A fully coupled Hydraulic Mechanical Chemical approach applied to cementitious material damage due to carbonation

نویسندگان

چکیده

Abstract Coupled Thermal-Hydraulic-Mechanical-Chemical (THMC) approaches may be important for assessing the long-term durability of cementitious materials. We present a multiphysics approach to overcome past limitations THMC modelling and validate it based on experimental results accelerated carbonation tests. Our numerical rests sequential coupling between Hytec Cast3m. computes evolution hydraulic mineralogical fields allowing compute micromechanical properties (e.g. Young’s modulus). The mineral reactions generate tensile stresses Cast3M associated strain tensors damage represented by opening or sealing cracks, impacting subsequent reactive transport processes. manages qualitatively represent crack patterns non-uniform degradation depths observed microtomographic images carbonated cement samples, which can only explained coupled dynamics chemical mechanical extended wide range cement-concrete pathologies contexts.

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ژورنال

عنوان ژورنال: npj Materials degradation

سال: 2023

ISSN: ['2397-2106']

DOI: https://doi.org/10.1038/s41529-023-00378-x