{"id":55649,"date":"2023-05-15T08:00:00","date_gmt":"2023-05-15T06:00:00","guid":{"rendered":"https:\/\/www.immo-invest.ch\/psi-forscht-fuer-co2-armen-zement\/"},"modified":"2023-05-15T08:22:44","modified_gmt":"2023-05-15T06:22:44","slug":"psi-forscht-fuer-co2-armen-zement","status":"publish","type":"post","link":"https:\/\/www.immo-invest.ch\/fr\/psi-forscht-fuer-co2-armen-zement\/","title":{"rendered":"Le PSI fait de la recherche pour un ciment \u00e0 faible \u00e9mission de CO2"},"content":{"rendered":"<p class=\"bodytext\">Une \u00e9quipe de recherche veut mettre en lumi\u00e8re des processus encore inconnus dans l&rsquo;hydratation du ciment. En approfondissant la compr\u00e9hension de ces processus, elle esp\u00e8re ouvrir la voie \u00e0 des ciments \u00e0 faible teneur en carbone. L&rsquo;universit\u00e9 fran\u00e7aise de <a href=\"https:\/\/www.univ-grenoble-alpes.fr\/\" target=\"_blank\" rel=\"noopener\">Grenobles Alpes<\/a>, l&rsquo;European Synchrotron Radiation Facility<a href=\"https:\/\/www.esrf.fr\" target=\"_blank\" rel=\"noopener\">(ESRF<\/a>), \u00e9galement situ\u00e9 \u00e0 Grenoble, et l&rsquo;<a href=\"http:\/\/www.psi.ch\" target=\"_blank\" rel=\"noopener\">Institut Paul Scherrer<\/a> participent \u00e0 l&rsquo;<a href=\"https:\/\/www.nature.com\/articles\/s41467-023-38380-1\" target=\"_blank\" rel=\"noopener\">\u00e9tude<\/a> sous la direction de l&rsquo;<a href=\"https:\/\/www.uma.es\/universite-de-malaga\/cms\/menu\/universitat-malaga\/?set_language=en\" target=\"_blank\" rel=\"noopener\">universit\u00e9 de Malaga<\/a>.<\/p>\n<p class=\"bodytext\">Selon un <a href=\"https:\/\/www.psi.ch\/de\/sls\/csaxs\/scientific-highlights\/a-deep-look-into-hydration-of-cement\" target=\"_blank\" rel=\"noopener\">communiqu\u00e9<\/a> du PSI, le principal inconv\u00e9nient des propositions actuelles de ciments \u00e0 faible teneur en carbone est la lenteur de la cin\u00e9tique d&rsquo;hydratation au cours des trois premiers jours. Cependant, la compr\u00e9hension des processus de fabrication du ciment dans les premi\u00e8res \u00e9tapes est \u00ab\u00a0cruciale\u00a0\u00bb, explique Shiva Shirani, auteur principal de l&rsquo;\u00e9tude et doctorante \u00e0 l&rsquo;universit\u00e9 de Malaga. \u00ab\u00a0C&rsquo;est pourquoi nous avons d\u00e9velopp\u00e9 une m\u00e9thode permettant d&rsquo;obtenir une image compl\u00e8te de l&rsquo;hydratation du ciment Portland\u00a0\u00bb<\/p>\n<p class=\"bodytext\">Pour ce faire, les scientifiques ont combin\u00e9 des approches exp\u00e9rimentales compl\u00e9mentaires \u00e0 l&rsquo;ESRF et \u00e0 la <a href=\"https:\/\/www.psi.ch\/de\/media\/die-synchrotron-lichtquelle-schweiz-sls\" target=\"_blank\" rel=\"noopener\">Source de Lumi\u00e8re Synchrotron Suisse<\/a> du PSI. La ptychotomographie en champ proche a r\u00e9v\u00e9l\u00e9 l&rsquo;hydratation du ciment Portland commercial, selon le communiqu\u00e9.<\/p>\n<p class=\"bodytext\">\u00ab\u00a0La compr\u00e9hension de la m\u00e9canique des processus les plus lents conduira, nous l&rsquo;esp\u00e9rons, \u00e0 des strat\u00e9gies permettant d&rsquo;acc\u00e9l\u00e9rer raisonnablement l&rsquo;hydratation des ciments \u00e0 faible teneur en carbone\u00a0\u00bb, a d\u00e9clar\u00e9 le co-auteur, le professeur Miguel A.G. Aranda. Cela pourrait se faire, par exemple, avec des adjuvants augmentant la r\u00e9sistance, \u00ab\u00a0afin de permettre un retrait pr\u00e9coce du coffrage\u00a0\u00bb.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Une \u00e9quipe de recherche impliquant l&rsquo;Institut Paul Scherrer (PSI) et l&rsquo;Universit\u00e9 Grenoble Alpes se penche sur un inconv\u00e9nient des ciments \u00e0 faible teneur en carbone : la cin\u00e9tique d&rsquo;hydratation lente au cours des trois premiers jours. L&rsquo;objectif est d&rsquo;obtenir une r\u00e9sistance plus rapide des ciments verts.<\/p>\n","protected":false},"author":2,"featured_media":18055,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"pmpro_default_level":"","_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":[22699,743],"tags":[38764,2209,26378,38765,38766,38767,38768,3931,2002,34370,38769],"class_list":["post-55649","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-durabilite","category-immonews-fr","tag-alpes-fr","tag-bauwesen-fr","tag-beteiligung-fr","tag-festigkeit-fr","tag-forschungsteam-fr","tag-hydratationskinetik-fr","tag-immmobilien-fr","tag-immonews-fr","tag-news-fr","tag-tagen-fr","tag-zemente-fr","pmpro-has-access"],"acf":{"bild_mit_ki_erstellt_worden":[],"lead":"Une \u00e9quipe de recherche impliquant l'Institut Paul Scherrer (PSI) et l'Universit\u00e9 Grenoble Alpes se penche sur un inconv\u00e9nient des ciments \u00e0 faible teneur en carbone : la cin\u00e9tique d'hydratation lente au cours des trois premiers jours. L'objectif est d'obtenir une r\u00e9sistance plus rapide des ciments verts.","autor":"ce\/mm","ort":"Villigen AG","bildunterschrift":"","zusammenfassung":"","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=\"Une \u00e9quipe de recherche impliquant l&#039;Institut Paul Scherrer (PSI) et l&#039;Universit\u00e9 Grenoble Alpes se penche sur un inconv\u00e9nient des ciments \u00e0 faible teneur en carbone : la cin\u00e9tique d&#039;hydratation lente au cours des trois premiers jours. 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