橡胶颗粒粒径和掺量对混凝土性能的影响

Research on the Effects of Particle Size and Mixed Quantity of Rubber Pelle on Flesh Concrete's Property

以C25普通混凝土为基准,用废旧轮胎橡胶颗粒等体积取代细骨料制成橡胶混凝土试件,对不同橡胶颗粒粒径和不同掺量对混凝土拌和物性能、力学性能和耐久性能的影响进行了试验研究,并运用双因素方差分析方法对试验数据进行整理,分析了橡胶颗粒粒径和掺量及这两种因素的交互作用对混凝土性能影响的显著性。结果表明:橡胶混凝土的抗压强度、轴压强度、劈拉强度、抗折强度均较基准混凝土的低,抗碳化性能只在有些掺量时比基准混凝土好,掺胶粉混凝土的抗渗性能明显比基准混凝土的好,掺粒径3～6 mm橡胶颗粒的混凝土的抗冻性能有所改善;在橡胶颗粒粒径和掺量对混凝土性能影响中,粒径因素起主导作用。

Using C25 concrete as a base, an experiment of used scrap tire rubber particles isometric replacing by fine aggregate concrete was carried out to make a research on the effects of different particle size and mixed quantity of rubber pelle on flesh concrete mixture property, mechanical property and durable property. Using the double factors variance, the test data and concrete effect of the rubber particle size , dosage and the two factors on the performance of significance were analyzed. The results show that the rubber concrete＇ s compressive strength, axial compressive strength, splitting tensile strength and bending strength are lower than that of reference concrete＇ s. The anti-carbonation resistance is better only in individual dosage than reference concrete. Concrete＇ s anti-permeability is better than the base concrete obviously when blending powder. Blending 3 - 6 mm rubber particles of concrete frost resistance has been improved. In concrete performance influence of the rubber particle size and dosage , particle size factor plays the leading role.