| 摘要 |
<p>1492540 Cement composition R E MUNDY 1 April 1975 [31 Dec 1973] 60198/73 Heading ClH A composition capable of setting when mixed with water, comprises cement works precipitator dust, a setting agent and sodium carbonate and/or potassium carbonate. The setting agent may be cement and/or calcium chloride. The composition may also contain borax and also sand, resin sand, or pigment. The composition may be moulded or otherwise shaped or used for rendering purposes.</p> |
