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在细观层次上将橡胶混凝土看作由砂浆、粗骨料、橡胶颗粒、砂浆-粗骨料界面、砂浆-橡胶界面及分布在界面中的初始缺陷组成的多相非均质复合材料,建立考虑初始缺陷的橡胶混凝土细观计算模型,模拟橡胶混凝土在轴压荷载作用下的强度和开裂破坏过程,结果显示:损伤区域首先出现在橡胶颗粒周围;初始缺陷的随机分布位置对橡胶混凝土强度影响不大,但其含量对强度有较明显的影响。与物理试验对比发现:该模型能较好地模拟橡胶混凝土的轴压强度和开裂过程。
At the meso-level, concrete is considered as a heterogeneous heterogeneous composite consisting of mortar, coarse aggregate, rubber particles, mortar-coarse aggregate interface, mortar-rubber interface and initial defects distributed in the interface The results show that the damage area first appears around the rubber particles. The random distribution of the initial defects affects the strength of the rubber concrete. The influence of the axial load on the strength of the rubber concrete is analyzed. Not large, but its content has a more significant impact on the intensity. Compared with the physical experiment, it is found that the model can simulate the axial compressive strength and cracking of rubber concrete well.