Computers and Concrete

  • 제1권2호
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  • Pages.131-150
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  • 2004
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  • 1598-8198(pISSN)
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  • 1598-818X(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

A computational setting of calcium leaching in concrete and its coupling with continuum damage mechanics

  • Nguyen, V.H. (Laboratoire d Analyse des Materiaux et Identification, Institut Navier) ;
  • Nedjar, B. (Laboratoire d Analyse des Materiaux et Identification, Institut Navier) ;
  • Torrenti, J.M. (IRSN/DIR/Pg)
  • 투고 : 2003.09.17
  • 심사 : 2004.03.23
  • 발행 : 2004.05.25
⟨ 이전 논문 다음 논문 ⟩

초록

We present in this work a coupled phenomenological chemo-mechanical model that represents the degradation of concrete-like materials. The chemical behaviour is described by the nowadays well known simplified calcium leaching approach. And the mechanical damage behaviour is described by a continuum damage model which involves the gradient of the damage quantity. The coupled nonlinear problem at hand is addressed within the context of the finite element method. For the equation governing the calcium dissolution-diffusion part of the problem, special care is taken to treat the highly nonlinear calcium conductivity and solid calcium functions. The algorithmic design is based on a Newton-type iterative scheme where use is made of a recently proposed relaxed linearization procedure. And for the equation governing the damage part of the problem, an augmented Lagrangian formulation is used to take into account the damage irreversibility constraint. Finally, numerical simulations are compared with experimental results on cement paste.

키워드

참고문헌

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피인용 문헌

  1. Chemo-mechanical coupling behaviour of leached concrete vol.237, pp.20-21, 2007, https://doi.org/10.1016/j.nucengdes.2007.02.012
  2. A separation of scales homogenization analysis for the modelling of calcium leaching in concrete vol.195, pp.52, 2006, https://doi.org/10.1016/j.cma.2005.02.036
  3. A three-dimensional lattice Boltzmann method based reactive transport model to simulate changes in cement paste microstructure due to calcium leaching vol.166, pp.None, 2004, https://doi.org/10.1016/j.conbuildmat.2018.01.114
  4. On the phase-field modeling of fully coupled chemo-mechanical deterioration and fracture in calcium leached cementitious solids vol.238, pp.None, 2022, https://doi.org/10.1016/j.ijsolstr.2021.111380