干湿再生粗骨料对再生混凝土力学性能的影响

Impact of wet recycled coarse aggregate on the mechanical properties of recycled concrete

为研究9.5~16 mm粒径范围内的再生粗骨料干燥和潮湿两种状态对再生混凝土的力学性能影响,以干燥状态再生粗骨料作为对比进行干湿两种状态再生粗骨料替代率为0、20%、40%、60%、80%、100%等质量替代天然粗骨料配制6种C30混凝土,对不同状态下的再生混凝土进行抗压和劈裂拉伸试验。结果表明:潮湿状态下的再生粗骨料对应的再生混凝土抗压和劈裂拉伸强度均低于干燥状态下再生粗骨料对应的再生混凝土抗压和劈裂拉伸强度。

It mainly aimed at studying the effect of dry and wet recycled coarse aggregate on the mechanical properties of recycled concrete between 9.5-16 mm diameter range.It compared the dry state with dry and wet state of recycled coarse aggregate, which compounded 6 kinds of C30 concrete with same quality of natural aggregate under the replacement rate of 0,20%, 40%, 60%, 80%, 100%.Within the process, the compressive strength and splitting tensile strength were tested.Results showed that both of the compressive strength and splitting tensile strength of wet recycled coarse aggregate were lower than those of dry recycled coarse aggregate.