Patent ID: 6893496
Filing Date: 2005-05-17
Classification: C04B,Y10S

Abstract:
1. An admixture for subsequent addition to Portland cement to create a blended cement, said blended cement having from about 15% to about 40% by weight of said admixture blended therein, said admixture comprising: from about 12.5% to about 67% by weight of calcined diatomaceous earth; from about 17.5% to about 67% by weight of calcined kaolin; from about 0% to about 22.5% by weight of talc; from about 0% to about 20% by weight of bentonite; from about 2½% % to 20% by weight of fibrous material and from about 3.4% to 27% by weight of reactive vinyl acetate co-polymer.