NCA is a non-chloride additive (in dry powdered form) designed to accelerate the set time of mortar and concrete mixes while increasing early compressive strength. NCA does not promote steel corrosion or efflorescence and will not disturb color dispersion in colored mortar or concrete. Unlike other non-chloride accelerators, such as those containing calcium nitrate, NCA is not hazardous. No special handling, storage or transportation expense is required.