Specification :

Expansive cement early strength Portland cement clinker is mainly accompanied by an appropriate proportion of CSA, gypsum, etc. Mixed with a variety of functional materials, made by fine grinding with the expansion of the performance of the cement matrix. It features a compensatory contraction, the early, post-high strength, and can significantly improve the concrete (or mortar) of the cracking, seepage performance.

The product was first in 1978 and successfully developed by the hospital and through ministerial-level appraisal in 1984 by National Science and Technology Invention Award. After 20 years of development, expansion of cement from the earliest to alunite expansion as the main source of alunite expansive cement to the present with the development of CSA as the main source of the new expansion of cement expansion, higher performance, expansion is more stable.