基于细观尺度再生混凝土力学性能研究进展

Research progress on mechanical properties of recycled concrete based on mesoscale

再生混凝土能合理利用建筑垃圾,节约资源。国内外学者从细观尺度对再生混凝土损伤、破坏等力学性能进行了大量研究,论文对其研究方法及进展进行总结。介绍了再生混凝土的细观组成,对不同细观数值研究方法的模拟效果进行了评价分析,总结与试验结果吻合度较高的本构关系模型,为进一步从细观层次对RAC的性能进行分析提供了参考;通过对比试验方法的结果从细观层次揭示了再生混凝土的损伤破坏机理;从材料层次对破坏机理进行分析,并对再生混凝土研究方向进行展望,以期加快再生混凝土的研究推广及应用。

Recycled concrete can rationally use construction waste and save resources.Domestic and foreign scholars have done a lot of research on the mechanical properties of recycled concrete such as damage and failure at a mesoscale.This paper introduces the meso-composition of recycled concrete,evaluates and analyzes the simulation effects of different meso-numerical research methods,summarizes the constitutive relationship model which is in good agreement with the experimental results,and provides a reference for further analysis of RAC performance from the meso-level.The damage mechanism of recycled concrete is revealed from the microscopic level by comparing the results of test methods.The failure mechanism is analyzed from the material level.The research direction of recycled concrete is prospected in order to accelerate the research popularization and application of recycled concrete.