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Contribution à l'analyse physique et à la modélisation du fluage propre du béton

Abstract : This research is devoted to the study of the behaviour of concrete under an external long-duration applied load. It may be considered as a step towards physical modeling of basic creep. An analysis of the chemo-physical processes within the material's microstructure is first presented; in parallel, the phenomenological aspects of the macroscopic behaviour under load are summed up. The whole is supported by an experimental work which focuses on strain ageing and unloading. A macroscopic modeling is then proposed which takes explicitely into account the hydration and viscous rate-determining mechanisms acting on the microscopic scale. Finally, it is dealt with identification and experimental determination of the parameters of the model from standard experiments.
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Submitted on : Monday, October 4, 2010 - 4:52:05 PM
Last modification on : Wednesday, September 4, 2019 - 1:52:12 PM
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Isabelle Guénot-Delahaie. Contribution à l'analyse physique et à la modélisation du fluage propre du béton. Mécanique [physics.med-ph]. Ecole Nationale des Ponts et Chaussées, 1996. Français. ⟨tel-00523284⟩

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