桥梁混凝土耐久性若干问题的探讨  

Study on the durability of concrete structures bridge

作　　者：赵迁乔[1] 宋夫才 

机构地区：[1]山东科技大学资源与环境工程学院,山东青岛266510 [2]青岛市公路规划设计院,山东青岛266061

出　　处：《混凝土》2011年第5期18-20,23,共4页Concrete

基　　金：青岛市交通运输委资助项目(QDJK2007001)

摘　　要：结合北方冰冻地区近海环境特点,探讨了影响桥梁结构混凝土耐久性的几个问题。从在混凝土中掺入大掺量普通矿粉,到冻融、海水侵蚀复合作用下混凝土结构耐久性评定方法和工程措施,并提出耐久性混凝土配合比的现场调整方法。研究结果表明:首次采用的大掺量普通矿粉的耐久性混凝土配合比技术,能够有效提高混凝土的抗氯离子渗透性;冻融、海水侵蚀复合作用下混凝土结构耐久性评定方法和工程措施进行研究,可对类似海域海水冻融和侵蚀双重作用下桥梁工程建设起到借鉴作用;耐久性混凝土的原料配合比与耐久性能的相关性,可简化耐久性混凝土施工中的耐久性质量监控程序,有效地指导耐久性混凝土的施工。The environmental characteristics of coastal areas north of ice,the impact of the durability of concrete bridge structures of several problems.From the high volume of concrete mixed with ordinary powder,to the freezing and thawing,water erosion durability of concrete structures under combined evaluation method and engineering measures,and proposed site durability of concrete mix adjustment methods.The results show that：the first big content with the durability of ordinary concrete mix slag technology to improve resistance to chloride ion penetration of concrete;freezing and thawing,water erosion durability of concrete structures under combined evaluation method and study engineering measures,similar to sea water can double freezing and thawing and erosion play bridge construction under reference;durability of concrete materials and durability compared with the correlation,to simplify the durability of concrete construction durability of quality control procedures,and effective guidance to the durability of concrete construction.

关 键 词：桥梁结构 耐久性混凝土 耐久性 评定方法 工程措施 相关性 

分 类 号：TU528.01[建筑科学—建筑技术科学]