-Weld™ Concrete Repair DP600 is a horizontal grade repair material and adhesive for bonding a variety of substrates such as concrete, ceramic, wood, and metal. The adhesive is a fast-curing formula that has a one minute worklife and cures completely in one hour to keep projects and work schedules on track. For best results, use the 3M™ Scotch-Weld™ Plus II Applicator and Mixing Nozzles (sold separately.)