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콘크리트구조물에 발생한 비구조균열의 원인분석을 위한 진단기법의 개발과 활용사례
신홍철 ( Shin Hong-chol ),우영제 ( Woo Young-je ),박유신 ( Park You-shin ),한장현 ( Han Jang-hyun ),한영철 ( Han Young-chul ),권영진 ( Kwon Young-jin ),김무한 ( Kim Moo-han ) 한국구조물진단유지관리공학회 1998 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.2 No.1
There is a crack appearing on the concrete structure from one made and that exert a bad influence on concrete structure. These cracks are variable, causes more than 3 are acting compositively as you see, crack occupy a important position, from the flank of maintance refair, of concrete structure, recently though a sefety diagnosis on the crack of concrete structure is acting briskly, for that reason, most cases are only pat emphasis on the process of a sefety diagnosis of structural crack. In this study, therefore, we propose an analysis method of none-structural crack appearing on the concrete structure from the flank of mix proportion and material, and it is an aim to examine the point at issue of the test.
장기 옥외폭로에 따른 우레탄 도막 방수재의 물리적 특성 연구
서정일 ( Suh Jung-il ),신홍철 ( Shin Hong-chol ),김영근 ( Kim Young-geun ),김영삼 ( Kim Young-sam ) 한국구조물진단유지관리공학회 2020 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.24 No.1
열과 수분 등의 기후 환경에 의한 열화와 구조물의 장기 균열 거동에 의한 물리적 열화는 방수재의 물성을 점차 감소시켜 궁극적으로 구조물 누수를 야기한다. 본 연구에서는 10년간 옥외폭로 시험에 의한 우레탄 방수재의 인장 특성을 확인함으로써 유지관리 측면에서 우레탄 도막 방수재의 장기 내구성을 평가하였다. 그 결과 10년간 옥외에 노출된 방수재의 인장강도 및 신장률은 모두 감소하였으며, 대부분의 인장성능 저하가 5년 내 진행되었다. 따라서 옥외폭로시험에 의한 기초 데이터베이스 기반 물리적 성능예측 및 주기적인 유지 보수를 통해 우레탄 도막 방수재의 성능을 유지할 필요가 있다.
고도정수처리용 내오존 불소변성 우레탄 아크릴레이트 방수·방식재의 개발을 위한 기초적 연구
노상균(Noh Sang-Kyun),김성래(Kim Sung-Rea),신홍철(Shin Hong-Chol),김영근(Kim Young-Geun) 대한건축학회 2012 大韓建築學會論文集 : 構造系 Vol.28 No.8
In this study, as a basic study for developing water proof and anti-corrosive materials that can secure durability regarding ozone environment, summary of its result is as following. As the result of observation of surface before and after ozone treatment, in case of epoxy, urea, urethane and hybrid, which are existing waterproof and anti-corrosive materials, cracks by multiple gaps and splits on the surface were generated while in case of fluorine degeneration urethane acrylate, which is ozone-resistance, waterproof and anti-corrosive material, excellent result was appeared as the surface was relatively smooth. Reduction quantity of mass before and after ozone treatment was about 10% in case of epoxy, urea, urethane and hybrid, which are existing waterproof and anti-corrosive materials, as well as fluorine degeneration urethane acrylate, which is ozone-resistance, waterproof and anti-corrosive material. Therefore, it is believed that it can be utilized as excellent ozone-resistance, waterproof and anti-corrosive material in the future if its disadvantage is supplemented and corrected through additional researches on prevention of changes of color and for securing economic feasibility.