摘要：With the rapid development of the construction industry, the construction waste generated by the construction industry has also increased unprece-dentedly, which has a certain impact on the environ-ment and a certain hazard to the society. The tech-nology of using waste concrete asrecycled aggregate after crushing, removing impurities, grading,andus-ing recycled aggregate to prepare recycled concrete can not only solve the environmental pollution caused by waste concrete, but also save natural ag-gregate resources and bring significant social bene-fits, economic benefits, and ecological environmen-tal benefits. This paper experimentally determines the main mechanical properties of recycled aggre-gate lime-ash gravel such as the maximum dry den-sity,optimal water content, unconfined compressive strength, indirect tensile strength and indoor com-pressive resilience modulus, and compare with the parameters of natural aggregate crushed stone, The experimental results show that the mechanical stabil-ity of recycled aggregate lime-ash crushed stone is stronger than the parameter value of natural aggre-gate crushed stone. The main mechanical properties of lime-ash gravel meet the requirements of road en-gineering for bearing base and it is feasible to use recycled aggregate to replace natural aggregate for road lime-ash crushed stone base.
关键词：Recycled concrete;recycled aggregate;roadbed gravel;ecological and environmental protection;mechanical sta-bility
