Exposure Test and Accelerated Test for Reinforced Concrete Structure.

钢筋混凝土结构的暴露试验和加速试验。

• 批准号: 62550416
• 负责人: OSHIRO Takeshi
• 金额: $ 1.34万
• 依托单位: University of the Ryukyus
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (C)
• 财政年份: 1987
• 资助国家: 日本
• 起止时间: 1987 至 1988
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-62550416/
• 关键词: Exposure Test; Accelerated Test; Reinforced Concrete; 塩素イオン; 暴露実験; 鉄筋コンクリートの劣化; 自然電位; 塩分量

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.

1984年建造的一座试验楼在日本冲绳的亚热带天气下暴露在海洋环境中。研究了氯离子在混凝土中的浓度、半电池电位随时间的变化以及表面涂层的保护效果，进行了干湿循环试验、盐雾试验和海水浸泡试验三种加速试验，并将结果与暴露试验进行了相关性分析，用Fick定律监测了氯离子的扩散。将扩散方程转化为差分方程组，在初值条件下对时间进行求解。将这些结果与田间试验结果进行了比较，得出了它们之间的关系。

项目成果

Takeshi Oshiro: "Exposure Test for Steel Corrosion by Chloride Attack" Transactions of the Japan Concrete Institute. vol.11. (1989)

Takeshi Oshiro：“氯化物侵蚀钢腐蚀的暴露试验”日本混凝土协会交易。

大城武: コンクリート工学年次論文報告集. 第11巻. (1989)

Takeshi Oshiro：混凝土工程年度论文报告集第 11 卷。（1989 年）