Abstract
As an introduction, this chapter summarizes in a first step the physical aspects of heated concrete. Interactions between moisture transport and physical changes, heat flux, pore pressure changes, microstructure and associated volumetric changes, mechanical properties and spalling phenomena are described. Main types of models are introduced in a second step. Concerning design purposes, codes and standards generally apply to classical situations, i.e. typical structural members, such as beams, columns and plates. Prescriptive methods and performance-based approaches are introduced. The possibilities offered by the routinely made calculations and their limitations are discussed. More comprehensive Thermo-Hydro-Chemo-Mechanical (THCM) models are needed for special applications. Refined mechanical constitutive equations are then required (as for example description of elastic, plastic, damage, thermal, creep and shrinkage strains changes during heating).
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Millard, A. (2019). Introduction. In: Millard, A., Pimienta, P. (eds) Modelling of Concrete Behaviour at High Temperature. RILEM State-of-the-Art Reports, vol 30. Springer, Cham. https://doi.org/10.1007/978-3-030-11995-9_2
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DOI: https://doi.org/10.1007/978-3-030-11995-9_2
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