荷载作用下引气混凝土氯离子传输规律研究  

Study of Transmission Law of Chloride Iron in Air Entrained Concrete under Loading

作　　者：张慧[1] 任鹏程 金祖权[1] 常洪雷[1] 刘伟龙[1] 

机构地区：[1]青岛理工大学土木学院,山东青岛266033 [2]青荣城际铁路有限责任公司,山东烟台264000

出　　处：《粉煤灰》2013年第4期40-43,共4页Coal Ash China

基　　金：高性能土木工程材料国家重点实验室开放基金(2010CEM006)

摘　　要：研究了承受0～50%弯曲荷载的引气混凝土在腐蚀溶液浸泡下的氯离子浓度分布、传输规律。试验结果表明:混凝土表层氯离子含量随着荷载等级的增加而逐渐升高,但是升高的幅度逐渐降低;混凝土不同受力区域的氯离子含量关系为受拉区>受压区≈非受力区;硫酸根离子延缓了混凝土中氯离子传输,但这种抑制作用随弯曲荷载应力比增加而减弱。The distribution and transmission of chloride ion in air entrainment concrete with 0~50% bending load and immersed in corrosion solution were investigated. The experimental results showed that the chloride ion content raised with the increasing bending load, but the increasing range gradually reduced. The chloride ion content and its transmission velocity in the tensile stress region were higher than that in the compressive stress region and non-stress region. The sulfate ion in corrosion solution retarded the chloride ion penetration into concrete, and the inhibition weakened with increased bending load.

关 键 词：弯曲荷载 混凝土 氯离子 硫酸盐 

分 类 号：TU528.38[建筑科学—建筑技术科学]