水泥稳定建筑垃圾再生集料基层路用性能研究  

Research on Pavement Performance of Cement Stabilized Construction Waste Recycled Aggregate Base

作　　者：张英治 李娜 崔伟 翟鹏辉 黄亚飞 ZHANG Yingzhi;LI Na;CUI Wei;ZHAI Penghui;HUANG Yafei(Shaanxi Transportation Holding Group Co.,Ltd.,Xi'an 710000,China;Xi'an Highway Research Institute Co.,Ltd.,Xi'an 710065,China;CCCC First Highway Survey,Design and Research Institute Co.,Ltd.,Xi'an 710065,China)

机构地区：[1]陕西交通控股集团有限公司,西安710000 [2]西安公路研究院有限公司,西安710065 [3]中交第一公路勘察设计研究院有限公司,西安710065

出　　处：《路基工程》2024年第4期55-60,共6页Subgrade Engineering

基　　金：国家重点研发计划:低环境影响线性交通基础设施设计建造技术(2021YFB2600103);陕西省交通厅科技项目:水泥稳定建筑垃圾再生材料基层应用技术研究(18-01k)。

摘　　要：为研究水泥稳定建筑垃圾再生集料路面基层适宜的材料配合比,开展建筑垃圾再生集料基本技术性能试验,采用2种成型方式、4种水泥掺量、5种砖骨料掺配比例进行路用性能试验。结果表明:再生集料的压碎值随混凝土骨料含量的提高线性降低;振动压实法试件的无侧限抗压强度为重型击实法的1.5倍以上;再生集料基层的无侧限抗压强度和劈裂强度随水泥掺量的提高线性增长,随砖骨料含量的提高线性下降;水泥掺量和砖骨料含量对无侧限抗压强度影响较大、对劈裂强度影响相对较小,但水泥掺量的影响相对砖骨料更显著;随砖骨料含量的增加,再生集料基层的失水率增加,但其干缩系数降低,抗冻性能降低,骨架密实型结构的抗冻性能优于悬浮密实型结构。In order to explore the suitable material mix ratio of cement stabilized construction waste recycled material base,the basic performance test of construction waste recycled aggregate is carried out.Two forming methods,four cement doses and five brick aggregate mix ratios are used for pavement performance tests.The results demonstrate that the crushing value of recycled aggregate decreases linearly with the increase of brick aggregate content.The unconfined compression strength of the base obtained by the vibratory compaction method is 1.5 times that obtained by the heavy compaction method.The unconfined compression strength and splitting strength of the recycled aggregate base increase linearly with the increase of cement dose,and decrease linearly with the increase of brick aggregate content.The cement dose and brick aggregate content have a more significant influence on unconfined compression strength and a lower impact on the splitting strength;the influence of cement dose is more significant than that of brick aggregate.With the increase of brick aggregate content,the water loss rate of recycled aggregate base increases,but the dry shrinkage coefficient decreases.The frost resistance property of brick decreases with the increase of aggregate content,and the frost resistance property of a skeleton compact structure is better than that of a suspension compact structure.

关 键 词：再生集料 水泥稳定基层 成型方式 失水率 抗冻性 生态环保 经济性 

分 类 号：U416[交通运输工程—道路与铁道工程]