{"id":5588,"date":"2023-10-27T18:03:17","date_gmt":"2023-10-27T16:03:17","guid":{"rendered":"https:\/\/www.labexpin.com\/portfolio-items\/essai-de-pull-off\/"},"modified":"2025-05-11T13:41:47","modified_gmt":"2025-05-11T11:41:47","slug":"essai-de-pull-off","status":"publish","type":"avada_portfolio","link":"https:\/\/www.labexpin.com\/fr\/portfolio-items\/essai-de-pull-off\/","title":{"rendered":"Essai de pull-off"},"content":{"rendered":"

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Essai de pull-off<\/h1><\/div>

L’essai de pull-off est une technique d’investigation semi-destructive qui permet de mesurer la r\u00e9sistance \u00e0 la traction ou \u00e0 la rupture d’un mat\u00e9riau appliqu\u00e9 sur un substrat, comme par exemple les rev\u00eatements muraux (mortier de finition, pl\u00e2tre ou autre). Cet essai est r\u00e9alis\u00e9 en pratiquant une incision circulaire de 50 mm de diam\u00e8tre \u00e0 la surface du mat\u00e9riau \u00e0 examiner, sur une profondeur au moins \u00e9gale \u00e0 l’\u00e9paisseur du rev\u00eatement, \u00e0 l’aide d’un carottier sp\u00e9cifique (ou d’une scie cloche pour perceuse), de mani\u00e8re \u00e0 isoler la zone \u00e0 \u00e9tudier. On proc\u00e8de ensuite en collant un disque m\u00e9tallique sur la surface, auquel on applique, perpendiculairement, une force de traction \u00e0 l’aide d’un v\u00e9rin \u00e9quip\u00e9 d’un manom\u00e8tre calibr\u00e9, jusqu’\u00e0 ce qu’une rupture se produise dans le plan de contact entre le rev\u00eatement et le support. <\/p>\n

L’essai de pull-off est utile pour d\u00e9terminer la r\u00e9sistance \u00e0 la traction et \u00e0 la rupture du pl\u00e2tre, du mortier ou d’autres types de rev\u00eatements muraux en ma\u00e7onnerie ou en b\u00e9ton. Normes techniques de r\u00e9f\u00e9rence: ASTM D7234-12, ASTM D4541-17, ASTM C1583-04; UNI EN ISO 16276-1:2007; UNI EN 1015-12:2016; UNI EN 1542:2000; UNI EN 12636:2001; CNR-DT 200 R1\/2013; CNR-DT 215\/2018.<\/p>\n<\/div><\/div><\/div><\/div><\/div>

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