根据相似理论,以混凝土表面氯离子浓度时变性为纽带,建立现场环境和人工模拟加速侵蚀环境下混凝土构件的时间相似关系.分别对海工混凝土构件和试验构件做取粉试验,通过RCT法检测构件中自由氯离子含量并计算表面氯离子浓度值,分析表面氯离子浓度的时变模型.最终提出时间相似系数表达式并计算得到时间相似系数,为服役中的混凝土结构寿命预测奠定基础.
According to classical similarity theory, based on the time-varying denaturation of surface chloride concentration, the similarity relation in time between actual environment structure and artificial erosion acceleration simulation environment test structure was established.After taking powder in marine concrete components and specimens respectively, measured the surface concentration of chloride ion by RCT and analyzed its time-varying model.Finally the expression of time similarity coefficient is put forward and its value is calculated, it provides the basis for life prediction of service structure.
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