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      • Department of Mechanical Engineering
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      A method of two-scale chemo-thermal-mechanical coupling for concrete

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      Author
      Wu, T.
      Temizer, İlker
      Wriggers, P.
      Date
      2011
      Source Title
      Proceedings of the 11th International Conference on Computational Plasticity, COMPLAS 2011
      Publisher
      CIMNE
      Pages
      1626 - 1637
      Language
      English
      Type
      Conference Paper
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      Abstract
      The Alkali Silica Reaction(ASR) is one of the most important reasons to cause damage in cementitious constructions, which can be attributed to the expansion of hydrophilic gel produced in the reaction. In this contribution, the chemical extent is described depending on the temperature and it has influences on damage parameters. Expansions of the gel are assumed to only happen in the micropores of Hardened Cement Paste. Afterwards, the homogenization of damage in the microscale is initialized and the effective damage can be applied in the mesoscale directly. Moreover, parameter identification is implemented to extract the effective inelastic consititutive equation. In all, 3D multiscale chemo-thermo-mechanical coupled model is set up to describe the damage in the concrete due to ASR.
      Keywords
      Alkali silica reaction
      Coupling
      Coupled models
      Damage parameter
      Hardened cement paste
      Homogenization
      Hydrophilic gel
      Mesoscale
      Micro-scales
      Micropores
      Multiscales
      Concretes
      Plasticity
      Silica
      Three dimensional
      Thermal expansion
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      http://hdl.handle.net/11693/28268
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