한국건축시공학회지 (Journal of the Korea Institute of Building Construction)

  • 제11권4호
  • /
  • Pages.371-378
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  • 2011
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  • 1598-2033(pISSN)
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  • 2233-5706(eISSN)
한국건축시공학회 (The Korean Institute of Building Construction)
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콘크리트 흡수 수분확산계수 산정을 위한 실험 및 수치해석 모델 개발

Development of Testing and Analysis Model for Evaluation of Absorbed Water Diffusion into Concrete

  • Park, Dong-Cheon (Department of Architecture and Ocean Space, College of Ocean Science and Technology, Korea Maritime University) ;
  • Ahn, Jae-Cheol (Department of Architecture and Ocean Space, College of Ocean Science and Technology, Korea Maritime University)
  • 투고 : 2011.04.25
  • 심사 : 2011.06.14
  • 발행 : 2011.08.20
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초록

콘크리트는 다공질로서 수분이 접하게 되면 시간경과에 따라 흡수가 일어난다. 다양한 배합의 콘크리트에서 어느 정도 수분 흡수가 빨리 일어나는가는 흡수수분 확산계수 산출을 통하여 가능하며, 본 연구에서는 길이가 다른 시험체의 질량 경시변화를 통하여 깊이별 흡수 수분량을 산출하였다. 흡수 수분 확산계수는 시간과 깊이의 함수로 이뤄진 볼츠만 변수를 사용하여 실험값과의 회귀분석을 통하여 구하였으며, 그 정확도는 비선형 유한요소 과도해석을 통하여 검증하였다.

Concrete is affected by various deterioration factors, such as $CO_2$ and chloride ions from the sea, which cause carbonation and salt attack on concrete. These deterioration phenomena cause steel corrosion in RC structures. Although a great deal of research has been carried out in this area thus far, it is difficult to know the point at which corrosion will occur to a reinforced bar. As the diffusion of deterioration factors depends on the water content in concrete, it is imperative to assess the condition of absorbed water content. A mass measuring method was applied to calculate the absorbed water diffusion coefficient, as well as non-linear finite element method(FEM) analysis. As a result, it was found that W/C and unit water content in concrete mixture affect the diffusion coefficient decision.

키워드

참고문헌

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