Early-age behaviour of concrete nuclear containments

By F. Benboudjema, J. Torrenti. 2008

144 citations recorded by the source corpus.

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.

Subfields: Civil and Structural Engineering

View Paper: https://www.semanticscholar.org/paper/4b2579dfd69a2214e781f531b3eb9f11be555dbe

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In Civil and Structural Engineering

Citations in the corpus

Properties of early-age concrete relevant to cracking in massive concrete (2019, background): “[2]); this approach is followed 67 especially when the cracking behavior is considered numerically.”
Early-Age Cracking in Concrete: Causes, Consequences, Remedial Measures, and Recommendations (2018, background): “Benboudjema and Torrenti [93] extended the basic creep model by including the effects of hydration to predict the behavior of a massive wall; they also used the concept of chemical affinity to predict the evolution of temperature and hydration.”