PC-CRETEâ„¢ epoxy is a hand-mixable, fast-setting epoxy putty that quickly repairs concrete and masonry. After mixing, it forms a concrete repair polymer that cures to a concrete-like color and texture. The mixture readily sticks to concrete and masonry surfaces and is easily shaped. It will stick to ceramics, glass, metals and some plastics. It cures within 60 mins. Each stick contains pre-measured portions of activator and base, no measuring or mixing tools are necessary.