典型防水粘结材料抗剪稳定性及抗疲劳性能研究  

Investigation on shear stability and fatigue resistance of typical waterproof bonding materials

作　　者：王笑风 宋国瑞 杨博 万晨光 常迅夫 李豪 WANG Xiaofeng;SONG Guorui;YANG Bo;WAN Chenguang;CHANG Xunfu;LI Hao(Research&Development Center of Transport Industry of Technologies,Materials and Equipment of Highway Construction and Maintenance,Zhengzhou 450000,China;Henan Provincial Communications Planning&Design Institute Co.Ltd.,Zhengzhou 450000,China;Henan Wanlong Expressway Co.Ltd.,Pingdingshan 450052,China)

机构地区：[1]交通运输行业公路建设与养护技术、材料及装备研发中心,河南郑州450000 [2]河南省交通规划设计研究院股份有限公司,河南郑州450000 [3]河南宛龙高速公路有限公司,河南平顶山450052

出　　处：《新型建筑材料》2021年第9期125-128,137,共5页New Building Materials

基　　金：河南省交通运输厅科技计划项目(2019J-2-4)。

摘　　要：研究了混凝土桥面铺装同步碎石封层抗剪稳定性与沥青粘结层种类、沥青洒布量、桥面板构造深度以及外界温度变化的关系,并通过铺装层复合小梁试件四点弯曲疲劳试验,模拟桥面高周疲劳荷载对粘结层抗疲劳特性的影响。试验结果表明:3种同步碎石封层沥青材料最佳洒布量分别为SBS改性沥青1.4 kg/m^(2)、橡胶沥青1.6 kg/m^(2)、环氧沥青1.8 kg/m^(2);混凝土桥面板构造深度以0.4~0.8 mm为宜;外界温度升高导致抗剪稳定性降低;经疲劳荷载作用后,桥面粘结层抗剪强度出现不同程度下降。This paper studied the shear stability of synchronous pavement surface dressing on concrete bridge deck pavement and the relationship with asphalt course type,asphalt spreading amount,structural depth and external temperature.Through the four point bending fatigue test of composite beam specimen of pavement,the influence of high cycle fatigue load of bridge deck on the anti fatigue characteristics of adhesive layer was simulated.Results showed that:the best spreading amount of SBS modified asphalt,rubber asphalt and epoxy asphalt was 1.4 kg/m^(2),1.6 kg/m^(2),1.8 kg/m^(2),respectively.The concrete bridge deck structure depth should be 0.4~0.8 mm.Higher external temperature leaded to lower shear stability.The shear strength of the bridge adhesive layer decreased in varying degrees after fatigue loading.

关 键 词：桥面铺装 同步碎石封层构造深度 抗剪性能 疲劳性能 

分 类 号：TU57[建筑科学—建筑技术科学]