{"id":2597,"date":"2017-01-11T00:00:00","date_gmt":"2017-01-10T22:00:00","guid":{"rendered":"http:\/\/blog.new.bulldozair.com\/du-beton-qui-se-repare-tout-seul"},"modified":"2017-01-11T00:00:00","modified_gmt":"2017-01-10T22:00:00","slug":"du-beton-qui-se-repare-tout-seul","status":"publish","type":"post","link":"https:\/\/blog.bulldozair.com\/fr\/du-beton-qui-se-repare-tout-seul","title":{"rendered":"Du b\u00e9ton qui se r\u00e9pare tout seul"},"content":{"rendered":"<p><span class=\"dropcap\">L<\/span>e b\u00e9ton moderne est un mat\u00e9riau tr\u00e8s r\u00e9sistant. Toutefois, <strong>les b\u00e2timents modernes n&rsquo;ont pas la long\u00e9vit\u00e9 des constructions anciennes<\/strong>. Les constructions comme le Panth\u00e9on \u00e0 Rome sont rest\u00e9es debout pendant des si\u00e8cles gr\u00e2ce \u00e0 un ingr\u00e9dient sp\u00e9cial contenu dans le b\u00e9ton romain : la cendre volcanique. Ces ingr\u00e9dient r\u00e9duit les fissures et crevasses dans le b\u00e9ton, permettant \u00e0 ces constructions anciennes de r\u00e9sister \u00e0 l&rsquo;\u00e9preuve du temps, bien mieux que les b\u00e2timents de nos jours. <\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/blog.bulldozair.com\/wp-content\/uploads\/sites\/2\/2020\/09\/concrete-that-heals-itself5.jpg\" alt=\"\" width=\"800\" height=\"533\" class=\"alignnone size-full wp-image-26277\" \/><\/p>\n<p>N\u00e9anmoins, <strong>le b\u00e9ton actuel est bien plus solide que le b\u00e9ton romain<\/strong>, d&rsquo;o\u00f9 sa popularit\u00e9. Cet avantage nous permet de <a href=\"https:\/\/blog.bulldozair.com\/5-biggest-construction-project-world\">cr\u00e9er des constructions bien plus grandes et difficiles<\/a> mais son inconv\u00e9nient repose sur sa solidit\u00e9. Le b\u00e9ton peut r\u00e9sister \u00e0 des poids incroyables, mais <strong>sa duret\u00e9 le rend vuln\u00e9rable \u00e0 la tension.<\/strong>. Cela est un inconv\u00e9nient majeur du mat\u00e9riau, car le b\u00e9ton peut parfois se contracter ou se dilater selon les conditions ext\u00e9rieures comme le temps. Cette caract\u00e9ristique entra\u00eene des fissures microscopiques dans le b\u00e9ton, qui sont inoffensives au d\u00e9but, mais qui peuvent s&rsquo;accumuler avec le temps et entra\u00eener de s\u00e9rieux probl\u00e8mes \u00e0 la structure des constructions. <\/p>\n<p>Pour r\u00e9soudre cette \u00e9nigme, le microbiologiste N\u00e9erlandais <a href=\"https:\/\/www.epo.org\/learning-events\/european-inventor\/finalists\/2015\/jonkers.html\">Hendrik Jonkers<\/a> a cr\u00e9\u00e9 <strong>un nouveau type de b\u00e9ton qui se r\u00e9g\u00e9n\u00e8re tout seul gr\u00e2ce \u00e0 des bact\u00e9ries<\/strong>. Ce nouveau b\u00e9ton contient des capsules de bact\u00e9ries et de lactate de calcium. Les bact\u00e9ries sont dormantes jusqu&rsquo;\u00e0 ce que les capsules soient activ\u00e9es en \u00e9tant fissur\u00e9es, permettant \u00e0 l&rsquo;air d&rsquo;entrer. Les bact\u00e9ries pourront alors produire du calcaire pour remplir les fissures en quelques semaines, \u00e9vitant ainsi que de l&rsquo;air ou de l&rsquo;eau ne p\u00e9n\u00e8tre dans la structure m\u00e9tallique de l&rsquo;immeuble, augmentant sa dur\u00e9e de vie. <\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/blog.bulldozair.com\/wp-content\/uploads\/sites\/2\/2020\/09\/concrete-that-heals-itself3-1.jpg\" alt=\"\" width=\"800\" height=\"534\" class=\"alignnone size-full wp-image-26274\" \/><\/p>\n<p>Le microbiologiste travaille sur ce projet depuis 2006. Un de ses d\u00e9fis \u00e9tait de trouver la bonne bact\u00e9rie, qui supporterait l&rsquo;environnement dur et alcalin du b\u00e9ton, et il a trouv\u00e9 sa r\u00e9ponse avec deux esp\u00e8ces : Bacillus pseudofirmus et Sporosarcina pasteurii. Maintenant, <strong>sa prochaine \u00e9tape est de rendre ce mat\u00e9riau accessible \u00e0 tout le monde<\/strong>. Actuellement, le b\u00e9ton qui se r\u00e9pare tout seul, ou bio-b\u00e9ton, a un co\u00fbt plus \u00e9lev\u00e9 que le b\u00e9ton standard. Cependant, il travaille sur des alternatives au lactate de calcium, qui est un des ingr\u00e9dients les plus chers de sa formule. Il travaille actuellement sur le remplacement avec du sucre, sans compromettre la duret\u00e9 du b\u00e9ton. <\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/blog.bulldozair.com\/wp-content\/uploads\/sites\/2\/2020\/09\/concrete-that-heals-itself2.jpg\" alt=\"\" width=\"800\" height=\"400\" class=\"alignnone size-full wp-image-26271\" \/><\/p>\n<p>C&rsquo;est un d\u00e9veloppement \u00e9norme pour l&rsquo;industrie de la construction, car les co\u00fbts d&rsquo;entretien sont \u00e9lev\u00e9s, prennent du temps et, si elles ne sont pas d\u00e9tect\u00e9es \u00e0 temps, ces fissures peuvent endommager le b\u00e2timent. Cette nouvelle avanc\u00e9e peut \u00eatre b\u00e9n\u00e9fique dans de nombreux secteurs. Au Royaume-Uni, une autre initiative a \u00e9t\u00e9 lanc\u00e9e et <strong>les scientifiques du gouvernement travaillent actuellement sur un projet similaire afin de d\u00e9velopper des routes qui se r\u00e9parent toutes seules<\/strong>. Comme nous pouvons le voir, les possibilit\u00e9s sont sans fin, et nous pourrons bient\u00f4t construire des structures qui tiendront aussi longtemps que les constructions anciennes.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Le b\u00e9ton moderne est un mat\u00e9riau tr\u00e8s r\u00e9sistant. Toutefois, les b\u00e2timents modernes n&rsquo;ont pas la long\u00e9vit\u00e9 des constructions anciennes. Les constructions comme le Panth\u00e9on \u00e0 Rome sont rest\u00e9es debout pendant des si\u00e8cles gr\u00e2ce \u00e0 un ingr\u00e9dient sp\u00e9cial contenu dans le b\u00e9ton romain : la cendre volcanique. Ces ingr\u00e9dient r\u00e9duit les fissures et crevasses dans le [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":690,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"content-type":"","footnotes":""},"categories":[15],"tags":[],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v21.8 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Du b\u00e9ton qui se r\u00e9pare tout seul - Blog Bulldozair by Mezzoteam<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/blog.bulldozair.com\/fr\/du-beton-qui-se-repare-tout-seul\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Du b\u00e9ton qui se r\u00e9pare tout seul - Blog Bulldozair by Mezzoteam\" \/>\n<meta property=\"og:description\" content=\"Le b\u00e9ton moderne est un mat\u00e9riau tr\u00e8s r\u00e9sistant. Toutefois, les b\u00e2timents modernes n&rsquo;ont pas la long\u00e9vit\u00e9 des constructions anciennes. Les constructions comme le Panth\u00e9on \u00e0 Rome sont rest\u00e9es debout pendant des si\u00e8cles gr\u00e2ce \u00e0 un ingr\u00e9dient sp\u00e9cial contenu dans le b\u00e9ton romain : la cendre volcanique. 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