EXPERIMENTAL RESEARCH ON CHLORIDE THRESHOLD LEVEL OF STEEL CORROSION IN SYNTHETIC PORE SOLUTION UNDER HIGH TEMPERATURE

Zhou Jianting; Song Xiaobing

doi:10.13204/j.gyjz201105003

Volume 41 Issue 5

Dec. 2014

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Zhou Jianting, Song Xiaobing. EXPERIMENTAL RESEARCH ON CHLORIDE THRESHOLD LEVEL OF STEEL CORROSION IN SYNTHETIC PORE SOLUTION UNDER HIGH TEMPERATURE[J]. INDUSTRIAL CONSTRUCTION, 2011, 41(5): 10-13,22. doi: 10.13204/j.gyjz201105003

Citation:

Zhou Jianting, Song Xiaobing. EXPERIMENTAL RESEARCH ON CHLORIDE THRESHOLD LEVEL OF STEEL CORROSION IN SYNTHETIC PORE SOLUTION UNDER HIGH TEMPERATURE[J]. INDUSTRIAL CONSTRUCTION, 2011, 41(5): 10-13,22. doi: 10.13204/j.gyjz201105003

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EXPERIMENTAL RESEARCH ON CHLORIDE THRESHOLD LEVEL OF STEEL CORROSION IN SYNTHETIC PORE SOLUTION UNDER HIGH TEMPERATURE

doi: 10.13204/j.gyjz201105003

1.
Department of Civil Engineering,Shanghai Jiaotong University,Shanghai 200240,China

Received Date: 2009-11-23
Publish Date: 2011-05-20

Abstract

Abstract

The steel rebar inside reinforced concrete structures is susceptible to corrosion when Cl-content at the surface of the steel exceeding a chloride threshold level(CTL).The CTL is an important influence on the service life of concrete structures exposed to chloride environments.Especially in high temperature regions, reinforced concrete structures are more severely damaged.The paper focused on studying the influence of high temperature on CTL.The experiment was carried out in 50 ℃ synthetic pore solution, considering the influences of electric potentials and pHs, and CTL of 95% acceptance value achieved.Results show that CTL under 50 ℃ is much smaller than that under normal temperature(25 ℃), and the controlling effect of temperature is more obvious as the corrosion potential decreases and pH value increases.Fitting curve of CTL to temperature was also presented.
- high temperature,
- steel corrosion,
- chloride threshold level( CTL),
- influence of temperature

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References(14)

References

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[2] 张誉.混凝土结构耐久性概论[M].上海:上海科学技术出版社,2003.

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