METHOD FOR PRODUCTION OF EXPANSIVE CEMENT

摘要

ABSTRACT OF THE DISCLOSURE:A method for the production of cement ordinaryPortland cement and an expansive admixture, wherein Portlandcement and an expansive admixture containing, in weight percentbased on the total weight of the cement composition, 2 to 8%bialuminium pentahydroxychloride, 4 to 15% gypsum and, optionally,up to 7% lime are dry mixed and homogenized. According to thissimple method, the expansion comes to an end at the early stageof hardening, thus resulting in volume stability and high strength.