Study on mechanical properties of recycled fine aggregate concrete
In this study,the comparison of key mechanical properties such as compressive and tensile strength of recycled fine aggregate concrete and natural aggregate concrete is systematically analyzed,and the variation law of strength and durability of recycled fine aggregate concrete is revealed.The results show that the 28d compressive strength of recycled fine aggregate concrete is about 15%lower than that of natural aggregate con-crete under the same water-cement ratio,but the difference between the two materials gradually decreases with time.For splitting tensile strength,the tensile strength of recycled fine aggregate concrete in 3d is about 83%of that of natural aggregate concrete,and this value has stabilized at about 85%in subsequent tests.In addi-tion,the static elastic modulus of recycled fine aggregate concrete is 86.7%of that of natural aggregate con-crete at 3d,and the proportion increased slightly with the increase of curing time,reaching about 93%.
recycled fine aggregateconcretemechanical property
万方数据
维普
