Computers and Concrete

  • 제10권5호
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  • Pages.523-539
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  • 2012
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  • 1598-8198(pISSN)
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  • 1598-818X(eISSN)
테크노프레스 (Techno-Press)
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DOI QR코드

DOI QR Code

Modeling of chloride diffusion in a hydrating concrete incorporating silica fume

  • Wang, Xiao-Yong (Department of Architectural Engineering, College of Engineering, Kangwon National University) ;
  • Park, Ki-Bong (Department of Architectural Engineering, College of Engineering, Kangwon National University) ;
  • Lee, Han-Seung (School of Architecture & Architectural Engineering, Hanyang University)
  • 투고 : 2011.10.30
  • 심사 : 2012.05.23
  • 발행 : 2012.11.25
⟨ 이전 논문 다음 논문 ⟩

초록

Silica fume has long been used as a mineral admixture to improve the durability and produce high strength and high performance concrete. And in marine and coastal environments, penetration of chloride ions is one of the main mechanisms causing concrete reinforcement corrosion. In this paper, we proposed a numerical procedure to predict the chloride diffusion in a hydrating silica fume blended concrete. This numerical procedure includes two parts: a hydration model and a chloride diffusion model. The hydration model starts with mix proportions of silica fume blended concrete and considers Portland cement hydration and silica fume reaction respectively. By using the hydration model, the evolution of properties of silica fume blended concrete is predicted as a function of curing age and these properties are adopted as input parameters for the chloride penetration model. Furthermore, based on the modeling of physicochemical processes of diffusion of chloride ion into concrete, the chloride distribution in silica fume blended concrete is evaluated. The prediction results agree well with experiment results of chloride ion concentrations in the hydrating concrete incorporating silica fume.

키워드

과제정보

연구 과제번호 : study on the carbonation prediction of concrete using Portland blast furnace slag hydrationmodel

연구 과제 주관 기관 : National Research Foundation of Korea

참고문헌

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피인용 문헌

  1. Chloride penetration resistance of concrete containing ground fly ash, bottom ash and rice husk ash vol.13, pp.1, 2014, https://doi.org/10.12989/cac.2014.13.1.017
  2. Chloride diffusivity of concrete: probabilistic characteristics at meso-scale vol.13, pp.2, 2014, https://doi.org/10.12989/cac.2014.13.2.187
  3. Chloride diffusion in concrete associated with single, dual and multi cation types vol.17, pp.1, 2016, https://doi.org/10.12989/cac.2016.17.1.053
  4. Testing of the permeability of concrete box beam with ion transport method in service vol.15, pp.3, 2015, https://doi.org/10.12989/cac.2015.15.3.461
  5. Modelling of chloride diffusion in saturated concrete vol.15, pp.1, 2015, https://doi.org/10.12989/cac.2015.15.1.127