水泥混凝土路面国产环氧沥青防水层的性能分析  

Road Performance of Cement Concrete Pavement Waterproof Layer Made of Domestic Epoxy Asphalt Mixture

作　　者：肖桂元[1,2,3] 严建和[4] 陈学军[2,3] 李培俊[2,3] 

机构地区：[1]同济大学道路与交通工程教育部重点实验室,上海201804 [2]桂林理工大学广西矿冶与环境科学实验中心,广西桂林541004 [3]桂林理工大学广西岩土力学与工程重点实验室,广西桂林541004 [4]中国交通建设股份有限公司第二公路工程局第三工程公司,西安710016

出　　处：《桂林理工大学学报》2013年第3期482-487,共6页Journal of Guilin University of Technology

基　　金：国家自然科学基金项目(51108110;41262011);广西壮族自治区矿山地质环境治理项目(桂国土资源发[2006]4);广西重点实验室创新团队项目(11-cx-01)

摘　　要：为了确定环氧沥青防水层材料在水泥混凝土路面防水应用的适用性及耐久性,结合某特大桥的水泥路面防水层材料施工应用实践,开展了系列试验。结果表明:(1)国产环氧沥青材料、SBS改性沥青材料和FYT材料进行粘附强度对比,其平均抗剪强度依次为1.98、0.39、0.33 MPa;20℃下拉拔强度分别为1.98、0.98、0.83 MPa;50℃下其拉拔强度分别为0.73 MPa、流淌、0.08 MPa。(2)用中和与未中和的国产环氧沥青进行抗拉强度对比,20℃下未中和的环氧沥青与混凝土7、4 d的拉拔强度分别仅为0.53、1.64 MPa;20℃下中和的环氧沥青与混凝土7、4 d的拉拔强度分别达到0.9、2.0 MPa,20℃下中和的环氧沥青与钢板之间的拉拔强度达到7.8 MPa。(3)用国产环氧沥青材料与美国环氧沥青材料进行短期老化试验对比,国产环氧沥青的粘度略有增加,变形性能变化较小,抗拉强度变化较大,而美国环氧沥青老化前后各项指标变化均很小。结果表明,国产环氧沥青防水材料的各项指标与其他防水材料的性能相比具有一定的优越性,能达到国家标准要求,将国产环氧沥青防水材料应用到水泥混凝土桥面防水是可行的。In order to determine the waterproofing terial in cement concrete pavement, several tests suitability and durability of epoxy asphalt waterproof layer ma- are conducted under the application of cement pavement wa- terproof layer material in a large bridge. First, adhesion strength properties of domestic epoxy asphalt materi- als, SBS modified asph 0. 39, 0. 33 MPa, the 0. 08 MPa under 50 ℃. ah materials and FYT material are compared. The average shear strengths are 1.98, pull-off strength under 20 ℃ are 1.98, 0. 98, 0. 83 MPa, and 0. 73 MPa, free, Another test compares the Chinese and American epoxy asphalts. The tensile strengths of 20 ℃ unneutralized epoxy asphalt of 7 d and 4 d are 0. 53 and 1.64 MPa respectively. They are 0. 9 and 2. 0 MPa for the 20 ℃ neutralized epoxy asphalt. The pull-off strength can reach 7.8 MPa at 20 ℃ for neutralized epoxy asphalt. The last test is aging and tensile strength test between the neutralized and the normal domestic epoxy asphalt. It shows that the viscosity of domestic epoxy asphalt slightly increases, deformation performance change a little, but the tensile strength changes a lot. On the contrast, the indicators of American epoxy as- phalt change slightly. Test results show that the indicators of domestic epoxy asphalt waterproof materials have certain advantages compared apply domestic epoxy asphalt with other waterproof materials and can meet national standards. So it is feasible to waterproof materials in cement concrete bridge pavement construction.

关 键 词：水泥混凝土 环氧沥青 防水 桥面铺装 

分 类 号：TU571[建筑科学—建筑技术科学] U414.18[交通运输工程—道路与铁道工程]