Procedure for the production of stone grain and stone grain, in particular for building materials

摘要

Process for production of variable grain size stone composition for building materials, e.g. concrete, especially a light admixture composition, involving:(a) preparation of a homogeneous starting mixture from:(weight %):cement (1-10), fired clay (20-85), burnt plant ash (10-40), flue dust (0-35), light admixture (0-1) and water, where the ratio of the weight of water to the total dry weight of starting mixture = 0.20-0.35, (b) preparation of a molded article from the starting mixture, and (c) setting (sic) of the molded article at a temperature of 80 deg.C, where the molded article is hardened to particles of variable grain size stone composition. An independent claim is included for a variable grain size stone composition.