High efficiency CSA expansive agent is a calcium sulphoaluminate expansive agent, which is obtained by firing in rotary kiln. And its main materials are anhydrite calcium sulphoaluminate,calcium oxide,natural gypsum ect. It was prised as international advanced level in 2000 by Hebei province. It also enjoyed the honorary tittles issued by the government,like" high tech product of Hebei province","China emphased promoting new invention patent product" ect. The China Invention Patent Numeber is 02116312.X.It has been applied to the constructions of the capital of Dongzhi Gate transportation junction, Beijing Wanghe bridge, jingchen high-way fifth-ring bridge ,ect.
Advantages of CSA expansive agent in mortar/concrete products:
Low alkali.CSA Expansive Agent has a very low alkali content (R2O