CRC 211 is a two-component, 100% solids epoxy/polysulfide compound used primarily as a binder for sand or coarse aggregate when patching or resurfacing horizontal concrete surfaces. It can also be used for bonding new to old concrete. CRC 211 comforms with Federal Specification MMM-B 00350B, New York State D.O.T. Specification for Item 721-02 (formerly Item M29B), and AASHTO M236-73, Class II