Recycling,crushing,and sieving waste concrete to obtain recycled fine aggregate,and using recycled fine aggregate to replace natural sand to prepare prefabricated recycled fine aggregate concrete interior partition panels,the compressive strength,drying shrinkage,and bending performance were tested.The results show that when the replacement rate of recycled fine aggregate in service concrete is 20％,the compressive strength value of the inner partition wall panel is increased by 10％.The drying shrinkage value when the replacement rate of recycled fine aggregate is 10％～20％is close to the reference group.When the replacement rate of re-cycled fine aggregate is≤40％,the compressive strength and dry shrinkage of the inner wall partition prepared meet the requirements of JG/T 169-2016,and there are no cracks at the hanging point.The bending failure load is more than 1.5 times the weight of the inner wall partition.Replacing natural sand with recycled fine aggregates can reduce the production cost of inner partition panels and also meet low-carbon requirements.
关键词
废弃混凝土/再生细骨料/装配式结构/内隔墙板
Key words
waste concrete/recycled fine aggregates/prefabricated structure/inner partition wall panels
维普
万方数据