{"id":34174,"date":"2021-09-10T11:44:53","date_gmt":"2021-09-10T09:44:53","guid":{"rendered":"https:\/\/foretnature.be\/resume-foret-mail\/le-biomimetisme-au-service-dune-plus-grande-utilisation-du-bois\/"},"modified":"2021-09-10T11:44:53","modified_gmt":"2021-09-10T09:44:53","slug":"le-biomimetisme-au-service-dune-plus-grande-utilisation-du-bois","status":"publish","type":"resume-foret-mail","link":"https:\/\/foretnature.be\/en\/resume-foret-mail\/le-biomimetisme-au-service-dune-plus-grande-utilisation-du-bois\/","title":{"rendered":"Le biomim\u00e9tisme au service d\u2019une plus grande utilisation du bois"},"content":{"rendered":"<p>L\u2019arbre, pendant sa croissance,\u00a0d\u00e9veloppe naturellement de nombreux processus pour lutter contre les al\u00e9as auxquels il est soumis. On peut citer sa composition chimique : de la cellulose pour assurer sa r\u00e9sistance \u00e0 la traction, de la lignine pour rendre les parois de ses cellules r\u00e9sistantes \u00e0 la compression ou encore des extractibles (mol\u00e9cules impr\u00e9gnant le bois comme le tanin) qui lui conf\u00e8re une r\u00e9sistance aux champignons et aux insectes.<br \/>\nLe Laboratoire f\u00e9d\u00e9ral d\u2019essai des mat\u00e9riaux et de recherche (EMPA), en Suisse, a choisi d\u2019imiter les m\u00e9canismes de formation du bois. \u00ab L\u2019id\u00e9e de base de tous nos travaux, c\u2019est de conserver la structure hi\u00e9rarchique du bois, mais d\u2019en compenser certaines faiblesses ou de g\u00e9n\u00e9rer certaines fonctionnalit\u00e9s. \u00bb<br \/>\nLe labo a plusieurs projets sur le feu : augmenter l\u2019hydrophobie des parois cellulaires du bois afin de le rendre plus stable (moins de retraits ou de gonflements), notamment lorsqu\u2019il est soumis \u00e0 des changements du taux d\u2019humidit\u00e9 importants ; diminuer la combustibilit\u00e9 du bois pour permettre une application encore plus large du bois dans la construction ; traiter le bois pour le rendre plus r\u00e9sistant aux rayons UV. \u00ab On pourrait cr\u00e9er un filtre \u00e0 partir de bois, on est \u00e9galement en mesure de rendre le bois magn\u00e9tisable \u00bb, ajoute le directeur du groupe de recherches, I. Burgert.<br \/>\nToutes ces innovations seront install\u00e9es grandeur nature dans des unit\u00e9s d\u2019habitation du NEST (immeuble d\u00e9di\u00e9) afin d\u2019\u00eatre test\u00e9es dans des conditions d\u2019utilisations quotidiennes. Un lavabo et une paroi de douche en bois, une porte avec une couche de chaux appliqu\u00e9e entre les couches de placages pour la rendre plus r\u00e9sistante au feu ou encore des poign\u00e9es en bois supprimant les germes gr\u00e2ce \u00e0 l\u2019effet d\u00e9sinfectant de l\u2019iode incorpor\u00e9.<br \/>\nA. von Ascheraden (2017). Optimiser en s\u2019inspirant de l\u2019arbre vivant. La\u00a0For\u00eat 1\/2017 : 17-19 (photo :\u00a0Vovan-Fotolia).<\/p>","protected":false},"excerpt":{"rendered":"<p>L\u2019arbre, pendant sa croissance,\u00a0d\u00e9veloppe naturellement de nombreux processus pour lutter contre les al\u00e9as auxquels il est soumis. On peut citer sa composition chimique : de la cellulose pour assurer sa r\u00e9sistance \u00e0 la traction, de la lignine pour rendre les parois de ses cellules r\u00e9sistantes \u00e0 la compression ou encore des extractibles (mol\u00e9cules impr\u00e9gnant le [&hellip;]<\/p>","protected":false},"featured_media":0,"template":"","categories":[50],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v23.2 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Le biomim\u00e9tisme au service d\u2019une plus grande utilisation du bois - For\u00eat.Nature<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/foretnature.be\/en\/resume-foret-mail\/le-biomimetisme-au-service-dune-plus-grande-utilisation-du-bois\/\" \/>\n<meta property=\"og:locale\" content=\"en_GB\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Le biomim\u00e9tisme au service d\u2019une plus grande utilisation du bois - For\u00eat.Nature\" \/>\n<meta property=\"og:description\" content=\"L\u2019arbre, pendant sa croissance,\u00a0d\u00e9veloppe naturellement de nombreux processus pour lutter contre les al\u00e9as auxquels il est soumis. 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