青海盐湖地区混凝土抗碳化性能试验研究  

Study on carbonation resistance of concrete in Qinghai Salt Lake Area

作　　者：周纲[1] 刘爱东 王毅红[3] 惠亚楠[3] 

机构地区：[1]中交第一公路勘察设计研究院有限公司,陕西西安710075 [2]合肥招标投标中心,安徽合肥230001 [3]长安大学建筑工程学院,陕西西安710061

出　　处：《混凝土》2011年第12期21-23,27,共4页Concrete

基　　金：中交第一公路勘测设计研究院有限公司科技基金项目

摘　　要：为解决盐湖地区公路桥梁基础防盐蚀问题,从混凝土碳化角度研究混凝土在盐湖卤水侵蚀条件下的碳化性能和盐湖卤水侵蚀、冻融循环双重因素影响下的碳化性能。通过试验研究对比分析了未采取其他措施的高性能混凝土和采取防腐措施的高性能混凝土碳化性能的差异,观察防腐措施的效果,建立了盐湖卤水条件下的混凝土碳化模型。研究表明:外抹和内掺防水材料的措施对提高混凝土抗碳化性能有一定效果,所建立的盐湖卤水条件下的混凝土碳化模型与试验结果吻合良好。In order to solve the anti-salt corrosion problem of roads and bridges bases in Salt Lake area.Researched the carbonation perfor- mances of concrete under two conditions from the perspective of concrete carbonation：undergoing the corrosion of salt lake brine;undergoing dual factors of the corrosive salt lake brine and the freezing-thawing cycle.Investigated the anti-corrosion effect and established a model of concrete carbonation under salt lake brine by comparing the performance difference between two high-perfomaance concretes：one is with anti-corrosion measures and another is without any countermeasures.Studies show the carbonation resistance performance of concrete can be improved to some extent by smearing waterproof materials and add those materials into it.Moreover, the established model of concrete carbonation under Salt Lake brine agrees well with the experimental results.

关 键 词：混凝土碳化 冻融循环 混凝土防腐 盐湖 数学模型 试验研究 

分 类 号：TU528.01[建筑科学—建筑技术科学]