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再生混凝土(RAC)是一种多相非均质材料,再生骨料的随机性对其弹性性质有着显著地影响。结合蒙特卡洛有限元法,可根据均质化方法从代表体元中计算得到有效弹性模量的概率分布特征。大量的数值试验结果表明,不同取代率的再生混凝土等效弹性模量有着明显的变化规律,且近似服从一定的概率分布。
Recycled concrete (RAC) is a heterogeneous heterogeneous material. The randomness of recycled aggregates has a significant influence on the elastic properties. Combined with the Monte Carlo finite element method, the probability distribution of effective elastic modulus can be calculated from the representative voxels according to the homogenization method. Numerous numerical experiments show that the equivalent elastic modulus of recycled concrete with different substitution rates has a clear rule of change, and approximately obey a certain probability distribution.