Patent ID: 6648962
Filing Date: 2003-11-18
Classification: C04B,C09D

Abstract:
A process comprising: intermixing a hydratable cementitious binder, at least one admixture in the amount of no less than 10% based on dry weight of cementitious binder and no greater than 95% based on dry weight of cementitious binder, said at least one admixture comprising a water reducer, superplasticizer, set retarder, set accelerator, air entraining admixture, air detraining admixture, shrinkage reducing admixture, corrosion inhibiting admixture, alkali reactivity reducer, permeability reducing admixture, bonding agent, pumping aid, gas former, colorant, grouting agent, dampproofing agent, biocide agent, or mixture thereof, and water to obtain a hydratable cementitious slurry; allowing said slurry to harden into a substantially hydrated mass; and comminuting the hardened mass into a plurality of particulates having an average particle diameter no less than 5 micrometers and having an average particle diameter no greater than 6 centimeters, said plurality of particulates thereby comprising at least one admixture in the amount of no less than 10% based on dry weight of cementitious binder and no greater than 95% based on dry weight of cementitious binder, said at least one admixture comprising a water reducer, superplasticizer, set retarder, set accelerator, air entraining admixture, air detraining admixture, shrinkage reducing admixture, corrosion inhibiting admixture, alkali reactivity reducer, permeability reducing admixture, bonding agent, pumping aid, gas former, colorant, grouting agent, dampproofing agent, biocide agent, or mixture thereof.