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- 저자 : 전민하(Chun Min-Ha) (검색결과 2 건)
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[제5분과/내구성/진단 및 보수·보강] 염해에 대한 해양 콘크리트 구조물의 내구성 평가
김성칠(Kim Sung-Chil),김해수(Kim Hea-su),전민하(Chun Min-Ha),김형윤(Kim Hyeong-yun) 한국구조물진단유지관리학회 2004 한국구조물진단학회 학술발표회논문집 Vol.- No.-
Social overhead capitals such as roads, harbors and large structures have been recently constructed along with economic development. It is particularly expected that the various coastal structures, which are petroleum reserving facilities, entertainment facilities, and bridges connecting between island and land, or among islands, are rapidly increased and enlarged. Therefore, the durability assessment of concrete structures for salt-attack IS indispensable. When coastal concrete structures are designed, it is important to investigate collectively the design, construction and maintenance plans in order to enhance the endurance for salt-damage. When especially designing the durability for salt-attack, the primary design must be carried out based upon the allowance for crack width, the limit of water-cement ratio, the limit of concrete compression strength, the limit of the amount of cement per unit and the limit of covered thickness. In this research, a requirement design table was calculated with various environmental conditions according to the goal of durability lifetime specified on the data sheets. Diffusion equation was solved using Fick's diffusion law with the variable of the water-cement ratio. The universal validity and simplicity was investigated through the suggestion of requirement design table and real examples. As the result of investigation, the application capability of the suggested requirement design table was excellent, and the calculation for demanding cover was not needed. The investigation of goal durability period was easily verified through graphs.
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김성칠 ( Kim Sung-chil ),김해수 ( Kim Hea-su ),전민하 ( Chun Min-ha ),김형윤 ( Kim Hyeong-yun ) 한국구조물진단유지관리공학회 2004 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.8 No.1
Social overhead capitals such as roads, harbors and large structures have been recently constructed along with economic development. It is particularly expected that the various coastal structures, which are petroleum reserving facilities, entertainment facilities, and bridges connecting between island and land, or among islands, are rapidly increased and enlarged. Therefore, the durability assessment of concrete structures for salt-attack is indispensable. When coastal concrete structures are designed, it is important to investigate collectively the design, construction and maintenance plans in order to enhance the endurance for salt-damage. When especially designing the durability for salt-attack, the primary design must be carried out based upon the allowance for crack width, the limit of water-cement ratio, the limit of concrete compression strength, the limit of the amount of cement per unit and the limit of covered thickness. In this research, a requirement design table was calculated with various environmental conditions according to the goal of durability lifetime specified on the data sheets. Diffusion equation was solved using Fick’s diffusion law with the variable of the water-cement ratio. The universal validity and simplicity was investigated through the suggestion of requirement design table and real examples. As the result of investigation, the application capability of the suggested requirement design table was excellent, and the calculation for demanding cover was not needed. The investigation of goal durability period was easily verified through graphs.
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