| 摘要 |
<p>A lightweight cementitious composition comprising a cellulose particulate material, a cementitious material, a cellulose ether, and optionally a cement setting agent; methods for the manufacture of the cementitious composition and a construction element produced from the cementitious composition are disclosed. A lightweight construction element which simulates the appearance of granite and is prepared from a settable mixture of polymer casting resin, raw vermiculite, expanded vermiculite and resin hardener is also disclosed.</p> |
