坝陵河大桥锚碇混凝土耐久性研究  

Durability Study on Anchor Concrete of Baling River Bridge

作　　者：常晶[1] 亓路宽[1] 刘波[2] 彭运动[2] 

机构地区：[1]北京工业大学建筑工程学院,北京市100022 [2]中交公路规划设计院,北京市100010

出　　处：《公路》2008年第5期173-177,共5页Highway

基　　金：交通部西部交通建设科技项目,项目编号200531800019

摘　　要：通过试验对坝陵河大桥锚碇混凝土的渗透性进行了分析。结果表明,氯离子扩散试验得到的混凝土渗透性结果与孔结构试验结果吻合较好。同时根据试验所得的渗透系数对锚碇混凝土的耐久性寿命进行了预测,并分析总结了提高混凝土耐久性的技术措施,为混凝土结构耐久性设计提供了参考。The permeability for anchor concrete of Baling River Bridge is analyzed by experiments. The results show that the results of concrete permeability obtained from the experiment of diffusion of chlorine ion and experiment of pore structure are in good agreement. According to the permeability coefficient obtained from the experiments, the durable life of anchor concrete is predicted and the technical measures which can improve the durability of concrete are summarized. The reference for the design of concrete structures durability is provided.

关 键 词：氯离子 扩散系数 孔径尺寸 临界浓度 耐久性 

分 类 号：U414.18[交通运输工程—道路与铁道工程]