Standard specification for bonding hardened concrete, steel, wood, brick and other materials to hardened concrete with a multi-component epoxy adhesive (ACI 503.1-92) ; Standard specification for bonding plastic concrete to hardened concrete with a multi-component epoxy adhesive (ACI 503.2-92) ; Standard specification for producing a skid-resistant surface on concrete by the use of a multi-component epoxy system (ACI 503.3-92) ; Standard specification for repairing concrete with epoxy mortars (ACI 503.4-92) /