The present study investigates the mechanical performance of recycled aggregates derived from excavation materials (REM). REM is blended with different quantities of recycled phyllite materials (RPM) and is investigated by Los Angeles (LA) and micro-Deval (MD) tests. X-ray diffraction (XRD) and acid solubility test are performed on the pulverized fractions < 1.6 mm obtained from the LA and MD tests to assess the respective degree of fragmentation and wear of mineral components. The results of the materials in unblended conditions showed considerable difference between MD performance while similar performance was found for LA. Furthermore, about 40% of RPM was sufficient to blend with REM without disturbing the required performance for blended mixtures. Mechanically weak minerals, i.e., phyllosilicates in RPM, significantly influenced the MD performance in blended and unblended varieties, and limestone minerals seem to disintegrate when mixed with amphibolite -which has the potential to dissolve in acidic environments.

本研究调查了从挖掘材料 (REM) 中提取的再生骨料的机械性能。REM 与不同数量的回收千枚石材料 (RPM) 混合，并通过洛杉矶 (LA) 和 micro-Deval (MD) 测试进行研究。对从 LA 和 MD 测试获得的小于 1.6 mm 的粉碎部分进行 X 射线衍射 (XRD) 和酸溶解度测试，以评估矿物成分各自的碎裂程度和磨损程度。材料在未混合条件下的结果显示 MD 性能之间存在相当大的差异，而 LA 的性能相似。此外，大约 40% 的 RPM 足以与 REM 混合，而不会影响混合混合物所需的性能。机械强度较弱的矿物，即 RPM 中的页硅酸盐，