Abstract
For the simulation of temperature fields and restraint stresses in hardening concrete structures, the properties of early age concrete has to be known. This report is an extract of a research project which dealt with the thermal and mechanical properties, stress-strain curve, creep and relaxation and autogenous shrinkage of early age concrete. Here, only the mechanical short and long-term properties of early age concrete will be dealt with. In addition to the experimental results, models will be presented.
Résumé
Pour pouvoir simuler les champs de température et les contraintes imposées de structures en béton en cours de durcissement, il faut connaître les propriétés du béton à un jeune âge. Ce rapport est extrait d'un projet de recherche qui traite des propriétés thermiques et mécaniques, de la courbe contrainte-dilatation, du fluage et de la relaxation ainsi que du retrait autogène du béton jeune. Seules les propriétés mécaniques à court et à long terme du béton jeune seront traitées ici. Outre les résultats expérimentaux, des modèles seront présentés.
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References
Gutsch, A.-W., ‘Properties of early age concrete-Experiments and models’, Doct. Thesis, TU Braunschweig, 1998; also in: Heft 495, Deutscher Ausschuss fuer Stahlbeton, Beuth Verlag, 1999 (in German).
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Gutsch, A.-W., ‘Influence of elevated temperature on creep and relaxation of early age concrete’, in Proceedings of the International Workshop on ‘Control of Cracking in Early Age Concrete’, 23./24.08.2000, Sendai, Japan, published by A. A. Balkema Publishers, Rotterdam, 2000.
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Editorial Note. Dr Ing. Alex-W. Gutsch is a RILEM Senior Member. He participates in the work of RILEM TC 181-EAS: ‘Early age shrinkage induced stresses and cracking in cementitious systems’.
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Gutsch, A.W. Properties of early age concrete-Experiments and modelling. Mat. Struct. 35, 76–79 (2002). https://doi.org/10.1007/BF02482104
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DOI: https://doi.org/10.1007/BF02482104