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Comportement dynamique du béton frais : application au procédé de fabrication des parpaings

Abstract : An experimental test of compactibility of the freshly mixed concrete is developed. The compaction of material is carried out under the action of repeated impacts of a falling weight. This Proctor test is instrumented with Hopkinson bars , a dynamic measurement technique. The stress measurement during the first impact enables to detect a change in the rheology and to analyze it. The efficiency of the compaction under impacts is quantified. A complementary test is conceived. It consists in compacting the material under compression and vibration. The mechanisms of the compaction and the influence of the parameters are analyzed. From the analogy between the vibration and the temperature, tests of characterization of the viscoplastic behavior of the vibrated freshly mixed concrete are realized.
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https://tel.archives-ouvertes.fr/tel-00133659
Contributor : Ens Cachan Bibliothèque <>
Submitted on : Tuesday, February 27, 2007 - 12:39:45 PM
Last modification on : Monday, February 15, 2021 - 10:48:47 AM
Long-term archiving on: : Tuesday, April 6, 2010 - 11:00:26 PM

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  • HAL Id : tel-00133659, version 1

Citation

Stéphane Pattofatto. Comportement dynamique du béton frais : application au procédé de fabrication des parpaings. Matériaux. École normale supérieure de Cachan - ENS Cachan, 2004. Français. ⟨tel-00133659⟩

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