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Modélisation de la pénétration d'une colle à solvant dans un milieu poreux

Erwan Le Bris
Abstract : One reinforcement technique for concrete structures consists of using a tension-resistant material (carbon fibers in an epoxy matrix), tightly linked to the concrete support by means of an adhesive through which stresses are transmitted. Reported failures in actual applications are usually due to a poor-quality adhesive/concrete joint.
This work is aimed at studying the joint formation phase. We have focused on the adhesive penetration process that precedes polymer curing. A solvent-based type of adhesive and a hardened cement paste have been selected for this study. A first part consists in defining the various physical phenomena associated with the process of penetration then to establish the system of differential equations describing these phenomena analytically. One second part describes the experimental means and the bibliographical sources making it possible to have the characteristics necessary to the resolution of the equations. The problem of the adhesive deposited on the surface of cementing material is finally studied by a numerical method using the concepts of finite volumes and finite elements. The results obtained are presented and compared with various experimental methods of validation developed during this work.
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Submitted on : Monday, April 5, 2004 - 5:59:16 PM
Last modification on : Friday, March 27, 2015 - 4:02:23 PM
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  • HAL Id : tel-00005761, version 1

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Erwan Le Bris. Modélisation de la pénétration d'une colle à solvant dans un milieu poreux. Mécanique [physics.med-ph]. Ecole des Ponts ParisTech, 2003. Français. ⟨tel-00005761⟩

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