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강바닥판 사장교의 폐단면 세로리브 내부 부식 원인 및 보강 방안
진상호 ( Jin Sang-ho ),주형석 ( Ju Hyeong-seok ),박승수 ( Park Sung-su ),채성욱 ( Chae Sung-wook ),이승철 ( Le Seung-chul ) 한국구조물진단유지관리공학회 2019 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.23 No.1
The purpose of this study is to investigate the causes of corrosion of steel plate deck longitudinal U-ribs and to investigate the reinforcement method. It was confirmed that the corrosion of the longitudinal U-ribs occurred due to penetration water of the bolt hole of the shear key used in construction. The longitudinal U-ribs which were corroded were stiffened by attaching reinforcing plates, and finishing treatment was performed to prevent the surface water from flowing into the inside.
장영재 ( Jang Young Jae ),주형석 ( Ju Hyeong Seok ),오달수 ( Oh Dal Soo ),임윤식 ( Lim Yoon Sik ),유동우 ( You Dong Woo ) 한국구조물진단유지관리공학회 2018 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.22 No.1
This study is to investigate and analyze the correlation of carbonation according to strength of concrete members for bridge in marine enviroment. Also depth of carbonation according to age for 100 years is estimated by carbonation rate coefficient. As a result of the measurement, it was found that the depth of carbonation decreases with increasing strength. This is because it is considered that water-cement ratio and amount of unit cement are influenced by the concrete mixing. Also, It is anticipated that rebar corrosion due to carbonation will not occur in concrete members.