季冻区桥梁修补用抗盐冻聚合物修补砂浆力学性能研究  

Research on Mechanical Performance of Repair Mortar of Salt Frost Resistant Polymer for Bridge Repair in Seasonal Frozen Region

作　　者：宋承哲 SONG Cheng-ze(Liaoning Provincial Communication Planning and Design Institute Co.,Ltd.for Highway Maintenance Technology R＆D Center,Shenyang 110166,China;Liaoning Datong Road Construction Co.Ltd.,Shenyang 110111,China)

机构地区：[1]辽宁省交通规划设计院有限责任公司公路养护技术研发中心,沈阳市110166 [2]辽宁大通公路工程有限公司,沈阳市110111

出　　处：《北方交通》2018年第8期6-9,共4页Northern Communications

基　　金：辽宁省交通科技项目(201716)

摘　　要：季冻地区冻融破坏和盐冻破坏是造成混凝土破坏的主要原因,根据桥梁检测结果,需修补的构件有承重构件和非承重构件,修补面包括平面、立面等,对于不同需求应设计不同耐久性指标和力学指标的修补砂浆。研究了胶砂比、水胶比、胶粉掺量对聚合物修补砂浆力学性能的影响,为设计不同力学指标的修补砂浆提供参考。The freeze -thaw damage and salt freezing damage in the seasonal frozen region are main reasons for concrete damage. According to the bridge detection results, components for repair include bearing component and non- bearing component. The repair surfaces include plane, vertical face and so on. According to different demands, the repair mortar with different indexes of durability and mechanics indexes is needed to be designed. The research on the influence of cement - sand ratio, water - binder ratio and mixing amount of rubber powder on the mechanical performance of repair mortar of polymer is made, so as to provide reference for the design of repair mortar with different mechanics indexes.

关 键 词：桥梁 修补砂浆 胶砂比 水胶比 可再分散胶粉 力学性能 

分 类 号：U445.7[建筑科学—桥梁与隧道工程]