High efficiency CSA Expansive Agent is obtained by blending suitable natural anhydrite with a specially manufactured clinker which consists essentially of calcium sulphoaluminate and CaO. When mixed in the proper proportions with ordinary cement and hydrated, cement mortar or concrete expands during the early stages of hydration. This expansion, when restrained, makes it possible to minimize drying shrinkage. Moreover, when the ratio of High efficiency CSA Expansive Agent to ordinary cement is increased its high expansion qualities make it ideal for use in prestressed concrete.

CSA BINDER is not a cement, some of clients called it csa additive, it`s a pure csa clinker, the precursor to csa based cements. This binder is a hydraulic, cementitious mineral blend, high in C4A3S-(Calcium Sulfo aluminate crystals) compound.