| 摘要 |
PURPOSE:To enable production of a high-strength molded article in good dimensional accuracy, efficiently and inexpensively, by limiting the blending ratio of quick hardening cement blend consisting of Portland cement, alumina cement, slaked lime, gypsum, reinforcing fibers and a retarder. CONSTITUTION:A quick hardening cement blend has the following composition. Namely, the blend consists of Portland cement, alumina cement, slaked lime, gypsum, reinforcing fibers and a retarder. The amount of the Portland cement is 79-88wt.% based on sum of Portland cement, alumina cement and slaked lime, the amount of the slaked lime is 10-30wt.% based on alumina cement and the amount of the gypsum is 40-100wt.% based on the alumina cement.
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