{"id":124792,"date":"2025-01-30T12:20:41","date_gmt":"2025-01-30T11:20:41","guid":{"rendered":"https:\/\/www.immo-invest.ch\/?p=124792"},"modified":"2025-01-30T13:14:36","modified_gmt":"2025-01-30T12:14:36","slug":"empa-will-beton-als-kohlenstoffspeicher-nutzen","status":"publish","type":"post","link":"https:\/\/www.immo-invest.ch\/fr\/empa-will-beton-als-kohlenstoffspeicher-nutzen\/","title":{"rendered":"Recherche sur le b\u00e9ton comme r\u00e9servoir de carbone"},"content":{"rendered":"<p class=\"bodytext\">Des chercheurs du Laboratoire f\u00e9d\u00e9ral d&rsquo;essai des mat\u00e9riaux et de recherche<a href=\"https:\/\/www.empa.ch\/\" target=\"_blank\" rel=\"noopener\">(Empa<\/a>), avec le groupe de travail Mining the Atmosphere, veulent \u00e9liminer le dioxyde de carbone exc\u00e9dentaire de l&rsquo;atmosph\u00e8re en grandes quantit\u00e9s. Selon un <a href=\"https:\/\/www.admin.ch\/gov\/de\/start\/dokumentation\/medienmitteilungen.msg-id-103867.html\" target=\"_blank\" rel=\"noopener\">communiqu\u00e9<\/a>, 5 \u00e0 10 milliards de tonnes de carbone pourraient ainsi \u00eatre utilis\u00e9es chaque ann\u00e9e comme granulats pour b\u00e9ton. Cela suffirait \u00e0 stocker durablement le CO2 exc\u00e9dentaire en l&rsquo;espace de 100 ans apr\u00e8s la transition \u00e9nerg\u00e9tique et \u00e0 ramener ainsi l&rsquo;atmosph\u00e8re \u00e0 un niveau compatible avec le climat. On estime qu&rsquo;il s&rsquo;agit de 400 milliards de tonnes de carbone, soit l&rsquo;\u00e9quivalent de 1500 milliards de tonnes de CO2.<\/p>\n<p class=\"bodytext\">Cependant, la mise en \u0153uvre n\u00e9cessite un surplus d&rsquo;\u00e9nergie renouvelable. C&rsquo;est la seule fa\u00e7on de transformer le dioxyde de carbone en m\u00e9thane ou en m\u00e9thanol, puis de le transformer en polym\u00e8res, en hydrog\u00e8ne ou en carbone solide. \u00ab\u00a0Ces calculs sont bas\u00e9s sur l&rsquo;hypoth\u00e8se qu&rsquo;il y aura suffisamment d&rsquo;\u00e9nergie renouvelable disponible apr\u00e8s 2050\u00a0\u00bb, explique Pietro Lura, directeur du d\u00e9partement B\u00e9ton et asphalte de l&rsquo;Empa, cit\u00e9 dans le communiqu\u00e9.<\/p>\n<p class=\"bodytext\">Mais la quantit\u00e9 de mat\u00e9riaux de construction n\u00e9cessaire au niveau mondial d\u00e9passe de loin l&rsquo;exc\u00e9dent de carbone dans l&rsquo;atmosph\u00e8re \u00ab\u00a0M\u00eame si l&rsquo;on dispose de suffisamment d&rsquo;\u00e9nergie renouvelable, la question centrale reste de savoir comment stocker ces \u00e9normes quantit\u00e9s de carbone \u00e0 long terme\u00a0\u00bb, poursuit Lura. Les chercheurs pensent que la production de carbure de silicium, qui peut \u00eatre utilis\u00e9 comme charge dans les mat\u00e9riaux de construction et la production d&rsquo;asphalte, est une solution. Cela permettrait de fixer le carbone \u00e0 long terme et d&rsquo;avoir d&rsquo;excellentes propri\u00e9t\u00e9s m\u00e9caniques. Lura qualifie toutefois la production d&rsquo;extr\u00eamement gourmande en \u00e9nergie. La fabrication n\u00e9cessite encore d&rsquo;importantes recherches sur les mat\u00e9riaux et le traitement pour la rendre \u00e9conomiquement viable.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Des chercheurs du Laboratoire f\u00e9d\u00e9ral d&rsquo;essai des mat\u00e9riaux et de recherche (Empa) pr\u00e9voient de capturer le dioxyde de carbone en exc\u00e8s dans l&rsquo;atmosph\u00e8re et de le stocker dans des mat\u00e9riaux de construction comme le b\u00e9ton. L&rsquo;\u00e9quipe souhaite ainsi r\u00e9duire l&rsquo;exc\u00e8s de CO2.<\/p>\n","protected":false},"author":2,"featured_media":65894,"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":[22699,8747,743,22438],"tags":[32288,4192,51761,1624,4856,51762,41553,848,872,3931,51763,51516,51764],"class_list":["post-124792","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-durabilite","category-energie","category-immonews-fr","category-trends-fr","tag-atmosphaere-fr","tag-baumaterialien-fr","tag-betonzuschlag-fr","tag-co2-fr","tag-energiewende-2-fr","tag-erneuerare-energie-fr","tag-herstellung-fr","tag-immobilien-fr","tag-immoinvest-fr","tag-immonews-fr","tag-kohlendioxid-fr","tag-kohlenstoff-2-fr","tag-materialpruefung-fr"],"acf":{"bild_mit_ki_erstellt_worden":[],"lead":"Des chercheurs du Laboratoire f\u00e9d\u00e9ral d'essai des mat\u00e9riaux et de recherche (Empa) pr\u00e9voient de capturer le dioxyde de carbone en exc\u00e8s dans l'atmosph\u00e8re et de le stocker dans des mat\u00e9riaux de construction comme le b\u00e9ton. L'\u00e9quipe souhaite ainsi r\u00e9duire l'exc\u00e8s de CO2.","autor":"ce\/eb","ort":"D\u00fcbendorf ZH ","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=\"Des chercheurs du Laboratoire f\u00e9d\u00e9ral d&#039;essai des mat\u00e9riaux et de recherche (Empa) pr\u00e9voient de capturer le dioxyde de carbone en exc\u00e8s dans l&#039;atmosph\u00e8re et de le stocker dans des mat\u00e9riaux de construction comme le b\u00e9ton. 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