Exposure Test and Accelerated Test for Reinforced Concrete Structure.

1984年在日本冲绳建造的试验建筑暴露在亚热带气候下的海洋环境中。研究了混凝土中氯离子浓度、半电池电位随时间的变化以及表面涂层的保护作用。进行了干湿循环试验、盐雾试验和海水浸泡试验等3种加速试验，并研究了试验结果与暴露试验的相关性。用菲克定律监测氯离子的扩散。将扩散方程转化为差分方程，在初始条件下按时间进行求解。将这些结果与野外的结果进行了比较，得出了两者之间的关系。

A test building constructed in 1984 was exposed to marine environment under sub-tropical weather of Okinawa, Japan. Concentration of chloride ions in concrete, changes in the half cell potentials with time and protective effects of surface coatings were investigated.The three accelerated tests such as dry-wet cycle test, salt spray test and sea-water immersion test were performed, and the results are studied for correlation with the exposured tests.Diffusion of chloride ions was monitored using Fick's law. the diffusion equation was converted to difference equation and solved under the initial condition in terms of time. These results were compared with those of the field, and the relationships were obtained.