The paper presents the results of studies on based the universal morphology of recycled coarse aggregates in reality, an idealized model of recycled coarse aggregates was prepared using stones. Axial compressive strength tests were conducted on prism-shaped specimens of Modeled Recycled Coarse Aggregate Concrete (MRCAC), which were prepared with different old cement mortar coverages and aggregate arrangements. Through comparison with experimental data, the reliability of the finite element analysis model was determined. It was found that the arrangement of MRCA had a significant impact on the failure characteristics and elastic modulus of MRCAC. Thus, different arrangement modes affected the stress distribution within the specimens, resulting in significantly different axial compressive strength.

中文翻译：

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再生粗骨料模型排列方式对MRAC轴压性能的影响

本文基于现实中再生粗骨料的普遍形态，提出了研究结果，利用石料制备了再生粗骨料的理想模型。对采用不同旧水泥砂浆覆盖率和骨料排列制备的模拟再生粗骨料混凝土（MRAC）棱柱形试件进行了轴压强度试验。通过与实验数据的比较，确定了有限元分析模型的可靠性。结果发现，MRCA的排列方式对MRAC的失效特性和弹性模量有显着影响。因此，不同的布置方式影响了试件内部的应力分布，导致轴向抗压强度存在显着差异。