废砖和废混凝土再生粗集料混凝土作为轻交通水泥路面材料的性能研究  

Study on the properties of recycled waste brick and concrete aggregate concrete for light traffic cement pavement material

作　　者：孙吉书 李鸿运 肖田[2] SUN Jishu;LI Hongyun;XIAO Tian(School of Civil and Transportation Engineering,Hebei University of Technology,Tianjin 300401,China;Tianjin Municipal Engineering Design and Research Institute,Tianjin 300051,China)

机构地区：[1]河北工业大学土木与交通学院,天津300401 [2]天津市市政工程设计研究院,天津300051

出　　处：《混凝土》2018年第8期140-143,148,共5页Concrete

基　　金：国家自然科学基金项目(50878073);天津市交通运输委员会科技计划项目(2014-0)

摘　　要：为了探讨废砖、废混凝土再生粗集料制备轻交通路面混凝土的应用技术,系统分析了再生粗集料掺入量、再生粗集料中废砖集料含量等对再生混凝土的抗压强度、弯拉强度、干缩性能、耐磨性能等技术性能的影响规律,试验结果表明,再生混凝土的抗压强度、抗折强度会随着再生粗集料掺入量增大而降低,在相同再生粗集料掺入量时,再生混凝土的力学性能会随着废砖再生粗集料的掺入量增大而降低,再生混凝土的干缩率、单位面积磨损量随着再生粗集料和再生废砖粗集料掺量的增大而增大。再生集料掺入量为80%以内,且废砖再生粗集料不超过60%时,再生混凝土的技术性能满足轻交通水泥路面混凝土的要求,可以作为轻交通水泥路面的建筑材料。In order to investigate the application technology using waste brick and concrete to product recycled aggregate concrete for light traffic cement concrete pavement,the effect law of recycled aggregate content and recycled waste brick aggregate content on technical properties of recycled aggregate concrete include compressive strength,flexural strength,drying shrinkage and wear resistant ability were systematically analyzed.The test results indicate that the compressive strength and flexural strength of recycled aggregate concrete would decrease with the recycled aggregate content increased.The mechanical properties of recycled aggregate concrete would decrease with the brick aggregate content increased on the same recycled aggregate content.The dry shrinkage rate and abrasion loss of recycled aggregate concrete would increase with the recycled aggregate content increased or recycled brick aggregate content increased.When the recycled aggregate content is less than 80%,and the recycled waste brick aggregate is not more than 60%,the technical properties of recycled aggregate concrete conform to the requirements of light traffic cement concrete pavement.So it can be used as the construction material of light traffic cement concrete pavement.

关 键 词：再生混凝土 抗压强度 弯拉强度 干缩率 耐磨性能 水泥路面 

分 类 号：TU528.01[建筑科学—建筑技术科学]