Application of thermo-hydro-chemo-mechanical model for early age behaviour of concrete to experimental massive reinforced structures with strain–restraining system
- 14 March 2014
- journal article
- research article
- Published by Informa UK Limited in European Journal of Environmental and Civil Engineering
- Vol. 18 (7), 814-827
- https://doi.org/10.1080/19648189.2014.896754
Abstract
This paper presents the application of a thermo-hydro-chemo-mechanical (THCM) model to the design of actual massive structures with a system to restrain the strain at early age (thermal strains and autogenous shrinkage). The experimental campaign was performed in the French national project CEOS.fr. The modelling of early-age behaviour of reinforced concrete is first based on a hydration model, which is able to reproduce the variations of temperature, water content and mechanical properties according to hydration. Then a non-linear mechanical model is used (combining creep and damage models, both adapted to hardening concrete). The comparison between numerical results (obtained with a calculation time of around 12 h on an ordinary computer) shows that the models are able to reproduce the early-age behaviour of restrained reinforcement concrete structures (in terms of strains, global forces and crack patterns). Using steel-concrete interface elements (adapted to early age), the models are also able to reproduce the influence of reinforcement on cracking.Keywords
This publication has 18 references indexed in Scilit:
- Early age cracking of massive concrete piersMagazine of Concrete Research, 2011
- Chemo-Mechanical Modeling Requirements for the Assessment of Concrete Structure Service LifeJournal of Engineering Mechanics, 2011
- Thermo–hygro–mechanical modelling of self-induced stresses during the service life of RC structuresEngineering Structures, 2011
- Finite element modelling of hardening concrete: application to the prediction of early age cracking for massive reinforced structuresMaterials and Structures, 2011
- Identification of early-age concrete temperatures and strains: Monitoring and numerical simulationCement and Concrete Composites, 2009
- Early-age behaviour of concrete nuclear containmentsNuclear Engineering and Design, 2008
- Multiphasic finite element modeling of concrete hydrationCement and Concrete Research, 2007
- Modelling of concrete at early ages: Application to an externally restrained slabCement and Concrete Composites, 2006
- Introduction to continuum damage mechanicsMechanics of Elastic Stability, 1986
- Analysis of crack formation and crack growth in concrete by means of fracture mechanics and finite elementsCement and Concrete Research, 1976