{"id":2025,"date":"2020-03-16T10:49:33","date_gmt":"2020-03-16T09:49:33","guid":{"rendered":"https:\/\/www.opus-dry.it\/solutions\/eventi-atmosferici\/"},"modified":"2024-03-06T11:46:09","modified_gmt":"2024-03-06T10:46:09","slug":"evenements-atmospheriques","status":"publish","type":"page","link":"https:\/\/www.opus-dry.fr\/solutions\/evenements-atmospheriques\/","title":{"rendered":"\u00c9v\u00e9nements atmosph\u00e9riques"},"content":{"rendered":"

[vc_row row_type=\u00a0\u00bbrow_full_center_content\u00a0\u00bb margin_bottom=\u00a0\u00bb0″ padding_bottom=\u00a0\u00bb0″][vc_column width=\u00a0\u00bb1\/2″ el_class=\u00a0\u00bbrelative\u00a0\u00bb][vc_column_text css=\u00a0\u00bb.vc_custom_1709721769474{margin-bottom: 20px !important;}\u00a0\u00bb]L’humidit\u00e9 des murs due \u00e0 l’absorption d’eau par perm\u00e9ation<\/strong>, \u00e9galement d\u00e9finie comme humidit\u00e9 m\u00e9t\u00e9orique, d\u00e9pend essentiellement de la {tooltip}porosit\u00e9 du mat\u00e9riel{end-text}\"\"{end-tooltip} dont est compos\u00e9 le mur et de la pr\u00e9sence et diffusion d’\u00e9ventuelles discontinuit\u00e9s pr\u00e9sentes sur celui-ci.<\/p>\n

Dans ce cas, les infiltrations proviennent g\u00e9n\u00e9ralement des pr\u00e9cipitations atmosph\u00e9riques : pluie, neige<\/strong> qui p\u00e9n\u00e8trent dans les murs \u00e0 travers des fissures et micro-fissures dans le pl\u00e2tre, des joints de briques d\u00e9t\u00e9rior\u00e9s, des charpenteries m\u00e9talliques et en bois, des cadres de portes et fen\u00eatres encastr\u00e9s dans le mur, etc.<\/p>\n

Les murs fr\u00e9quemment expos\u00e9s \u00e0 la pluie peuvent facilement s’humidifier et se saturer, surtout en pr\u00e9sence de la pression exerc\u00e9e par le vent qui peut faciliter la p\u00e9n\u00e9tration de l’humidit\u00e9 dans les tissus muraux.<\/p>\n

En g\u00e9n\u00e9ral, les effets de la pluie battante sont \u00e9troitement li\u00e9s \u00e0 la morphologie des b\u00e2timents<\/strong> et peuvent \u00eatre accentu\u00e9s en pr\u00e9sence de d\u00e9fauts locaux de l’enveloppe ext\u00e9rieure. Le pl\u00e2tre, en effet, n’a pas seulement la fonction d’assurer une couverture unitaire du b\u00e2timent, mais aussi celle fondamentale, de garantir une protection contre les effets de la pluie battante et des agents m\u00e9t\u00e9orologiques en g\u00e9n\u00e9ral. Dans le cas de mat\u00e9riaux poreux, la fonction protectrice du pl\u00e2tre est fondamentale<\/strong>.<\/p>\n

Pour les murs particuli\u00e8rement expos\u00e9s, il est conseill\u00e9 d’utiliser des enduits hydrofuges et\/ou des dispositifs capables d’inhiber le transport de l’eau. Dans tous les cas, les enduits doivent \u00eatre capables de garantir un \u00e9change de vapeur suffisant entre l’int\u00e9rieur du mur et l’environnement ext\u00e9rieur.<\/strong><\/p>\n

De la p\u00e9n\u00e9tration de l’eau dans le mur d\u00e9pendent \u00e9galement les propri\u00e9t\u00e9s thermiques (isolation), les influences sur les processus de condensation, les dommages caus\u00e9s par les cycles gel-d\u00e9gel, ainsi que la durabilit\u00e9 globale de l’ouvrage lui-m\u00eame<\/strong>. Les ph\u00e9nom\u00e8nes de d\u00e9gradation des corps et des enveloppes murales sont en effet \u00e9troitement li\u00e9s \u00e0 la possibilit\u00e9, pour les substances agressives, de p\u00e9n\u00e9trer dans le mur.[\/vc_column_text][\/vc_column][vc_column width=\u00a0\u00bb1\/2″ css=\u00a0\u00bb.vc_custom_1584653763281{padding-left: 0px !important;}\u00a0\u00bb][vc_single_image image=\u00a0\u00bb1211″ img_size=\u00a0\u00bblarge\u00a0\u00bb onclick=\u00a0\u00bbzoom\u00a0\u00bb css=\u00a0\u00bb.vc_custom_1584873689278{margin-top: 0px !important;margin-right: 0px !important;margin-bottom: 0px !important;margin-left: 0px !important;padding-top: 0px !important;padding-right: 0px !important;padding-bottom: 0px !important;padding-left: 0px !important;}\u00a0\u00bb][\/vc_column][\/vc_row][vc_row row_type=\u00a0\u00bbrow_full_center_content\u00a0\u00bb margin_top=\u00a0\u00bb30px\u00a0\u00bb margin_bottom=\u00a0\u00bb0″ padding_top=\u00a0\u00bb0″ padding_bottom=\u00a0\u00bb0″][vc_column el_class=\u00a0\u00bbrelative\u00a0\u00bb][vc_media_grid element_width=\u00a0\u00bb3″ gap=\u00a0\u00bb15″ item=\u00a0\u00bb289″ grid_id=\u00a0\u00bbvc_gid:1709721665134-7c912f25-2886-1″ include=\u00a0\u00bb542,589,592,586″ el_class=\u00a0\u00bballignBottom\u00a0\u00bb][\/vc_column][\/vc_row][vc_row row_type=\u00a0\u00bbrow_full_center_content\u00a0\u00bb][vc_column][vc_custom_heading text=\u00a0\u00bbProduits et technologies \u00e0 utiliser\u00a0\u00bb font_container=\u00a0\u00bbtag:h2|font_size:24px|text_align:left|color:%233c6422|line_height:30px\u00a0\u00bb use_theme_fonts=\u00a0\u00bbyes\u00a0\u00bb][vc_column_text]<\/p>\n

Les probl\u00e8mes d\u00e9coulant de l’humidit\u00e9 par perm\u00e9ation peuvent \u00eatre r\u00e9solus en scellant les fissures et crevasses existantes<\/strong>, avec des mastics, des produits de remplissage et des scellants polym\u00e8res et en appliquant des traitements et\/ou des peintures<\/strong> (ou enduits) hydrofuges<\/strong> (transparents ou pigment\u00e9s).<\/p>\n

[\/vc_column_text][\/vc_column][\/vc_row][vc_row row_type=\u00a0\u00bbrow_full_center_content\u00a0\u00bb margin_bottom=\u00a0\u00bb0″ padding_top=\u00a0\u00bb0″ padding_bottom=\u00a0\u00bb0″][vc_column][vc_tta_tabs style=\u00a0\u00bbflat\u00a0\u00bb shape=\u00a0\u00bbsquare\u00a0\u00bb color=\u00a0\u00bbpurple\u00a0\u00bb spacing=\u00a0\u00bb10″ gap=\u00a0\u00bb15″ active_section=\u00a0\u00bb1″ no_fill_content_area=\u00a0\u00bbtrue\u00a0\u00bb][vc_tta_section i_position=\u00a0\u00bbright\u00a0\u00bb i_icon_fontawesome=\u00a0\u00bbfas fa-chevron-circle-down\u00a0\u00bb add_icon=\u00a0\u00bbtrue\u00a0\u00bb title=\u00a0\u00bbMastics, enduits et scellants\u00a0\u00bb tab_id=\u00a0\u00bbfiller-stucchi-sigillanti\u00a0\u00bb][vc_raw_html]JTVCcHJvZG90dGklMjBncm91cCUzRCUyMjElMjIlNUQ=[\/vc_raw_html][\/vc_tta_section][vc_tta_section i_position=\u00a0\u00bbright\u00a0\u00bb i_icon_fontawesome=\u00a0\u00bbfas fa-chevron-circle-down\u00a0\u00bb add_icon=\u00a0\u00bbtrue\u00a0\u00bb title=\u00a0\u00bbImpr\u00e9gnants, peintures et\/ou enduits\u00a0\u00bb tab_id=\u00a0\u00bbimpregnanti-pitture-intonachini\u00a0\u00bb][vc_raw_html]JTVCcHJvZG90dGklMjBncm91cCUzRCUyMjIlMjIlNUQ=[\/vc_raw_html][\/vc_tta_section][\/vc_tta_tabs][\/vc_column][\/vc_row]<\/p>\n","protected":false},"excerpt":{"rendered":"

[vc_row row_type=\u00a0\u00bbrow_full_center_content\u00a0\u00bb margin_bottom=\u00a0\u00bb0″ padding_bottom=\u00a0\u00bb0″][vc_column width=\u00a0\u00bb1\/2″ el_class=\u00a0\u00bbrelative\u00a0\u00bb][vc_column_text css=\u00a0\u00bb.vc_custom_1709721769474{margin-bottom: 20px !important;}\u00a0\u00bb]L’humidit\u00e9 des murs due \u00e0 l’absorption d’eau par perm\u00e9ation, \u00e9galement d\u00e9finie comme humidit\u00e9 …<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":2004,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"yoast_head":"\n\u00c9v\u00e9nements atmosph\u00e9riques - OpusDry<\/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.opus-dry.fr\/solutions\/evenements-atmospheriques\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\u00c9v\u00e9nements atmosph\u00e9riques - 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