Abstract Several finite element models have been analysed to numerically investigate the effects on the compressive strength and on the elastic modulus of a concrete with partial replacement of natural aggregates with different amounts and types of rubber particles from waste tyres. Percentages of substitution from 0% to 83% have been considered with rubber particles size ranging from 3 mm to 30 mm. Analytical relationships have been proposed to analyse the reduction factor of the compressive strength (SRF) and the reduction factor of the elastic modulus (ERF) of this material, known as rubbercrete. Results are confirmed similar to those from experimental campaigns reported in the literature. Results from the reference compressive strength variation are confirmed to depend on the size of the rubber particles, regardless the amount. A sensitivity analysis has been also carried out on the elastic modulus of the rubber and rubbercrete final properties are demonstrated not to clearly depend on it.

中文翻译：

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橡胶混凝土力学行为的数值模拟

摘要 对几个有限元模型进行了分析，以数值研究用不同数量和类型的废轮胎橡胶颗粒部分替代天然骨料对混凝土的抗压强度和弹性模量的影响。已经考虑了 0% 至 83% 的替代百分比，橡胶颗粒尺寸范围为 3 mm 至 30 mm。已经提出了分析关系来分析这种材料（称为橡胶混凝土）的压缩强度 (SRF) 折减系数和弹性模量 (ERF) 折减系数。结果被证实与文献中报道的实验活动相似。参考抗压强度变化的结果被证实取决于橡胶颗粒的大小，而不管数量。