{"id":27316,"date":"2022-06-23T14:31:14","date_gmt":"2022-06-23T13:31:14","guid":{"rendered":"https:\/\/www.imperalum.com\/materiaux-poreux\/"},"modified":"2022-06-23T14:42:41","modified_gmt":"2022-06-23T13:42:41","slug":"materiaux-poreux","status":"publish","type":"page","link":"https:\/\/www.imperalum.com\/fr\/solutions\/solutions-disolation-acoustique\/materiaux-poreux\/","title":{"rendered":"Mat\u00e9riaux Poreux"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-page\" data-elementor-id=\"27316\" class=\"elementor elementor-27316 elementor-22872\" data-elementor-post-type=\"page\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-277876ed elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"277876ed\" data-element_type=\"section\" data-e-type=\"section\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t\t<div 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href=\"https:\/\/www.imperalum.com\/fr\/\">Home<\/a><\/span><\/span><\/p>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-b8daabb elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"b8daabb\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-33 elementor-top-column elementor-element elementor-element-a50f4cb\" data-id=\"a50f4cb\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-d76278d elementor-widget elementor-widget-heading\" data-id=\"d76278d\" data-element_type=\"widget\" data-e-type=\"widget\" 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menu-item-object-page menu-item-27539\"><a href=\"https:\/\/www.imperalum.com\/fr\/solutions\/solutions-disolation-acoustique\/transmission-laterale\/\" class=\"elementor-item\">Transmission Lat\u00e9rale<\/a><\/li>\n<li class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-27540\"><a href=\"https:\/\/www.imperalum.com\/fr\/solutions\/solutions-disolation-acoustique\/considerations-generales\/\" class=\"elementor-item\">Consid\u00e9rations G\u00e9n\u00e9rales<\/a><\/li>\n<li class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-27541\"><a href=\"https:\/\/www.imperalum.com\/fr\/solutions\/solutions-disolation-acoustique\/solutions-pour-la-correction-acoustique-despaces\/\" class=\"elementor-item\">Solutions pour la correction acoustique d\u2019espaces<\/a><\/li>\n<li class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-27542\"><a href=\"https:\/\/www.imperalum.com\/fr\/solutions\/solutions-disolation-acoustique\/materiaux-poreux\/\" class=\"elementor-item\">Mat\u00e9riaux Poreux<\/a><\/li>\n<li class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-27339\"><a href=\"https:\/\/www.imperalum.com\/fr\/solutions\/solutions-disolation-acoustique\/systemes-resonants\/\" class=\"elementor-item\">Syst\u00e8mes R\u00e9sonants<\/a><\/li>\n<li class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-28293\"><a href=\"https:\/\/www.imperalum.com\/fr\/solutions\/solutions-disolation-acoustique\/solucoes-construtivas-imperalum\/\" class=\"elementor-item\">Solu\u00e7\u00f5es Construtivas Imperalum<\/a><\/li>\n<\/ul>\t\t\t<\/nav>\n\t\t\t\t\t<div class=\"elementor-menu-toggle\" role=\"button\" tabindex=\"0\" aria-label=\"Menu Toggle\" aria-expanded=\"false\">\n\t\t\t<i aria-hidden=\"true\" role=\"presentation\" class=\"elementor-menu-toggle__icon--open eicon-menu-bar\"><\/i><i 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href=\"https:\/\/www.imperalum.com\/fr\/solutions\/solutions-disolation-acoustique\/vitesse-de-propagation-du-son\/\" class=\"elementor-item\" tabindex=\"-1\">Vitesse de Propagation du Son<\/a><\/li>\n<li class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-27333\"><a href=\"https:\/\/www.imperalum.com\/fr\/solutions\/solutions-disolation-acoustique\/longueur-donde\/\" class=\"elementor-item\" tabindex=\"-1\">Longueur d\u2019Onde<\/a><\/li>\n<li class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-27334\"><a href=\"https:\/\/www.imperalum.com\/fr\/solutions\/solutions-disolation-acoustique\/niveau-de-pression-et-de-puissance-acoustique\/\" class=\"elementor-item\" tabindex=\"-1\">Niveau de Pression et de Puissance Acoustique<\/a><\/li>\n<li class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-27335\"><a href=\"https:\/\/www.imperalum.com\/fr\/solutions\/solutions-disolation-acoustique\/niveau-acoustique\/\" class=\"elementor-item\" tabindex=\"-1\">Niveau acoustique<\/a><\/li>\n<li class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-27336\"><a href=\"https:\/\/www.imperalum.com\/fr\/solutions\/solutions-disolation-acoustique\/temps-de-reverberation\/\" class=\"elementor-item\" tabindex=\"-1\">Temps de R\u00e9verb\u00e9ration<\/a><\/li>\n<li class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-27337\"><a href=\"https:\/\/www.imperalum.com\/fr\/solutions\/solutions-disolation-acoustique\/bandes-de-frequence\/\" class=\"elementor-item\" tabindex=\"-1\">Bandes de Fr\u00e9quence<\/a><\/li>\n<li class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-27338\"><a href=\"https:\/\/www.imperalum.com\/fr\/solutions\/solutions-disolation-acoustique\/bruits-aeriens-et-dimpact\/\" class=\"elementor-item\" tabindex=\"-1\">Bruits A\u00e9riens et d\u2019impact<\/a><\/li>\n<li class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-27535\"><a href=\"https:\/\/www.imperalum.com\/fr\/solutions\/solutions-disolation-acoustique\/normes\/\" class=\"elementor-item\" tabindex=\"-1\">Normes<\/a><\/li>\n<li class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-27536\"><a href=\"https:\/\/www.imperalum.com\/fr\/solutions\/solutions-disolation-acoustique\/indice-disolement-aux-bruits-aeriens\/\" class=\"elementor-item\" tabindex=\"-1\">Indice d\u2019Isolement aux bruits a\u00e9riens<\/a><\/li>\n<li class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-27537\"><a href=\"https:\/\/www.imperalum.com\/fr\/solutions\/solutions-disolation-acoustique\/indice-disolement-aux-bruits-dimpact\/\" class=\"elementor-item\" tabindex=\"-1\">Indice d\u2019Isolement aux bruits d\u2019impact<\/a><\/li>\n<li class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-27538\"><a href=\"https:\/\/www.imperalum.com\/fr\/solutions\/solutions-disolation-acoustique\/affaiblissement-acoustique-de-revetements-de-sol-ou-systemes-de-plancher-flottant\/\" class=\"elementor-item\" tabindex=\"-1\">Affaiblissement Acoustique de Rev\u00eatements de Sol ou Syst\u00e8mes de Plancher Flottant<\/a><\/li>\n<li class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-27539\"><a href=\"https:\/\/www.imperalum.com\/fr\/solutions\/solutions-disolation-acoustique\/transmission-laterale\/\" class=\"elementor-item\" tabindex=\"-1\">Transmission Lat\u00e9rale<\/a><\/li>\n<li class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-27540\"><a href=\"https:\/\/www.imperalum.com\/fr\/solutions\/solutions-disolation-acoustique\/considerations-generales\/\" class=\"elementor-item\" tabindex=\"-1\">Consid\u00e9rations G\u00e9n\u00e9rales<\/a><\/li>\n<li class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-27541\"><a href=\"https:\/\/www.imperalum.com\/fr\/solutions\/solutions-disolation-acoustique\/solutions-pour-la-correction-acoustique-despaces\/\" class=\"elementor-item\" tabindex=\"-1\">Solutions pour la correction acoustique d\u2019espaces<\/a><\/li>\n<li class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-27542\"><a href=\"https:\/\/www.imperalum.com\/fr\/solutions\/solutions-disolation-acoustique\/materiaux-poreux\/\" class=\"elementor-item\" tabindex=\"-1\">Mat\u00e9riaux Poreux<\/a><\/li>\n<li class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-27339\"><a href=\"https:\/\/www.imperalum.com\/fr\/solutions\/solutions-disolation-acoustique\/systemes-resonants\/\" class=\"elementor-item\" tabindex=\"-1\">Syst\u00e8mes R\u00e9sonants<\/a><\/li>\n<li class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-28293\"><a href=\"https:\/\/www.imperalum.com\/fr\/solutions\/solutions-disolation-acoustique\/solucoes-construtivas-imperalum\/\" class=\"elementor-item\" tabindex=\"-1\">Solu\u00e7\u00f5es Construtivas Imperalum<\/a><\/li>\n<\/ul>\t\t\t<\/nav>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-66 elementor-top-column elementor-element elementor-element-c9f0490\" data-id=\"c9f0490\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-5443c01 elementor-widget elementor-widget-text-editor\" data-id=\"5443c01\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>On appelle mat\u00e9riaux poreux, les mat\u00e9riaux dont la partie solide qui les constitue occupe seulement une partie de leur volume et l\u2019autre partie est form\u00e9e par de petits intervalles, ouverts vers l\u2019ext\u00e9rieur et qui peuvent (ou non) communiquer entre eux. L\u2019absorption acoustique se fait principalement par dissipation d\u2019\u00e9nergie due au frottement de l\u2019air pendant la propagation au long des pores qui le d\u00e9finissent et aussi par viscosit\u00e9 et frottement interne de la vibration de la structure du mat\u00e9riau.<\/p><p>L\u2019efficacit\u00e9 maximale de fonctionnement de ces syst\u00e8mes est obtenue avec la mise en place du mat\u00e9riel dans la position pour laquelle la vitesse de vibration des particules d\u2019air est plus grande (cf. Illustration suivante), permettant ainsi de r\u00e9duire l\u2019\u00e9nergie cin\u00e9tique de la vibration correspondente.<\/p><p>\u00a0<\/p><p><a href=\"https:\/\/imperalum.com\/cms\/wp-content\/uploads\/2014\/08\/materiais-porosos.gif\"><img fetchpriority=\"high\" decoding=\"async\" class=\"aligncenter wp-image-1746 size-full\" src=\"https:\/\/imperalum.com\/cms\/wp-content\/uploads\/2014\/08\/materiais-porosos.gif\" alt=\"materiais porosos\" width=\"370\" height=\"199\" \/><\/a><\/p><p>La vitesse de vibration des particules est plus grande \u00e0 une distance de \u00bc de la longueur de l\u2019onde, et par cons\u00e9quent, la capacit\u00e9 de dissipation d\u2019\u00e9nergie du mat\u00e9riel.<\/p><p>Les processus de dissipation d\u2019\u00e9nergie qui se produisent dans ce type de mat\u00e9riaux d\u00e9rivent beaucoup de la porosit\u00e9 qu\u2019il pr\u00e9sentent, \u00e9tant, de ce fait, normalement efficaces pour des corrections acoustiques \u00e0 r\u00e9aliser dans le domaine des hautes fr\u00e9quences (fr\u00e9quences sup\u00e9rieures \u00e0 500 \u2013 630 Hz).<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>Conceitos gerais de ac\u00fastica On appelle mat\u00e9riaux poreux, les mat\u00e9riaux dont la partie solide qui les constitue occupe seulement une partie de leur volume et l\u2019autre partie est form\u00e9e par de petits intervalles, ouverts vers l\u2019ext\u00e9rieur et qui peuvent (ou non) communiquer entre eux. L\u2019absorption acoustique se fait principalement par dissipation d\u2019\u00e9nergie due au frottement [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":27559,"menu_order":191,"comment_status":"closed","ping_status":"closed","template":"elementor_header_footer","meta":{"footnotes":""},"class_list":["post-27316","page","type-page","status-publish","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Mat\u00e9riaux Poreux - Imperalum<\/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:\/\/www.imperalum.com\/fr\/solutions\/solutions-disolation-acoustique\/materiaux-poreux\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Mat\u00e9riaux Poreux - Imperalum\" \/>\n<meta property=\"og:description\" content=\"Conceitos gerais de ac\u00fastica On appelle mat\u00e9riaux poreux, les mat\u00e9riaux dont la partie solide qui les constitue occupe seulement une partie de leur volume et l\u2019autre partie est form\u00e9e par de petits intervalles, ouverts vers l\u2019ext\u00e9rieur et qui peuvent (ou non) communiquer entre eux. 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