Concrete creep modelling for structural applications: non-linearity, multi-axiality, hydration, temperature and drying effects
作者： Alain Sellier , Stéphane Multon , Laurie Buffo-Lacarrière , Thierry Vidal , Xavier Bourbon
DOI: 10.1016/J.CEMCONRES.2015.10.001
关键词: Nonlinear system 、 Thermal 、 Structural engineering 、 Consolidation (soil) 、 Axiality 、 Drucker–Prager yield criterion 、 Materials science 、 Shrinkage 、 Mathematical model 、 Creep
摘要: Concrete creep models have to consider several important phenomena (non-linearity, multi-axiality, hydration, and thermal drying effects) be relevant in structural applications. A selection of experimental results tests found the scientific literature are used highlight these phenomena. Firstly, regarding rate different directions a specimen under various loads, it is shown that moderate loading can derive from elastic strains. Secondly, reason why Drucker Prager criterion chosen model non-linear discussed. Thirdly interest resorting theory able decouple ageing (or hydration) effects consolidation explained. Moreover, using poro-mechanical formulation, which Biot coefficient depends on stress state, shrinkage discussed light short meso-scopic analysis. The effect temperature also addressed. numerical implementation proposed modelling briefly exposed responses confronted with results.
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