{"id":125590,"date":"2025-02-05T15:00:00","date_gmt":"2025-02-05T14:00:00","guid":{"rendered":"https:\/\/www.immo-invest.ch\/?p=125590"},"modified":"2025-02-05T09:05:00","modified_gmt":"2025-02-05T08:05:00","slug":"innovative-messtechnik-erleichtert-bauwerkskontrolle-bei-stahlbeton","status":"publish","type":"post","link":"https:\/\/www.immo-invest.ch\/fr\/innovative-messtechnik-erleichtert-bauwerkskontrolle-bei-stahlbeton\/","title":{"rendered":"Une technologie de mesure innovante facilite le contr\u00f4le des structures en b\u00e9ton arm\u00e9"},"content":{"rendered":"<p class=\"bodytext\">Des chercheurs de l&rsquo;Ecole polytechnique f\u00e9d\u00e9rale de Zurich<a href=\"https:\/\/ethz.ch\/de.html\" target=\"_blank\" rel=\"noopener\">(EPFZ<\/a>) ont d\u00e9velopp\u00e9 une m\u00e9thode permettant de d\u00e9tecter la corrosion dans l&rsquo;acier d&rsquo;armature des ouvrages en b\u00e9ton arm\u00e9 sans avoir \u00e0 casser le b\u00e9ton. La m\u00e9thode de l&rsquo;ing\u00e9nieur m\u00e9canicien Lukas Bircher et de son \u00e9quipe repose sur des mesures \u00e9lectrochimiques, informe l&rsquo;ETH dans un <a href=\"https:\/\/ethz.ch\/de\/news-und-veranstaltungen\/eth-news\/news\/2025\/01\/neue-methode-entdeckt-korrosion-im-stahlbeton-auch-an-unzugaenglichen-stellen.html\" target=\"_blank\" rel=\"noopener\">communiqu\u00e9<\/a>. Concr\u00e8tement, les chercheurs ont invent\u00e9 une sonde compos\u00e9e de deux joints gonflables avec des \u00e9lectrodes au milieu. Une conduite d&rsquo;eau est int\u00e9gr\u00e9e dans le c\u00e2ble correspondant.<\/p>\n<p class=\"bodytext\">La sonde est introduite dans les tuyaux de drainage, les joints sont gonfl\u00e9s et l&rsquo;eau est ensuite introduite dans la zone \u00e9tanche. Gr\u00e2ce aux trous de la conduite de drainage, l&rsquo;eau \u00e9tablit une connexion entre les \u00e9lectrodes de la sonde et le sol. Cela cr\u00e9e une connexion \u00e9lectrolytiquement conductrice avec l&rsquo;acier dans la structure, formant un point de mesure \u00e9lectrochimique local. \u00ab\u00a0Avec la cellule de mesure, nous enregistrons des signaux \u00e9lectriques qui varient selon que l&rsquo;acier d&rsquo;armature est corrod\u00e9 ou non\u00a0\u00bb, explique Bircher, cit\u00e9 dans le communiqu\u00e9.<\/p>\n<p class=\"bodytext\">Pour l&rsquo;instant, la sonde doit encore \u00eatre pass\u00e9e manuellement au fur et \u00e0 mesure dans les tuyaux de drainage afin de permettre une d\u00e9tection compl\u00e8te de l&rsquo;\u00e9tat de l&rsquo;acier. Dans la prochaine \u00e9tape, l&rsquo;\u00e9quipe souhaite \u00ab\u00a0automatiser davantage la mesure et rendre la sonde d&rsquo;inspection plus robuste\u00a0\u00bb, explique Bircher. Le concept ayant d\u00e9j\u00e0 fait ses preuves, il va cr\u00e9er une start-up appel\u00e9e <a href=\"https:\/\/talpa-inspection.ch\/\" target=\"_blank\" rel=\"noopener\">Talpa-Inspection<\/a> avec l&rsquo;ing\u00e9nieur en mat\u00e9riaux Federico Martinelli-Orlando et l&rsquo;ing\u00e9nieur civil Patrick Pf\u00e4ndler.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Des chercheurs de l&rsquo;\u00c9cole polytechnique f\u00e9d\u00e9rale de Zurich ont mis au point une m\u00e9thode bas\u00e9e sur des mesures \u00e9lectrochimiques pour d\u00e9tecter la corrosion de l&rsquo;acier dans le b\u00e9ton arm\u00e9. L&rsquo;essaimage de Talpa devrait permettre de commercialiser ce concept.<\/p>\n","protected":false},"author":2,"featured_media":125582,"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":[22699,22696,743,22357],"tags":[872,3931,51871,51872,2002,43600],"class_list":["post-125590","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-durabilite","category-entreprise","category-immonews-fr","category-industrie-du-batiment","tag-immoinvest-fr","tag-immonews-fr","tag-korrosionspruefung-fr","tag-messtechnik-fr","tag-news-fr","tag-stahlbeton-fr","pmpro-has-access"],"acf":{"bild_mit_ki_erstellt_worden":[],"lead":"Des chercheurs de l'\u00c9cole polytechnique f\u00e9d\u00e9rale de Zurich ont mis au point une m\u00e9thode bas\u00e9e sur des mesures \u00e9lectrochimiques pour d\u00e9tecter la corrosion de l'acier dans le b\u00e9ton arm\u00e9. L'essaimage de Talpa devrait permettre de commercialiser ce concept.\r\n","autor":"Text: ce\/hs, Bild: Alessandro Della Bella\/ETH Z\u00fcrich","ort":"Z\u00fcrich","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=\"Des chercheurs de l&#039;\u00c9cole polytechnique f\u00e9d\u00e9rale de Zurich ont mis au point une m\u00e9thode bas\u00e9e sur des mesures \u00e9lectrochimiques pour d\u00e9tecter la corrosion de l&#039;acier dans le b\u00e9ton arm\u00e9. 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