| 摘要 |
<p>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.</p> |
