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Étude et modélisation des transferts hydriques et thermiques au sein des matériaux inorganiques poreux : application aux matériaux du patrimoine bâti ancien, exemple de l'Hypogée des Dunes à Poitiers et de la crypte de l'abbatiale de Saint-Savin-sur-Gartempe

Abstract : In the framework of preservation and rehabilitation of ancient buildings, materials used for their construction must be characterized with regards to thermal and hydric transfer properties. The first stage of our research work focused on the development of a sensor of thermal conductivity and moisture content of the inorganic porous materials (stone, concrete, render) making up the monuments. The methods of investigation have to remain non-invasive. For this purpose, the path followed was to adapt the measure of thermal conductivity by a simplified transient hot-wire method, previously developed for corrosive fluids, to dressed stones used in built heritage. In order to transfer this technology from fluids to the solids, several stages were carried out : (1) measures with the integrated wire, (2) surface measures, (3) estimation of the influence of surface roughness and (4) use of this method to estimate the moisture content of several test materials.The second stage of the research consisted in the microclimatic monitoring of two historical sites: the Hypogeum of the Dunes in Poitiers and the crypt of the abbey church of Saint-Savin-sur-Gartempe. The thesis work sought to evaluate the impact of construction work performed in the Hypogeum on the internal climatic conditions, and to determine the influence of climatic variations on the formation of a biological veil in the crypt of Saint-Savin. To this aim, correlative analysis is applied to the treatment of climatic data.
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https://tel.archives-ouvertes.fr/tel-01577915
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Submitted on : Monday, August 28, 2017 - 1:59:08 PM
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Benoit Merckx. Étude et modélisation des transferts hydriques et thermiques au sein des matériaux inorganiques poreux : application aux matériaux du patrimoine bâti ancien, exemple de l'Hypogée des Dunes à Poitiers et de la crypte de l'abbatiale de Saint-Savin-sur-Gartempe. Sciences de la Terre. Université de Poitiers, 2013. Français. ⟨NNT : 2013POIT2293⟩. ⟨tel-01577915⟩

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