| 摘要 |
<p>Building elements are obtained by mixing a finely-divided inorganic material with an alkaline earth metal oxide or hydroxide, a water soluble cellulose ether and sufficient water to render mouldable and heating, in a mould, with carbon dioxide. Optional ingredients are an amine, sulphite lye or molasses; plaster or cement, and the moulded product may be further hardened with steam.</p> |
