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A Study on the Improvement of Durability Design of Underground RC Structures  

Im, Jung-Soon (경기대학교 토목환경공학부)
Bahng, Yun-Suk (경기대학교 토목환경공학부 토목공학과)
Publication Information
Journal of the Korean Society of Hazard Mitigation / v.7, no.4, 2007 , pp. 13-18 More about this Journal
Abstract
The research was performed to review the design factors which affect the durability of structures. For the study, domestic and foreign literature review were performed on various design criteria. Based on Korean standard specifications, the results showed that the durability of structure as the diameter of reinforcing steel bar becomes smaller and the distance between reinforcing bar is closer than the normal gap. The results were also presented that the minimum required bar cover is 6.6cm to obtain the durability index value. In addition, the maximum limited bar cover was 12cm considering the durability index and the change of increasing value of durability index. In case that there is no specified regulation for the bar cover thickness change, the durability life by neutralization is proportional to the thickness of bar cover.
Keywords
bar cover; durability index; increasing value of durability index; durability life;
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