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http://dx.doi.org/10.14346/JKOSOS.2013.28.6.029

An Experimental Study on Steel Bar Corrosion of Reinforced Concrete Structure  

Chae, Young-Suk (Department of Architectural Engineering, Woosong University)
Choi, Il-Yoon (Advanced HSR Research Division, Korea Railrode Research Institute)
Min, In-Ki (Department of Railroad Civil Engineering, Woosong Collage)
Publication Information
Journal of the Korean Society of Safety / v.28, no.6, 2013 , pp. 29-35 More about this Journal
Abstract
The purpose of this study is to investigate the steel bar corrosion and degree of reinforced concrete bridge, and analyze the cause of corrosion occurrence. Therefore they could ensure the durability and stability as to suggest the corrosion prevention of reinforced concrete structure. To study the corrosion state reinforced concrete structure, We investigate the cover of concrete, the compressive strength by schmidt hammer, the neutralization test of site, the compressive strength of core and the measurement of neutralized depth. As the results of test, the corrosion-grade of reinforced concrete structure which the degree of corrosion is 3, 4 degree get to 18% in the used time of 40 years and the time elapsed of 25 years. Therefore the corrosion of steel bar give rise to public discussion. The degree of corrosion is serious, and the neutralization come to the cover of concrete.
Keywords
corrosion-grade; concrete cover; neutralization; compressive strength;
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