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在缺砂的边远地区施工,迫使石屑代砂。能否用石屑代砂的“石屑混凝土”生产构件,石屑及其混凝土的性质如何,通过试验和工程试点本文提出了下述见解:1、为生产粗骨料破碎石灰岩而共生的废品——石屑,具有比河砂更优裕的性质。2、河砂和石屑混凝土二者力学指标相近;套用现行设计规范数据,石屑混凝土尚偏于安全。而石屑混凝土设计还有收缩率小致密等优点。3、石屑混凝土的施工并不困难,所制成的构件都取得了满意的效果。
In the absence of sand in remote areas construction, forcing stone instead of sand. Through the experiment and engineering pilot, the following opinions are put forward: 1, Waste products that are symbiotic for producing coarse aggregates and crushing limestone - Stone chips, with a better margin than river sand. 2. The mechanical indexes of river sand and stone chip concrete are similar; applying the current design code data, stone chip concrete is still partial to safety. The design of stone and concrete shrinkage rate is also compact and so on. 3, the construction of stone concrete is not difficult, made of the components have achieved satisfactory results.