掺橡胶粉对水泥胶砂和混凝土力学性能的影响

Effect of Rubber Powder on Cement Morter and Concrete

采用1 mm粒径的废旧轮胎橡胶粉等量替代砂制作混凝土和胶砂试件,测定其抗压、抗折、抗拉强度和抗裂性能。实验结果表明:在掺入10%以内橡胶粉的情况下,胶砂的抗折和抗压强度均会下降,混凝土的抗拉和抗压强度下降也比较明显,但水泥胶砂和混凝土的抗裂性能会明显提高,掺量为5%时的水泥胶砂和混凝土的力学性能最佳。

1 mm diameter of scrap tire rubber powder was used amount instead of sand concrete and mortar specimen then we determine the compressive strength, bending, tensile strength, crack resistance. The experimental results show that the incorporation of rubber powder 10% within, mortar tlexural and compressive strength will decrease, and there is an obvious decline in the tensile and compressive strength of the concrete, but the crack resistance of Cementmortar and concrete will signif- icantly improve, especially with the admixture for 5% of the Ce- ment mortar and concrete has the best mechanical properties.