用水泥路面碎石化后回收粒料再生的冷拌沥青混合料的性能  

Properties of Cold Mix Asphalt Mixture with Reclaimed Granular Material after Cement Pavement Rubblization

作　　者：刘祥胜[1] 葛折圣[2] 李茜[2] 

机构地区：[1]安徽高速公路控股集团有限公司,合肥230051 [2]华南理工大学,广州510641

出　　处：《科学技术与工程》2012年第21期5384-5386,5395,共4页Science Technology and Engineering

基　　金：国家自然基金重点项目(51038004);交通运输部西部交通建设科技项目(2009318000078);广东省公路管理局科技项目(粤公研2011-7)资助

摘　　要：采用乳化沥青作为结合料,将回收水泥路面碎石化后破碎的粒料再生成冷拌沥青混合料。首先,通过马歇尔稳定度试验和劈裂强度试验确定再生混合料的最佳乳化沥青用量;然后,分别通过车辙试验和冻融劈裂试验评价了再生混合料的高温稳定性和水稳定性。结果表明,用回收水泥路面碎石化后破碎的粒料再生成的冷拌沥青混合料具有较高的力学强度,优良的高温性能和水稳定性,满足JTG F41—2008《公路沥青路面再生技术规范》要求。The method is adopted in which emulsified asphalt as binder, and crushed granular material after cement pavement rubblization is used to recycle the cold mix asphalt mixture. Firstly, to determine the optimum asphalt content of the recycled asphalt mixture, Marshall stability test and splitting test were done. Secondly, high temperature stability and water stability of the recycled asphalt mixture were evaluated through rutting test and freeze-thaw splitting test. The results show that cold mix asphalt mixture recycled by recycling granular material after cement pavement rubblization has greater mechanical strength, and superior high temperature stability and water stability and meets the requirement of JTG F41--2008 Technical Specifications for Highway Asphalt Pavement Recycling.

关 键 词：路面工程 柔性基层 沥青混合料 冷再生 性能 评价 

分 类 号：U414.75[交通运输工程—道路与铁道工程]