| 摘要 |
<p>PURPOSE:To efficiently utilize shells which are industrial waste by crushing dried shells with a crusher, mixing specified amts. of the crushed shell, cement and a binder to obtain a hydraulic shell material, measuring and packing the material. CONSTITUTION:Shells are crushed with a crusher, and the crushed shell is screened into a granular material and powder to obtain a coarse aggregate having >= about 5mm size, a fine aggregate having <= about 5mm size and powder having <=2mm size. The ratio of the powder to both aggregates is controlled to about 2/2 to obtain crushed shell, and the specified amts. of the crushed shell, cement and a binder are measured and packed. Besides, 600-900 pts.wt. of the crushed shell, 100-200 pts.wt. of portland cement and 2.5-100 pts.wt. of the binder (mixture of 30-40% CMC, by weight, 30-35% sodium silicate and 30-35% calcium chloride) are preferably mixed.</p> |
