{"id":148540,"date":"2026-02-03T10:28:30","date_gmt":"2026-02-03T09:28:30","guid":{"rendered":"https:\/\/www.immo-invest.ch\/zirkulaer-denken-holz-neu-drucken\/"},"modified":"2026-02-03T10:57:37","modified_gmt":"2026-02-03T09:57:37","slug":"zirkulaer-denken-holz-neu-drucken","status":"publish","type":"post","link":"https:\/\/www.immo-invest.ch\/fr\/zirkulaer-denken-holz-neu-drucken\/","title":{"rendered":"Penser circulairement, r\u00e9imprimer le bois"},"content":{"rendered":"\n\n<p class=\"wp-block-paragraph\">Des directives plus strictes concernant l&rsquo;utilisation \u00e9nerg\u00e9tique du bois usag\u00e9 ont pour cons\u00e9quence que de grandes quantit\u00e9s de d\u00e9chets de bois ne peuvent plus \u00eatre simplement br\u00fbl\u00e9es, mais restent utilisables comme mat\u00e9riau. Le d\u00e9partement \u00ab\u00a0Experimentelles und Digitales Entwerfen und Konstruieren\u00a0\u00bb (conception et construction exp\u00e9rimentales et num\u00e9riques) de l&rsquo;universit\u00e9 de Kassel d\u00e9veloppe, en collaboration avec Buro Happold, un proc\u00e9d\u00e9 d&rsquo;impression 3D qui transforme les particules de bois r\u00e9siduel en \u00e9l\u00e9ments de mur porteurs. Le projet est soutenu dans le cadre du programme \u00ab\u00a0Zukunft Bau\u00a0\u00bb de l&rsquo;Institut f\u00e9d\u00e9ral de recherche sur la construction, les villes et l&rsquo;espace.<\/p>\n\n\n\n\n\n<p class=\"wp-block-paragraph\">l&rsquo;accent est mis sur un mat\u00e9riau d&rsquo;impression biosourc\u00e9 compos\u00e9 de particules de bois usag\u00e9 broy\u00e9es, provenant principalement de flux de mati\u00e8res secondaires de l&rsquo;industrie du bois, c&rsquo;est-\u00e0-dire de bois post-consommation. Des partenaires industriels pr\u00e9parent le mat\u00e9riau et le m\u00e9langent \u00e0 des liants biog\u00e8nes pour obtenir une masse p\u00e2teuse qui peut \u00eatre extrud\u00e9e par des robots.<\/p>\n\n\n\n\n\n<p class=\"wp-block-paragraph\"><strong>composants l\u00e9gers issus de l&rsquo;imprimante 3D<br><\/strong>Le r\u00e9sultat se distingue clairement de l&rsquo;impression 3D en b\u00e9ton connue. La masse de particules de bois et de liant est appliqu\u00e9e par couches \u00e0 l&rsquo;\u00e9chelle 1:1 et forme des \u00e9l\u00e9ments de construction l\u00e9gers mais solides. Des structures murales planes sont possibles, tout comme des g\u00e9om\u00e9tries librement courb\u00e9es, qui peuvent \u00eatre adapt\u00e9es avec pr\u00e9cision sur le plan constructif et architectural.<\/p>\n\n\n\n\n\n<p class=\"wp-block-paragraph\">la phase actuelle du projet Rafa 2.0 s&rsquo;\u00e9tend sur 18 mois et se base sur le projet pr\u00e9c\u00e9dent Rafa, dans le cadre duquel les chercheurs ont \u00e9tudi\u00e9 de mani\u00e8re fondamentale l&rsquo;aptitude des particules de bois usag\u00e9 \u00e0 la fabrication additive. Les formules des mat\u00e9riaux sont maintenant affin\u00e9es, le processus d&rsquo;extrusion optimis\u00e9 et les \u00e9l\u00e9ments de construction test\u00e9s dans des conditions de laboratoire, avec pour objectif un processus de fabrication num\u00e9rique de bout en bout jusqu&rsquo;au prototype \u00e0 l&rsquo;\u00e9chelle r\u00e9elle.<\/p>\n\n\n\n\n\n<p class=\"wp-block-paragraph\"><strong>portant, r\u00e9sistant au feu et circulaire<br><\/strong>Pour que le concept soit viable dans la pratique, les \u00e9l\u00e9ments imprim\u00e9s doivent faire plus que simplement montrer leur forme. Il faut une capacit\u00e9 portante, une rigidit\u00e9 et un comportement au feu qui correspondent aux exigences de l&rsquo;am\u00e9nagement int\u00e9rieur. Les partenaires du projet voient un premier champ d&rsquo;application dans les syst\u00e8mes de cloisons modulaires qui peuvent \u00eatre facilement mont\u00e9s, d\u00e9mont\u00e9s et r\u00e9utilis\u00e9s ailleurs.<\/p>\n\n\n\n\n\n<p class=\"wp-block-paragraph\">ce principe s&rsquo;inscrit dans les approches circulaires de la construction, dans lesquelles les \u00e9l\u00e9ments de construction ne sont pas \u00e9limin\u00e9s \u00e0 la fin de leur cycle de vie, mais transf\u00e9r\u00e9s vers de nouvelles utilisations. Les \u00e9l\u00e9ments de construction peuvent \u00eatre d\u00e9construits sans \u00eatre tri\u00e9s, car on renonce aux composants contenant des substances nocives. Une condition pr\u00e9alable pour des cycles de mat\u00e9riaux ferm\u00e9s dans la construction en bois.<\/p>\n\n\n\n\n\n<p class=\"wp-block-paragraph\"><strong>la planification num\u00e9rique, une technologie cl\u00e9<br><\/strong>La planification num\u00e9rique joue un r\u00f4le central. Buro Happold est responsable de la conception informatique et de la planification de la structure et utilise des simulations pour pr\u00e9voir le comportement structurel des \u00e9l\u00e9ments de construction. Les g\u00e9om\u00e9tries sont optimis\u00e9es de mani\u00e8re \u00e0 ce que le mat\u00e9riau ne soit utilis\u00e9 que l\u00e0 o\u00f9 il est n\u00e9cessaire d&rsquo;un point de vue statique &#8211; l&rsquo;efficacit\u00e9 des ressources devient une t\u00e2che de conception.<\/p>\n\n\n\n\n\n<p class=\"wp-block-paragraph\">\u00ab\u00a0Nous faisons des d\u00e9chets une opportunit\u00e9, le bois r\u00e9cup\u00e9r\u00e9 devient des \u00e9l\u00e9ments de construction performants gr\u00e2ce au design num\u00e9rique et \u00e0 la fabrication additive\u00a0\u00bb, explique Shibo Ren de Buro Happold pour d\u00e9crire l&rsquo;approche. Fini la consommation lin\u00e9aire, place \u00e0 une pratique de construction circulaire, bas\u00e9e sur les donn\u00e9es, qui associe \u00e9troitement la robotique, l&rsquo;ing\u00e9nierie et la conception.<\/p>\n\n\n\n\n\n<p class=\"wp-block-paragraph\"><strong>perspectives pour la pratique<br><\/strong>\u00c0 court terme, le proc\u00e9d\u00e9 vise \u00e0 utiliser moins de mat\u00e9riaux et \u00e0 r\u00e9duire les \u00e9missions par rapport aux technologies d&rsquo;impression 3D bas\u00e9es sur le b\u00e9ton. A long terme, il pourrait ouvrir de nouveaux march\u00e9s pour les constructions additives biosourc\u00e9es. En particulier l\u00e0 o\u00f9 la l\u00e9g\u00e8ret\u00e9, la d\u00e9construction et la libert\u00e9 architecturale sont requises.<\/p>\n\n\n\n\n\n<p class=\"wp-block-paragraph\">la mise \u00e0 l&rsquo;\u00e9chelle, les normes et l&rsquo;acceptation dans la pratique de la construction d\u00e9termineront si l&rsquo;approche s&rsquo;impose \u00e9conomiquement et \u00e0 quelle vitesse. D&rsquo;un point de vue technique, le projet montre d\u00e9j\u00e0 que la construction circulaire ne commence pas seulement par le recyclage, mais aussi par la conception. C&rsquo;est l\u00e0 que les mat\u00e9riaux, les processus et les cycles de vie sont repens\u00e9s.<\/p>\n\n","protected":false},"excerpt":{"rendered":"<p>Ne pas br\u00fbler le bois usag\u00e9, mais lui donner forme. Un projet de recherche de l&rsquo;universit\u00e9 de Kassel et de Buro Happold montre comment les d\u00e9chets de bois sont transform\u00e9s en modules muraux solides par impression 3D et comment la construction circulaire commence d\u00e8s la conception.<\/p>\n","protected":false},"author":2,"featured_media":148541,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_surecart_dashboard_logo_width":"180px","_surecart_dashboard_show_logo":true,"_surecart_dashboard_navigation_orders":true,"_surecart_dashboard_navigation_invoices":true,"_surecart_dashboard_navigation_subscriptions":true,"_surecart_dashboard_navigation_downloads":true,"_surecart_dashboard_navigation_billing":true,"_surecart_dashboard_navigation_account":true,"inline_featured_image":false,"_monsterinsights_skip_tracking":false,"footnotes":""},"categories":[22699,22357,56006,56027,22438],"tags":[3567,43221,57037,53344,872,3931,2002,55414],"class_list":["post-148540","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-durabilite","category-industrie-du-batiment","category-international","category-planification-developpement","category-trends-fr","tag-3d-druck-fr","tag-altholz-fr","tag-biobasierte-baustoffe","tag-digitale-planung-fr","tag-immoinvest-fr","tag-immonews-fr","tag-news-fr","tag-zirkulaeres-bauen-2"],"acf":{"bild_mit_ki_erstellt_worden":["Ja"],"lead":"Ne pas br\u00fbler le bois usag\u00e9, mais lui donner forme. Un projet de recherche de l'universit\u00e9 de Kassel et de Buro Happold montre comment les d\u00e9chets de bois sont transform\u00e9s en modules muraux solides par impression 3D et comment la construction circulaire commence d\u00e8s la conception.","autor":"Quelle EPFL","ort":"","bildunterschrift":"","zusammenfassung":"","bild_im_grid":false,"gallerie":"","newsim":""},"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.3 - aioseo.com -->\n\t<meta name=\"description\" content=\"Ne pas br\u00fbler le bois usag\u00e9, mais lui donner forme. 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