Abstract
Casting simulations of self-compacting concrete are carried out in order to obtain a value of the minimum fluidity needed to cast a VHPC precambered composite beam. The mix proportioning of the concrete takes into account this minimum value. The numerical predictions are finally compared with the experimental observations during two casting tests and the real casting of the two 13 m beams. Although the simplifying assumptions needed to carry out the simulations are numerous, there is an agreement between the predictions and the real casting.
Résumé
Des simulations de mise en oeuvre de bétons auto-plaçant ont été réalisées dans le but d’obtenir la maniabilité minimum permettant de garantir la mise en oeuvre d’une poutre composite préfléchie en BHP. La formulation du béton a été faite en prenant en compte le résultat du calcul. Les prédictions numériques ont alors été comparées aux observations expérimentales obtenues lors du coulage de deux éléments témoins te des deux poutres de 13 mètres. Malgré les nombreuses hypothèses simplificatrices nécessaires pour mener le calcul jusqu’à son terme, il y a un bon accord entre simulations et mise en oeuvre réelle.
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Acknowledgements
The authors are pleased to thank number of colleagues at LCPC who participated to this study: L. Vincent, J.-D. Simitambe, J. Carriat and F. Guirado, who realized the different batches; and S. Dubroca, L. Lauvin, M. Estivin, J. Billo and F.-X. Barin, who prepared and took in charge the beams casting. The support of the National Project ‹MIKTI’ (Ministry for Public Works—Civil Engineering R&D funds) is also gratefully acknowledged.
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Roussel, N., Staquet, S., Schwarzentruber, L.D. et al. SCC casting prediction for the realization of prototype VHPC-precambered composite beams. Mater Struct 40, 877–887 (2007). https://doi.org/10.1617/s11527-006-9190-0
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DOI: https://doi.org/10.1617/s11527-006-9190-0