基于海洋暴露试验的氯离子扩散系数时空模型研究

Study on the time-spatial model of diffusion coefficient of chloride ion in concrete on the basis of coastal exposure test

在我国腐蚀条件最为恶劣的海南八所港,对3种配合比的混凝土试件进行实海暴露试验,通过测定浪溅区条件下氯离子在混凝土中侵入量,研究氯离子有效扩散系数随时间和深度的演变,为准确预测混凝土结构的使用寿命提供参考。

A coastal exposure test of concrete specimens for 3 different mixtures was conducted in Basuo Port, Hainan, which is one of the ports with worst corrosive conditions in China. The test was carried out to research that the effective diffusion coefficient of chloride ion changes with exposure time and evolution depth by determining the penetration content of chloride ion into specimens in the conditions of splash zone, which provides a reference for predicting perfectly the service life of concrete structures.