橡胶混凝土因其优越的材料性能而具有较好的应用前景,而强度的降低成为关键问题。试验以强度C25的普通混凝土为基准,用废旧轮胎橡胶颗粒等体积取代细骨料制成橡胶混凝土,研究不同橡胶颗粒粒径和掺量对混凝土力学性能的影响。研究结果表明:橡胶混凝土立方体抗压强度、轴心抗压强度、劈裂抗拉强度和抗折强度均较基准混凝土的小,且随着橡胶掺量的增加而逐渐减小。拉压比较基准混凝土的大,且随着橡胶掺量的增加有增大的趋势。另外试验结果也显示,橡胶的掺入增强了混凝土的韧性,可为橡胶混凝土的实际应用提供技术支持。
Rubber concrete has good application prospect due to its superior material properties.But the reduction of strength is a key problem. With the concrete strength of C25 as a benchmark, the mechanical property of rubber concrete, in which rubber particles replace fine aggregates in equal volume, was investigated. The effect of rubber particle’s size and dosage on concrete’s mechanical properties was researched. Test results reveal that the compressive strength, axial compressive strength, splitting strength and rupture strength of rubber concrete are all lower than those of the benchmark concrete, and they become lower with the increase of rubber content. But the tensile compressive strength ratio is higher than that of the benchmark concrete, and exhibits a trend of increasing with the increase of rubber content. The results also show that the toughness of concrete is increased because of the addition of rubber. This research provides technical support for the practical application of rubber conerete.
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