Early age behaviour of concrete nuclear containments - Archive ouverte HAL
Journal Articles Nuclear Engineering and Design Year : 2008

Early age behaviour of concrete nuclear containments

Abstract

A numerical model has been developed to predict early-age cracking 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. Because creep strains may relax internal stresses, a creep model which includes the effects of hydration and temperature is used. For the prediction of cracking, a simple elastic damage model is used. Numerical simulations are performed in order to predict the behaviour of a massive wall and a concrete containment of a nuclear power plant. They show that significant relaxation of stresses (due to creep) occurs only after about 10 days, after cracking occurs. Moreover, since temperature in concrete may reach important values in massive concrete structures, it appears that effect of temperature on creep must be taken into account for an accurate prediction of cracking.

Domains

Materials
Fichier principal
Vignette du fichier
ArticleNED_final_revised.pdf (490.87 Ko) Télécharger le fichier
Origin Files produced by the author(s)

Dates and versions

hal-04693800 , version 1 (11-09-2024)

Licence

Identifiers

Cite

Farid Benboudjema, Jean-Michel Torrenti. Early age behaviour of concrete nuclear containments. Nuclear Engineering and Design, 2008, 238 (238), pp.2495-2506. ⟨10.1016/j.nucengdes.2008.04.009⟩. ⟨hal-04693800⟩
46 View
10 Download

Altmetric

Share

More