{"id":4745,"date":"2025-12-25T20:53:25","date_gmt":"2025-12-25T19:53:25","guid":{"rendered":"https:\/\/avant4degres.fr\/?page_id=4745"},"modified":"2026-08-14T11:34:08","modified_gmt":"2026-08-14T09:34:08","slug":"isolation-acoustique-4","status":"publish","type":"page","link":"https:\/\/avant4degres.fr\/en\/isolation-acoustique-4\/","title":{"rendered":"Isolation acoustique #4"},"content":{"rendered":"
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Isolation acoustique #4<\/h1>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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24 d\u00e9cembre 2025<\/em><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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\"Isolation<\/figure><\/div>
\"Isolation<\/figure><\/div>
\"Isolation<\/figure><\/div>
\"Isolation<\/figure><\/div>\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t
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Suite et fin de la s\u00e9rie sur l\u2019isolation acoustique.<\/p>

La transmission des bruits d\u2019impact n\u2019est pas uniquement directe, elle se fait \u00e9galement par les parois lat\u00e9rales et les passages de r\u00e9seaux et autres d\u00e9fauts d\u2019ex\u00e9cution (transmissions parasites).<\/p>

L\u2019augmentation de la masse dans la dalle ayant ses limites, la solution la plus efficace est de traiter le probl\u00e8me \u00e0 la source et d\u2019agir sur le parcours de l\u2019onde sonore<\/strong>. On peut jouer sur le rev\u00eatement de sol pour r\u00e9duire les bruits de choc. On peut aussi stopper le parcours de l\u2019onde gr\u00e2ce au syst\u00e8me de dalle flottante<\/strong>.<\/p>

On retrouve le syst\u00e8me de la double paroi<\/strong> : la dalle flottante est s\u00e9par\u00e9e de la dalle principale par une sous-couche r\u00e9siliente,<\/strong> c\u2019est-\u00e0-dire capable de retrouver sa forme apr\u00e8s avoir \u00e9t\u00e9 comprim\u00e9e (image 1). Ces sous-couches acoustiques sont g\u00e9n\u00e9ralement des produits p\u00e9trosourc\u00e9s, mais il en existe \u00e9galement \u00e0 base de mat\u00e9riaux biosourc\u00e9s (li\u00e8ge).<\/p>

L\u2019id\u00e9e est de d\u00e9solidariser au maximum les parois verticales et horizontales\u00a0<\/strong>:<\/p>

– \u00e9viter les liaisons rigides avec les murs (image 2a),<\/p>

– \u00e9viter les liaisons rigides avec les plinthes (image 2b),<\/p>

– \u00e9viter de court-circuiter l\u2019isolation par le passage de canalisations (image 3a),<\/p>

– \u00e9viter de court-circuiter l\u2019isolation par des radiateurs (image 3b).<\/p>

Lorsqu\u2019il n\u2019est pas possible d\u2019intervenir par le dessus, l\u2019isolation en sous-face<\/strong> peut \u00eatre une solution, mais elle ne supprimera pas les transmissions lat\u00e9rales. Le plafond suspendu est d\u00e9solidaris\u00e9 de la dalle sup\u00e9rieure \u00e0 l\u2019aide de suspentes anti-vibratiles<\/strong> (image 4).<\/p>

Ainsi se termine cette s\u00e9rie sur l\u2019isolation acoustique o\u00f9 j\u2019ai essay\u00e9 de r\u00e9sumer mes cours d\u2019acoustique du Master \u00c9coconstruction de Cergy, dispens\u00e9s par l\u2019excellent M. Vincent Bouquerel du bureau d\u2019\u00e9tudes en acoustique Acoustics Solutions<\/span><\/a>.<\/p>

Pour compl\u00e9ter vos connaissances, je vous renvoie aux ouvrages de r\u00e9f\u00e9rence de J.-L. Beaumier et F. Janin.<\/p>

\ud83d\udcd6 Beaumier J.-L. (2011) – L\u2019isolation phonique \u00e9cologique<\/em>, \u00c9ditions Terre Vivante, 205 p.<\/p>

\ud83d\udcd6 Janin F., Beaumier J.-L. (2017) – L\u2019isolation thermique-acoustique<\/em>, \u00c9ditions Terre Vivante, 221 p.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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\n\t\t\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\tJe veux am\u00e9liorer l'acoustique dans mon logement<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t<\/div>\n\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\t\t<\/div>\n\t\t\t\t<\/div>","protected":false},"excerpt":{"rendered":"

Isolation acoustique #4 24 d\u00e9cembre 2025 Suite et fin de la s\u00e9rie sur l\u2019isolation acoustique. La transmission des bruits d\u2019impact n\u2019est pas uniquement directe, elle se fait \u00e9galement par les parois lat\u00e9rales et les passages de r\u00e9seaux et autres d\u00e9fauts d\u2019ex\u00e9cution (transmissions parasites). L\u2019augmentation de la masse dans la dalle ayant ses limites, la solution […]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"ocean_front_end_style_editor":"no","ocean_post_layout":"full-width","ocean_both_sidebars_style":"","ocean_both_sidebars_content_width":0,"ocean_both_sidebars_sidebars_width":0,"ocean_sidebar":"","ocean_second_sidebar":"","ocean_disable_margins":"enable","ocean_add_body_class":"","ocean_shortcode_before_top_bar":"","ocean_shortcode_after_top_bar":"","ocean_shortcode_before_header":"","ocean_shortcode_after_header":"","ocean_has_shortcode":"","ocean_shortcode_after_title":"","ocean_shortcode_before_footer_widgets":"","ocean_shortcode_after_footer_widgets":"","ocean_shortcode_before_footer_bottom":"","ocean_shortcode_after_footer_bottom":"","ocean_display_top_bar":"off","ocean_display_header":"default","ocean_header_style":"","ocean_center_header_left_menu":"","ocean_custom_header_template":"","ocean_custom_logo":0,"ocean_custom_retina_logo":0,"ocean_custom_logo_max_width":0,"ocean_custom_logo_tablet_max_width":0,"ocean_custom_logo_mobile_max_width":0,"ocean_custom_logo_max_height":0,"ocean_custom_logo_tablet_max_height":0,"ocean_custom_logo_mobile_max_height":0,"ocean_header_custom_menu":"","ocean_menu_typo_font_family":"","ocean_menu_typo_font_subset":"","ocean_menu_typo_font_size":0,"ocean_menu_typo_font_size_tablet":0,"ocean_menu_typo_font_size_mobile":0,"ocean_menu_typo_font_size_unit":"px","ocean_menu_typo_font_weight":"","ocean_menu_typo_font_weight_tablet":"","ocean_menu_typo_font_weight_mobile":"","ocean_menu_typo_transform":"","ocean_menu_typo_transform_tablet":"","ocean_menu_typo_transform_mobile":"","ocean_menu_typo_line_height":0,"ocean_menu_typo_line_height_tablet":0,"ocean_menu_typo_line_height_mobile":0,"ocean_menu_typo_line_height_unit":"","ocean_menu_typo_spacing":0,"ocean_menu_typo_spacing_tablet":0,"ocean_menu_typo_spacing_mobile":0,"ocean_menu_typo_spacing_unit":"","ocean_menu_link_color":"","ocean_menu_link_color_hover":"","ocean_menu_link_color_active":"","ocean_menu_link_background":"","ocean_menu_link_hover_background":"","ocean_menu_link_active_background":"","ocean_menu_social_links_bg":"","ocean_menu_social_hover_links_bg":"","ocean_menu_social_links_color":"","ocean_menu_social_hover_links_color":"","ocean_disable_title":"on","ocean_disable_heading":"default","ocean_post_title":"","ocean_post_subheading":"","ocean_post_title_style":"","ocean_post_title_background_color":"","ocean_post_title_background":0,"ocean_post_title_bg_image_position":"","ocean_post_title_bg_image_attachment":"","ocean_post_title_bg_image_repeat":"","ocean_post_title_bg_image_size":"","ocean_post_title_height":0,"ocean_post_title_bg_overlay":0.5,"ocean_post_title_bg_overlay_color":"","ocean_disable_breadcrumbs":"default","ocean_breadcrumbs_color":"","ocean_breadcrumbs_separator_color":"","ocean_breadcrumbs_links_color":"","ocean_breadcrumbs_links_hover_color":"","ocean_display_footer_widgets":"off","ocean_display_footer_bottom":"default","ocean_custom_footer_template":"","footnotes":""},"class_list":["post-4745","page","type-page","status-publish","hentry","entry"],"yoast_head":"\nIsolation acoustique #4 - Avant 4 degr\u00e9s<\/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:\/\/avant4degres.fr\/en\/isolation-acoustique-4\/\" \/>\n<meta property=\"og:locale\" content=\"en_GB\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Isolation acoustique #4 - Avant 4 degr\u00e9s\" \/>\n<meta property=\"og:description\" content=\"Isolation acoustique #4 24 d\u00e9cembre 2025 Suite et fin de la s\u00e9rie sur l\u2019isolation acoustique. 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