{"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&eacute;d&eacute;ral d&rsquo;essai des mat&eacute;riaux et de recherche<a href=\"https:\/\/www.empa.ch\/\" target=\"_blank\" rel=\"noopener\">(Empa<\/a>), avec le groupe de travail Mining the Atmosphere, veulent &eacute;liminer le dioxyde de carbone exc&eacute;dentaire de l&rsquo;atmosph&egrave;re en grandes quantit&eacute;s. Selon un <a href=\"https:\/\/www.admin.ch\/gov\/de\/start\/dokumentation\/medienmitteilungen.msg-id-103867.html\" target=\"_blank\" rel=\"noopener\">communiqu&eacute;<\/a>, 5 &agrave; 10 milliards de tonnes de carbone pourraient ainsi &ecirc;tre utilis&eacute;es chaque ann&eacute;e comme granulats pour b&eacute;ton. Cela suffirait &agrave; stocker durablement le CO2 exc&eacute;dentaire en l&rsquo;espace de 100 ans apr&egrave;s la transition &eacute;nerg&eacute;tique et &agrave; ramener ainsi l&rsquo;atmosph&egrave;re &agrave; un niveau compatible avec le climat. On estime qu&rsquo;il s&rsquo;agit de 400 milliards de tonnes de carbone, soit l&rsquo;&eacute;quivalent de 1500 milliards de tonnes de CO2.<\/p>\n<p class=\"bodytext\">Cependant, la mise en &oelig;uvre n&eacute;cessite un surplus d&rsquo;&eacute;nergie renouvelable. C&rsquo;est la seule fa&ccedil;on de transformer le dioxyde de carbone en m&eacute;thane ou en m&eacute;thanol, puis de le transformer en polym&egrave;res, en hydrog&egrave;ne ou en carbone solide. &laquo;&nbsp;Ces calculs sont bas&eacute;s sur l&rsquo;hypoth&egrave;se qu&rsquo;il y aura suffisamment d&rsquo;&eacute;nergie renouvelable disponible apr&egrave;s 2050&nbsp;&raquo;, explique Pietro Lura, directeur du d&eacute;partement B&eacute;ton et asphalte de l&rsquo;Empa, cit&eacute; dans le communiqu&eacute;.<\/p>\n<p class=\"bodytext\">Mais la quantit&eacute; de mat&eacute;riaux de construction n&eacute;cessaire au niveau mondial d&eacute;passe de loin l&rsquo;exc&eacute;dent de carbone dans l&rsquo;atmosph&egrave;re &laquo;&nbsp;M&ecirc;me si l&rsquo;on dispose de suffisamment d&rsquo;&eacute;nergie renouvelable, la question centrale reste de savoir comment stocker ces &eacute;normes quantit&eacute;s de carbone &agrave; long terme&nbsp;&raquo;, poursuit Lura. Les chercheurs pensent que la production de carbure de silicium, qui peut &ecirc;tre utilis&eacute; comme charge dans les mat&eacute;riaux de construction et la production d&rsquo;asphalte, est une solution. Cela permettrait de fixer le carbone &agrave; long terme et d&rsquo;avoir d&rsquo;excellentes propri&eacute;t&eacute;s m&eacute;caniques. Lura qualifie toutefois la production d&rsquo;extr&ecirc;mement gourmande en &eacute;nergie. La fabrication n&eacute;cessite encore d&rsquo;importantes recherches sur les mat&eacute;riaux et le traitement pour la rendre &eacute;conomiquement 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":{"pmpro_default_level":"","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","pmpro-has-access"],"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":"","bild_im_grid":false,"gallerie":"","newsim":""},"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.1.1 - 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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