{"id":7464,"date":"2025-08-16T02:30:11","date_gmt":"2025-08-16T02:30:11","guid":{"rendered":"https:\/\/tenabrix.com\/?p=7464"},"modified":"2025-08-16T02:36:14","modified_gmt":"2025-08-16T02:36:14","slug":"steel-fibers-in-shotcrete","status":"publish","type":"post","link":"https:\/\/tenabrix.com\/fr\/fibres-dacier-dans-le-beton-projete\/","title":{"rendered":"Fibres d'acier dans le b\u00e9ton projet\u00e9"},"content":{"rendered":"
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L'avantage des fibres d'acier dans le b\u00e9ton projet\u00e9<\/h2>\t\t\t\t<\/div>\n\t\t\t\t
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Les fibres TenaBrix\u00ae pour le b\u00e9ton projet\u00e9 conforme \u00e0 la norme ASTM C 1116, Standard Specification for Fiber-Reinforced Shotcrete, sont sp\u00e9cifiquement utilis\u00e9es pour contr\u00f4ler et att\u00e9nuer la fissuration par retrait plastique, augmenter la durabilit\u00e9 de la surface, la r\u00e9sistance \u00e0 l'impact et \u00e0 l'abrasion.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t

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Les produits TenaBrix\u00ae, y compris les fibres synth\u00e9tiques macro\/micro, fournissent un renforcement tridimensionnel pour les applications en surface et souterraines.\u00a0<\/p>\t\t\t\t\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

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Champ d'application<\/h2>\t\t\t\t<\/div>\n\t\t\t\t
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Soutien initial des tunnels, soutien des pentes, tunnel de mine, renforcement des b\u00e2timents et autres projets de b\u00e9ton par pulv\u00e9risation humide\/s\u00e8che.<\/p>\t\t\t\t\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

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Quantit\u00e9 recommand\u00e9e de fibres d'acier ajout\u00e9es<\/h2>\t\t\t\t<\/div>\n\t\t\t\t
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\n Type <\/div><\/th>\n
\n Montant suppl\u00e9mentaire recommand\u00e9 <\/div><\/th>\n
\n Recommandations relatives aux sp\u00e9cifications des fibres <\/div><\/th>\n <\/tr><\/thead>
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Support primaire du tunnel<\/p> <\/div>\n\n <\/td>\n

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25~40 kg\/m\u00b3<\/p> <\/div>\n\n <\/td>\n

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Longueur 30~35mm, Diam\u00e8tre 0.5~0.75mm<\/p> <\/div>\n\n <\/td>\n

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R\u00e9paration en couche mince (<100mm)<\/p> <\/div>\n\n <\/td>\n

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35-45 kg\/m\u00b3<\/p> <\/div>\n\n <\/td>\n

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Longueur 25~30mm<\/p> <\/div>\n\n <\/td>\n

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Construction \u00e0 fort impact<\/p> <\/div>\n\n <\/td>\n

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40-60 kg\/m\u00b3<\/p> <\/div>\n\n <\/td>\n

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Longueur 35~50mm, Type de crochet d'extr\u00e9mit\u00e9<\/p> <\/div>\n\n <\/td>\n <\/tbody><\/table> <\/div>\n\n\n\n <\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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Le dosage sp\u00e9cifique doit \u00eatre v\u00e9rifi\u00e9 par un m\u00e9lange d'essai pour r\u00e9pondre aux exigences de r\u00e9sistance \u00e0 la flexion du \"b\u00e9ton de fibres d'acier\" (JG\/T 472).<\/h4>\t\t\t\t\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\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t
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Autres fibres recommand\u00e9es <\/h2>\t\t\t\t<\/div>\n\t\t\t\t
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\n\t\t\t\t\t\tMacrofibre synth\u00e9tique en polypropyl\u00e8ne\t\t\t\t\t<\/h3>\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/a>\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
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\n\t\t\t\t\t\tFibre de polypropyl\u00e8ne fibr\u00e9e\t\t\t\t\t<\/h3>\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/a>\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
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FAQ<\/h2>\t\t\t\t<\/div>\n\t\t\t\t
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Fibres expos\u00e9es \u00e0 la surface de la couche de pulv\u00e9risation<\/h2>\n <\/div>\n
\n Raison:Angle de pulv\u00e9risation incorrect ou truellage apr\u00e8s la prise finale.
\nSolution:R\u00e9glage de l'angle du pistolet ; calandrage avant le r\u00e9glage initial <\/div>\n <\/div>\n
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Colmatage fr\u00e9quent des canalisations<\/h2>\n <\/div>\n
\n Raison:Agglutination de fibres ou rapport de sable trop faible.
\nSolution:Am\u00e9liorer la dispersion des fibres ; augmenter le taux de sable 2%~3% <\/div>\n <\/div>\n
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Fissuration pr\u00e9coce<\/h2>\n <\/div>\n
\n Raison:Distribution in\u00e9gale de la fibre ou entretien insuffisant.
\nSolution:Optimiser le processus de m\u00e9lange ; couvrir et entretenir dans les 6 heures suivant la pulv\u00e9risation. <\/div>\n <\/div>\n
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Fluctuation de l'intensit\u00e9 >15%<\/h2>\n <\/div>\n
\n Raison:D\u00e9viation du dosage ou rapport eau-ciment non contr\u00f4l\u00e9.
\nSolution:Balance \u00e0 fibres calibr\u00e9e ; contr\u00f4le strict de l'eau <\/div>\n <\/div>\n \n <\/div>\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>","protected":false},"excerpt":{"rendered":"

L'avantage des fibres d'acier dans le b\u00e9ton projet\u00e9 Les fibres TenaBrix\u00ae pour le b\u00e9ton projet\u00e9 sont conformes \u00e0 la norme ASTM C 1116, Standard Specification for Fiber-Reinforced Shotcrete, et sont sp\u00e9cifiquement utilis\u00e9es pour contr\u00f4ler et att\u00e9nuer la fissuration par retrait plastique, augmenter la durabilit\u00e9 de la surface, la r\u00e9sistance \u00e0 l'impact et \u00e0 l'abrasion. Les produits TenaBrix\u00ae, y compris les fibres synth\u00e9tiques macro\/micro, fournissent un renforcement tridimensionnel \u00e0 la fois en surface et sous terre [...]<\/p>","protected":false},"author":3,"featured_media":7470,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"rank_math_lock_modified_date":false,"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[7],"tags":[],"class_list":["post-7464","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-post"],"_links":{"self":[{"href":"https:\/\/tenabrix.com\/fr\/wp-json\/wp\/v2\/posts\/7464","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/tenabrix.com\/fr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/tenabrix.com\/fr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/tenabrix.com\/fr\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/tenabrix.com\/fr\/wp-json\/wp\/v2\/comments?post=7464"}],"version-history":[{"count":4,"href":"https:\/\/tenabrix.com\/fr\/wp-json\/wp\/v2\/posts\/7464\/revisions"}],"predecessor-version":[{"id":7469,"href":"https:\/\/tenabrix.com\/fr\/wp-json\/wp\/v2\/posts\/7464\/revisions\/7469"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/tenabrix.com\/fr\/wp-json\/wp\/v2\/media\/7470"}],"wp:attachment":[{"href":"https:\/\/tenabrix.com\/fr\/wp-json\/wp\/v2\/media?parent=7464"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/tenabrix.com\/fr\/wp-json\/wp\/v2\/categories?post=7464"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/tenabrix.com\/fr\/wp-json\/wp\/v2\/tags?post=7464"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}