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本文研究用聚羧酸高效减水剂与人工砂配制经济型高性能混凝土。运用正交试验分析了人工砂与河砂不同比例、石粉、外加剂及砂率对混凝土工作性、强度、尺寸稳定性的影响。研究表明用聚羧酸高效减水剂与人工砂配制的混凝土具有和易性好、强度比基准混凝土高、收缩小,抗裂性能高,经济等优点。
This paper studies the use of polycarboxylate superplasticizer and artificial sand to prepare economic high performance concrete. The effects of different proportions of artificial sand and river sand, stone powder, admixture and sand rate on the workability, strength and dimensional stability of concrete were analyzed by orthogonal test. The research shows that the concrete prepared with polycarboxylate superplasticizer and artificial sand has the advantages of good workability, high strength, low shrinkage, high crack resistance and economy.