Abstract：
This paper designed the mixing proportion of C30 self-compacting recycled concrete and carried out experimental study on its mechanical property. Based on the test results, the influence of curing age, water-reducing admixture amount and recycled congregate substitution ratio on self-compacting concrete slump and compression strength were analyzed, and it was found that self-compacting concrete reaches the C30 trial strength 28 days after pouring and 43% of the mixing strength 56 days after pouring. The optimal amount of water reducing admixture and optimal replacement ratio of recycled aggregate is 3% and 40% respectively.
