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Analyse micromécanique des variations dimensionnelles de matériaux alvéolaires — Application au polystyrène expansé

Abstract : This work aims at improving the manufacturing process of expanded polystyrene (EPS) slabs by Lafarge-Plâtre. It consists in better controlling their after-shrinkage which is the dimensional shrinkage that occurs with time from the temperature stabilisation at 20°C and that is responsible for the warping, and possibly, the breaking of EPS/plaster sandwiches. To do so, this work has investigated the physico-mechanical causes of such a phenomenon by means of multi-scales mechanics and experiments: it is shown how the EPS after-shrinkage can result from peculiar macromolecular movements called β secondary transitions.
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https://pastel.archives-ouvertes.fr/tel-00282617
Contributor : Teddy Fen-Chong <>
Submitted on : Wednesday, May 28, 2008 - 1:22:28 AM
Last modification on : Thursday, September 24, 2020 - 4:00:22 PM
Long-term archiving on: : Friday, May 28, 2010 - 6:30:34 PM

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  • HAL Id : tel-00282617, version 1

Citation

Teddy Fen-Chong. Analyse micromécanique des variations dimensionnelles de matériaux alvéolaires — Application au polystyrène expansé. Mécanique [physics.med-ph]. Ecole Polytechnique X, 2008. Français. ⟨tel-00282617⟩

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