Abstract
Sliding tests were performed to investigate friction under transverse compressive loading along a crack within two different perforated clay bricks. Two procedures, corresponding to two different layers of the crack's plane, respectively parallel and 45o sloping from the direction of the brick's holes, have been followed. This is because the presence of such holes should give the block an anisotropic local behaviour. The aim of this testing is to develop the brick-to-brick local load transfer mechanism model in the sliding phase between the crack's faces; the results provide strong support for a simple, constant-friction model and lead to the evaluation of the related friction coefficient.
Résumé
Des essais de glissement ont été effectués afin d'étudier sous charge compressive transversale la friction le long d'une fissuration sur deux différentes briques perforées en argile. Deux procédures ont été suivies, correspondant à deux inclinaisons différentes du plan de la brique, respectivement, parallèle ou avec une pente de 45o dans le sens des perforations des briques. En effet, la présence de trous dans les briques devrait favoriser un comportement localement anisotropique. L'objectif de ces essais était de déterminer un modèle de comportement du mécanisme de transfert local des charges entre les briques dans la phase de glissement entre les surfaces des briques. Les résultats semblent confirmer la validité d'un modèle de friction simple et constant, et permettent l'évaluation du coefficient de friction correspondant.
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Bernardini, A., Modena, C. & Valluzzi, M.R. Load transfer mechanisms in masonry: Friction along a crack within a brick. Mat. Struct. 31, 42–48 (1998). https://doi.org/10.1007/BF02486413
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DOI: https://doi.org/10.1007/BF02486413