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Caractérisations multiéchelles de surfaces cimentaires de parement en fonction de différentes surfaces coffrantes

Abstract : The objective of this work is to study the interaction between cement and different types of formwork surfaces by analysing the surface condition of the raw cement paste 24 hours old and that of formwork surfaces at different scales as well as their demoulding performance. Surface characterisation procedures combining interferometry, SEM + EDS, Raman spectroscopy and AFM Peak Force are developed. These multiscale characterisations allow the demonstration of the impact of the physico-chemical properties of formwork surfaces on cementitious surfaces at different scales and the analysis of their influence on adhesion to formwork. The effect of surface geometry and surface energy of formwork surfaces on the morphological, chemical and mechanical characteristics of cement surfaces is analysed, from millimetre to nanometre, with a discussion on the possible characterisation of cement phases more or less hydrated.
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Submitted on : Wednesday, September 30, 2020 - 10:57:24 AM
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  • HAL Id : tel-02953447, version 1

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Calypso Chadfeau. Caractérisations multiéchelles de surfaces cimentaires de parement en fonction de différentes surfaces coffrantes. Mécanique des matériaux [physics.class-ph]. Université de Strasbourg, 2020. Français. ⟨NNT : 2020STRAD005⟩. ⟨tel-02953447⟩

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