Experimental study and numerical estimation of the early age behavior of a massive concrete structure

Author(s): Bary Benoit, Bastiaens Wim, Bernachy-Barbe Fabien, Honorio Tulio, Imbert Christophe, Neji Mejdi, Poyet Stéphane, Segarra Corinne, Touzé Gaëtan
Paper category: Proceedings
Book title: Proceedings of the 2nd International RILEM/COST Conference on Early Age Cracking and Serviceability in Cement-based Materials and Structures Volume 2
Editor(s): Stéphanie Staquet and Dimitrios Aggelis
ISBN:978-2-35158-200-8
e-ISBN:978-2-35158-198-8
Publisher: RILEM Publications SARL
Publication year: 2017
Pages: 677-682
Total Pages: 6
Language : English

Abstract: The accurate description of the early-age evolutions of the chemical, thermal and mechanical properties of concrete in massive structures is crucial. We present a study making use of data gathered in an extensive experimental campaign to characterize these properties on a particular material. Once the chemical affinity related to the hydration processes properly identified and the parameters of the chosen constitutive equations calibrated, the response due to hydration, convection, solar flux and external temperature of massive structures can be simulated. In this regard, the early age thermo-mechanical behavior and related cracking risks of a structure designed for nuclear waste storage in Dessel (Belgium) are evaluated. Realistic environmental and mechanical boundary conditions are adopted. The results obtained show that the maximum temperature reached in the structure for a casting period ranging from August to September doesnot exceed 58°C. Moreover, the damage calculated is very limited, indicating that the structure meets the requirements concerning the early age behavior.

Online publication : 2017
Publication type : full_text
Public price (Euros) : 0.00