摘要
将废弃混凝土回收、破碎、筛分制得再生细骨料,采用再生细骨料替代天然砂制备装配式再生细骨料混凝土内隔墙板,对其抗压强度、干燥收缩、抗弯性能进行测试。结果表明:再生细骨料替代率为20%时,内隔墙板的抗压强度较基准组提高了10%;再生细骨料替代率为10%~20%时的干燥收缩值与基准组接近;再生细骨料替代率≤40%时制备的内墙隔板抗压强度、干燥收缩均符合JG/T 169—2016要求,且吊挂处无裂缝,抗弯破坏荷载为内隔墙板自重的1.5倍以上。采用再生细骨料替代天然砂可以降低内隔墙板的生产成本,也符合低碳的要求。
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 recycled 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.
作者
黄洋茂
黄榜彪
黄秉章
张恒
谢伟标
李广锋
潘丽华
HUANG Yangmao;HUANG Bangbiao;HUANG Bingzhang;ZHANG Heng;XIE Weibiao;LI Guangfeng;PAN Lihua(School of Civil Engineering and Architecture,Guangxi University of Science and Technology,Liuzhou 545001,China;Department of Civil Engineering and Architecture,Liuzhou Institute of Technology,Liuzhou 545006,China;Assembly Building Demonstration Base of Guangxi Zhuang Autonomous Region Assembly Building Research and Demonstration Base of Liuzhou Institute of Technology,Liuzhou 545006,China)
出处
《新型建筑材料》
2024年第5期95-98,共4页
New Building Materials
基金
广西重点研发项目(桂科AB22080083,桂科AB23026065)。
关键词
废弃混凝土
再生细骨料
装配式结构
内隔墙板
waste concrete
recycled fine aggregates
prefabricated structure
inner partition wall panels
