{"id":23449,"date":"2026-06-22T12:36:58","date_gmt":"2026-06-22T10:36:58","guid":{"rendered":"https:\/\/incoperfil.com\/?post_type=guia-tecnica&#038;p=23449"},"modified":"2026-07-06T10:56:16","modified_gmt":"2026-07-06T08:56:16","slug":"13-types-de-beton-dans-le-plancher-collaborant","status":"publish","type":"guia-tecnica","link":"https:\/\/incoperfil.com\/fr\/guia-tecnica\/13-types-de-beton-dans-le-plancher-collaborant\/","title":{"rendered":"13. Types de b\u00e9ton dans le plancher collaborant"},"content":{"rendered":"<p data-start=\"582\" data-end=\"850\">Les types de b\u00e9ton utilis\u00e9s dans le plancher collaborant influencent directement la capacit\u00e9 structurelle, la rigidit\u00e9 et la durabilit\u00e9 du syst\u00e8me. Leur s\u00e9lection et leur dosage corrects sont d\u00e9terminants pour garantir un comportement optimal de la dalle mixte.<\/p>\n<p data-start=\"852\" data-end=\"1133\">Dans ce syst\u00e8me, le b\u00e9ton adopte la g\u00e9om\u00e9trie des nervures du profil collaborant et forme la couche de compression sup\u00e9rieure. La combinaison de l\u2019acier et du b\u00e9ton permet de cr\u00e9er une dalle mixte efficace, dans laquelle chaque mat\u00e9riau travaille selon ses propri\u00e9t\u00e9s m\u00e9caniques.<\/p>\n<h2 data-start=\"1135\" data-end=\"1176\">B\u00e9ton structurel pour dalles mixtes<\/h2>\n<p data-start=\"1178\" data-end=\"1397\">Dans l\u2019ex\u00e9cution habituelle des planchers collaborants, on utilise des b\u00e9tons structurels fabriqu\u00e9s conform\u00e9ment au Code Structurel, avec des r\u00e9sistances caract\u00e9ristiques de type HA-25 \u00e0 HA-30, selon les exigences du projet.<\/p>\n<p data-start=\"1399\" data-end=\"1580\">Ces classes de b\u00e9ton offrent une r\u00e9sistance ad\u00e9quate \u00e0 la compression, une bonne ouvrabilit\u00e9 et un module d\u2019\u00e9lasticit\u00e9 suffisant pour garantir la collaboration avec le profil nervur\u00e9.<\/p>\n<p data-start=\"1582\" data-end=\"1895\">Le choix d\u00e9finitif de la r\u00e9sistance doit \u00eatre bas\u00e9 sur le calcul structurel et sur les conditions d\u2019exposition environnementale. L\u2019utilisation de r\u00e9sistances inf\u00e9rieures peut limiter la rigidit\u00e9 ou la capacit\u00e9 portante, tandis que des r\u00e9sistances sup\u00e9rieures ne sont justifi\u00e9es que lorsque le dimensionnement l\u2019exige.<\/p>\n<h2 data-start=\"1897\" data-end=\"1927\">Dosage et consistance<\/h2>\n<p data-start=\"1929\" data-end=\"2137\">Pour un b\u00e9tonnage correct sur t\u00f4le collaborante, une consistance fluide est recommand\u00e9e, conform\u00e9ment au Code Structurel, afin de faciliter le remplissage complet des nervures et l\u2019enrobage des armatures.<\/p>\n<p data-start=\"2139\" data-end=\"2160\">\u00c0 titre indicatif:<\/p>\n<ul data-start=\"2162\" data-end=\"2418\">\n<li data-start=\"2162\" data-end=\"2197\">\n<p data-start=\"2164\" data-end=\"2197\">Type de b\u00e9ton : HA-25 ou HA-30<\/p>\n<\/li>\n<li data-start=\"2198\" data-end=\"2247\">\n<p data-start=\"2200\" data-end=\"2247\">Dimension maximale des granulats : environ 20 mm<\/p>\n<\/li>\n<li data-start=\"2248\" data-end=\"2290\">\n<p data-start=\"2250\" data-end=\"2290\">Consistance : fluide (essai d\u2019affaissement au c\u00f4ne)<\/p>\n<\/li>\n<li data-start=\"2291\" data-end=\"2353\">\n<p data-start=\"2293\" data-end=\"2353\">Module d\u2019\u00e9lasticit\u00e9 : conforme \u00e0 la classe de r\u00e9sistance s\u00e9lectionn\u00e9e<\/p>\n<\/li>\n<li data-start=\"2354\" data-end=\"2418\">\n<p data-start=\"2356\" data-end=\"2418\">Rapport eau\/ciment : contr\u00f4l\u00e9 selon le projet et la r\u00e9glementation<\/p>\n<\/li>\n<\/ul>\n<p data-start=\"2420\" data-end=\"2551\">L\u2019utilisation de granulats propres et bien gradu\u00e9s am\u00e9liore la docilit\u00e9 du b\u00e9ton et r\u00e9duit l\u2019apparition de vides sous les nervures du profil.<\/p>\n<h2 data-start=\"2553\" data-end=\"2590\">Durabilit\u00e9 et contr\u00f4le de l\u2019ex\u00e9cution<\/h2>\n<p data-start=\"2592\" data-end=\"2840\">Le b\u00e9ton du plancher collaborant doit pr\u00e9senter une r\u00e9sistance uniforme et une compacit\u00e9 ad\u00e9quate. Un coulage continu est recommand\u00e9, en \u00e9vitant les interruptions prolong\u00e9es, ainsi qu\u2019une compaction superficielle garantissant le remplissage complet des nervures<\/p>\n<p data-start=\"2842\" data-end=\"3007\">L\u2019utilisation d\u2019adjuvants plastifiants peut am\u00e9liorer l\u2019ouvrabilit\u00e9 sans augmenter la teneur en eau, favorisant la r\u00e9sistance finale et r\u00e9duisant le retrait.<\/p>\n<h2 data-start=\"3009\" data-end=\"3047\">Couche de compression et enrobages<\/h2>\n<p data-start=\"3049\" data-end=\"3322\">La couche de compression, situ\u00e9e au-dessus de la t\u00f4le collaborante, pr\u00e9sente une \u00e9paisseur variable selon le profil s\u00e9lectionn\u00e9, les charges et les exigences de r\u00e9sistance au feu. Cette couche reprend les efforts de compression, augmente la rigidit\u00e9 globale et prot\u00e8ge les armatures sup\u00e9rieures<\/p>\n<p data-start=\"3324\" data-end=\"3587\">L\u2019enrobage minimal des armatures doit \u00eatre conforme aux exigences de la norme UNE-EN 1992-1-1, en fonction de l\u2019environnement d\u2019exposition. Un enrobage ad\u00e9quat contribue \u00e0 la durabilit\u00e9 et au maintien de l\u2019adh\u00e9rence entre le b\u00e9ton et le profil collaborant.<\/p>\n<h2 data-start=\"3589\" data-end=\"3602\">Conclusion<\/h2>\n<p data-start=\"3604\" data-end=\"3932\">Le choix du type de b\u00e9ton dans le plancher collaborant doit \u00eatre adapt\u00e9 aux exigences structurelles et environnementales du projet. Un dosage correct, une consistance appropri\u00e9e et un contr\u00f4le ad\u00e9quat de l\u2019ex\u00e9cution garantissent une bonne collaboration entre l\u2019acier et le b\u00e9ton, assurant la r\u00e9sistance, la rigidit\u00e9 et la durabilit\u00e9 de la dalle mixte.<\/p>\n<h2>Manuel technique d\u2019Incoperfil<\/h2>\n<p data-start=\"5385\" data-end=\"5609\">Pour la d\u00e9finition compl\u00e8te du syst\u00e8me, les crit\u00e8res de conception, les bases de calcul, les tableaux de r\u00e9sistance, les d\u00e9tails constructifs et les proc\u00e9dures de mise en \u0153uvre, consultez le Manuel Technique du Plancher Collaborant d\u2019Incoperfil, disponible apr\u00e8s inscription dans la rubrique Documentation du site web.<\/p>\n<hr data-start=\"5611\" data-end=\"5614\" \/>\n<p data-start=\"5616\" data-end=\"5650\">Derni\u00e8re mise \u00e0 jour : f\u00e9vrier 2026<\/p>\n<p data-start=\"5652\" data-end=\"5886\" data-is-last-node=\"\" data-is-only-node=\"\">\u00a9 Incoperfil. Tous droits r\u00e9serv\u00e9s.<br data-start=\"5696\" data-end=\"5699\" \/>Le contenu technique de cet article fait partie du Manuel Technique du Plancher Collaborant et de la documentation enregistr\u00e9e par Incoperfil aupr\u00e8s de ColorURIS (Acte n\u00b0 1-INCOPERFIL-12.2025).<\/p>\n","protected":false},"excerpt":{"rendered":"<p>L\u2019utilisation de b\u00e9tons structurels tels que HA-25 ou HA-30, correctement dos\u00e9s et contr\u00f4l\u00e9s, permet de garantir une collaboration efficace entre l\u2019acier et le b\u00e9ton, assurant rigidit\u00e9, durabilit\u00e9 et un comportement structurel ad\u00e9quat du plancher collaborant.<\/p>\n","protected":false},"author":3,"featured_media":14116,"menu_order":14,"template":"","meta":{"_acf_changed":false},"categories":[1327],"tags":[],"class_list":["post-23449","guia-tecnica","type-guia-tecnica","status-publish","has-post-thumbnail","hentry","category-guides-techniques-pour-plancher-collaborant"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.7 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Types de b\u00e9ton dans le plancher collaborant \u2013 INCOPERFIL<\/title>\n<meta name=\"description\" content=\"D\u00e9couvrez les types de b\u00e9ton utilis\u00e9s dans le plancher collaborant d\u2019IncoPerfil. 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