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서진원 ( Suh¸ Jin-won ),김용전 ( Kim¸ Tong-jeon ),이지영 ( Rhee¸ Ji-young ) 한국구조물진단유지관리공학회 2002 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.6 No.2
Generally, expansion joint is failed more frequently than other components during service life of the bridge. Retrofits and rehabilitations of expansion joints cause not only high maintenance cost but also intrusion to traffic. Therefore, the application of expansion joint with more superior durability, serviceability and maintenance convenience is required. For this purpose, data on failure of expansion joint installed on highway bridges from 1991 to 2000 was analysed. And visual inspection was performed.
차량탑재형 GPR을 이용한 교면포장 및 바닥판 상태평가
서진원 ( Suh¸ Jin-won ),이지영 ( Rhee¸ Ji-young ),옥창권 ( Ock¸ Chang-kwon ) 한국구조물진단유지관리공학회 2003 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.7 No.2
Concrete bridge decks, as well as asphalt pavement, are directly exposed to traffic loads and environmental conditions like rain water and deiceing chemicals causing the deteriorations and corrosion of top rebar. It difficult to detect the deterioration process by visual inspection because asphalt pavement show no sign until cavities are formed after deck deterioration. In this study, the Ground Penetrating Radar(GPR) mounted a van was tested to evaluate the condition of concrete decks as well as asphalt pavement. Test results obtained by GPR were compared with damage by the visual survey and material property of asphalt overlay. The ground penetrating radar data shows promise for producing rapid and accurate condition assessment for bridge decks.