陈家贡特大桥耐久性混凝土应用研究  

Application Study on Durability Concrete in Chenjiagong Bridge

作　　者：赵迁乔[1] 宋夫才 蔡建军 刘承论[1] 

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 [3]山东高速青岛公路有限公司,山东青岛266061

出　　处：《施工技术》2011年第3期86-90,共5页Construction Technology

基　　金：青岛市交通运输委资助项目"近海环境桥梁混凝土耐久性和施工技术研究"(QDJK2007001)

摘　　要：结合北方冰冻地区近海环境特点,研究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,到耐久性混凝土配合比的现场调整方法,提出冻融、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。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;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。Combining with the environmental characteristics in coastal frozen areas, the problems affecting durability concrete application of bridge structures are put forward, including the high volume of ordinary mineral powder, mix proportion adjustment methods on site, as well as evaluation method for concrete durability and engineering measures under comprehensive affection. The results show that the mix proportion technology with large content of mineral powder used for the first time can improve penetration resistance of chloride ion, and the correlation of mix proportion and durability for concrete can simplify the quality control procedures during construction to guide bridge construction for durability concrete.

关 键 词：陈家贡特大桥 桥梁结构 耐久性混凝土 相关性 评定方法 工程措施 

分 类 号：U448.14[建筑科学—桥梁与隧道工程]