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NTIS 바로가기한국건축시공학회지 = Journal of the Korea Institute of Building Construction, v.17 no.3, 2017년, pp.235 - 243
이형민 (Department of Architectural Engineering, Hanyang University) , 이한승 (School of Architecture, Hanyang University)
Carbonation of concrete is being occurred due to interaction of atmospheric carbon dioxide with hydroxides. Reinforce concrete (RC) structure is getting collapse or accident due to corrosion of embedded steel rebar. The maintenance of reinforced concrete structure recently has the attention of resea...
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핵심어 | 질문 | 논문에서 추출한 답변 |
---|---|---|
콘크리트의 탄산화는 어떤 요인 중 하나인가 ? | 콘크리트의 탄산화는 철근콘크리트 구조물의 주요 열화 요인 중 하나이다[1,2,3]. 대기중의 CO2가 콘크리트 내부로 침투하여 콘크리트의 알칼리성을 저하시킨다[4,5]. | |
보수재 종류는 ? | 보수재 유/무로 나누어 표면보수후의 콘크리트를 가정했다. 보수재 종류로 유기계 알칼리방청제(OAI), 방청표면 피복재(ISC), 방청모르타르(IM), 수성페인트(WP)를 시공했다. Table 2는 콘크리트 배합표이다. | |
콘크리트의 탄산화 과정은 ? | 콘크리트의 탄산화는 철근콘크리트 구조물의 주요 열화 요인 중 하나이다[1,2,3]. 대기중의 CO2가 콘크리트 내부로 침투하여 콘크리트의 알칼리성을 저하시킨다[4,5]. 이는 철근을 감싸고 있는 부동태 피막을 파괴시켜 철근이 부식될 환경에 노출된다. 철근이 부식하게 되면 팽창하여 체적이 증가함에 따라 콘크리트에 균열이 발생한다. 이 때문에 부재의 내력이 저하되어 구조물의 내구성을 저하시킨다[6,7]. 이러한 문제점으로 인하여 최근 기존 RC구조물을 대상으로 보수가 많이 이루어지고 있다. |
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