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Experimental characterisation of the drying effect on uniaxial mechanical behaviour of mortar

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Abstract

The main objective of this present study was to evaluate, for a standard mortar, the drying effect on its mechanical behaviour. Numerous uniaxial compression tests were thus performed with loading-unloading cycles. They were carried out on different samples previously preserved under various conditions of conservation: preserved from desiccation, air drying and rapid drying at 60°C. The obtained results showed significant influences of these conditions on the material behaviour (increase in strength, decrease in Young's modulus and Poisson's ratio) and the necessity of taking into account the coupling effects between mechanical—poromechanical behaviours and drying.

Résumé

Cette étude a pour objet l'évaluation de l'effet du séchage sur le comportement mécanique d'un mortier normal. Dans ce but, plusieurs dizaines d'essais de compression uniaxiale avec cycles de charge-décharge ont été réalisés en fonction du temps de séchage et du mode de conservation des éprouvettes (saturées en eau, laissées en dessiccation dans une atmosphère contrôlée, séchées à 60°C jusqu'à poids constant). Les résultats obtenus démontrent l'influence importante de ces conditions sur le comportement du matériau (augmentation de la résistance, diminution du module de Young et du coefficient de Poisson) et la nécessité de la prise en compte du couplage comportement mécanique (poromécanique) et retrait de dessiccation.

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Authors and Affiliations

  1. Laboratory of Mechanics of Lille, UMR 8107, France

    I. Yurtdas, N. Burlion & F. Skoczylas

  2. Ecole Centrale de Lille, France

    I. Yurtdas & F. Skoczylas

  3. Polytech'Lille-USTL, Cité Scientifique, 59650, Villeneuve d'Ascq, France

    N. Burlion

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  1. I. Yurtdas
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  2. N. Burlion
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  3. F. Skoczylas
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Yurtdas, I., Burlion, N. & Skoczylas, F. Experimental characterisation of the drying effect on uniaxial mechanical behaviour of mortar. Mat. Struct. 37, 170–176 (2004). https://doi.org/10.1007/BF02481616

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  • DOI: https://doi.org/10.1007/BF02481616

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