以建筑垃圾为骨料的再生混凝土性能研究

Construction Waste Recycled Concrete Aggregate Performance Study

本试验以兰州某工地废弃混凝土为原料来制备再生粗骨料,配制4组不同配合比,且每组分别以粗骨料取代率为0%,30%,70%,100%而制作96个混凝土试块,分别对其进行了坍落度测定和7d,28d龄期的抗压强度试验研究,总结了兰州地区再生骨料混凝土的配合比设计规律和不同再生粗骨料取代率对不同龄期混凝土强度的影响。

In this experiment,waste concrete from a construction site in Lanzhou is used as the raw material to make recycled coarse aggregate,which is turned into 4 groups of different mix proportions afterwards,and then each group is used to make 96 concrete samples at different substitution rates of 0%,30%,70%,100%.Slump test and compression test of 7d and 28d ages are carried out.Finally a conclusion is drawn that summarizes the effect different mix proportions and different substitution rates of the recycled coarse aggregate in Lanzhou on concrete strength of different age