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本文分析了天津蓟县机制砂的基本性能,试验研究了机制砂对配制大流动性混凝土及高强混凝土的影响和机制砂对混凝土力学性能和耐久性能的影响,同时研究了机制砂中石粉含量对配制大流动性混凝土工作性和混凝土早期收缩裂缝的影响。
In this paper, the basic performance of machine-made sand in Jixian, Tianjin was analyzed. The effect of machine-made sand on the preparation of high-strength concrete and high-strength concrete and the effect of machine-made sand on the mechanical properties and durability of concrete were studied. Influences of workability of large fluidity concrete and early shrinkage cracks of concrete.