{"id":5753,"date":"2023-11-01T12:03:50","date_gmt":"2023-11-01T11:03:50","guid":{"rendered":"https:\/\/www.labexpin.com\/portfolio-items\/essai-sur-des-elements-en-bois-au-moyen-dun-sclerometre\/"},"modified":"2025-05-11T14:00:37","modified_gmt":"2025-05-11T12:00:37","slug":"essai-sur-des-elements-en-bois-au-moyen-dun-sclerometre","status":"publish","type":"avada_portfolio","link":"https:\/\/www.labexpin.com\/fr\/portfolio-items\/essai-sur-des-elements-en-bois-au-moyen-dun-sclerometre\/","title":{"rendered":"Essai sur des \u00e9l\u00e9ments en bois au moyen d’un scl\u00e9rom\u00e8tre"},"content":{"rendered":"

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Essai sur des \u00e9l\u00e9ments en bois au moyen d’un scl\u00e9rom\u00e8tre<\/h1><\/div>

Le scl\u00e9rom\u00e8tre \u00e0 bois permet d’estimer les caract\u00e9ristiques m\u00e9caniques des \u00e9l\u00e9ments en bois in situ. Le but de l’essai est de conna\u00eetre l’\u00e9tat de conservation du bois, notamment dans le cas de b\u00e2timents prot\u00e9g\u00e9s o\u00f9 il est presque toujours impossible, pour des raisons de conservation, d’extraire des micro-carottes de l’\u00e9l\u00e9ment (m\u00eame de longueur limit\u00e9e), afin de ne pas compromettre l’int\u00e9grit\u00e9 de la section.
\nL’\u00e9quipement correspond \u00e0 un scl\u00e9rom\u00e8tre modifi\u00e9 auquel on ajoute sur la tige de percussion une pointe constitu\u00e9e d’une aiguille en acier tremp\u00e9 rectifi\u00e9e avec une section transversale circulaire. Cette pointe est enfonc\u00e9e dans le bois au moyen d’un nombre pr\u00e9d\u00e9termin\u00e9 de coups. Il est possible de corr\u00e9ler l’enfoncement de l’aiguille aux caract\u00e9ristiques m\u00e9caniques, \u00e0 la nature du bois et \u00e0 son \u00e9tat de conservation, en se basant sur la corr\u00e9lation entre l’\u00e9nergie d’impact et la p\u00e9n\u00e9tration correspondante. <\/p>\n

Normes techniques de r\u00e9f\u00e9rence: UNI EN 408:2012.<\/p>\n<\/div><\/div><\/div><\/div><\/div>

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