Modélisation du fluage propre du béton nucléaire au jeune âge
Résumé
A numerical model has been developed to predict early age strains for massive concrete structures. Taking into account creep at early-age is essential if one wants to predict quantitatively the induced stresses if autogenous or thermal strains are restrained. We propose a model of creep takes into account the effect of the hydration and the maturity of material. The evolution of the Young's modulus according to the degree of hydration is a parameter essential took into account in modelling. By introducing our model into a code of element finite (Cast3m), we obtain more logical results. A comparison between experimental calculation and results was carried out.
Domaines
Matériaux
Origine : Fichiers produits par l'(les) auteur(s)
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