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박래선(Park Rhae-Sun),이상순(Lee Sang-Soon),임채운(Lim Chae-Woon) 한국구조물진단유지관리학회 2003 한국구조물진단학회 학술발표회논문집 Vol.- No.-
Fire may lead to web shear buckling in steel box girders due to degradation of the steel strength at elevated temperatures. In this paper, shear buckling strength and ultimate shear strength are evaluated at elevated temperature and stability analysis for fire-damaged web plate is performed.
표면처리방법을 이용한 순환골재의 품질향상에 관한 실험적 연구
박래선(Park Rae Sun),배주성(Bae Ju Seong) 대한토목학회 2007 대한토목학회논문집 A Vol.27 No.3A
최근 들어 폐콘크리트로부터 생산되는 순환골재를 천연골재의 대체재로 재활용하려는 연구가 활발히 진행되고 있다. 폐콘크리트가 대부분을 차지하고 있는 건설폐기물이 매년 크게 증가하고 있어 순환골재의 재활용이 대량으로 이루어진다면 골재의 부족난 해소 뿐 아니라 폐콘크리트의 매립처리에 따른 경비절감 및 환경문제의 발생을 줄이는데 크게 기여할 것이다. 그러나 순환골재는 천연골재에 비해 물성이 나쁜 단점이 있어 이를 개선하는 것이 순환골재의 재활용을 위한 선결과제라 할 수 있다. 따라서 본 연구에서는 순환골재를 표면처리하여 그 물성을 개선할 목적으로 표면처리용액의 종류 및 농도, 용액함침시간, 함침 후 건조방법 및 건조시간을 다양하게 변화시켜 표면처리한 순환골재의 물성 측정결과를 비교 고찰하여 가장 효과적인 표면처리 방법을 도출함으로써 순환골재를 천연골재의 대체재로 재활용하는데 기여하고자 한다. Recently, much researches have been made to use recycled aggregates that are produced from waste concretes; the recycled aggregates may be used instead of the natural aggregates. As the amount of construction waste, most of which is waste concrete, increases steeply every year, large-scale recycling of recycled aggregates will solve the aggregate shortage as well as cutting the cost and environmental damages incurred in the process of burying the wastes. However, the recycled aggregates have the disadvantages of inferior properties which must be solved in order to reuse recycled aggregates. Hence this research aims to contribute to the alternative use of recycled aggregate by improving the physical characteristics through surface treatment: the type of surface treatment solution, its concentration, impregnation time, drying method and drying time will be varied and the physical characteristics of recycled aggregates will be compared accordingly in order to deduce the most efficient method of surface treatment.
박래선 ( Park Rae-sun ),이상순 ( Lee Sang-soon ),서상길 ( Seo Sang-gil ) 한국구조물진단유지관리공학회 2003 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.7 No.2
Health indices of highway bridges by the routes and superstructure types are investigated. Based on Health indices, maintenance satisfaction indices are proposed and evaluated. Maintenance goal for highway bridges is established and the strategies to archive the goal are proposed. Life cycle cost analyses of current maintenance and preventive maintenance are also performed.
박래선(Park Rae-Sun),이상순(Lee Sang-Soon),서상길(Seo Sang-Gil) 한국구조물진단유지관리학회 2003 한국구조물진단학회 학술발표회논문집 Vol.- No.-
Health indices of highway bridges by the routes and superstructure types are investigated. Based on Health indices, maintenance satisfaction indices are proposed and evaluated. Maintenance goal for highway bridges is established and the strategies to archive the goal are proposed. Life cycle cost analyses of current maintenance and preventive maintenance are also performed.
박래선 ( Park¸ Rhae-sun ),이상순 ( Lee¸ Sang-soon ),임채운 ( Lim¸ Chae-woon ) 한국구조물진단유지관리공학회 2003 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.7 No.2
Fire may lead to web shear buckling in steel box girders due to degradation of the steel strength at elevated temperatures. In this paper, shear buckling strength and ultimate shear strength are evaluated at elevated temperature and stability analysis for fire-damaged web plate is performed.