{"id":15390,"date":"2024-09-04T09:36:08","date_gmt":"2024-09-04T09:36:08","guid":{"rendered":"https:\/\/ruregold.mediaengine.it\/it\/renforcement-de-poutres-poteaux-et-nuds-poutre-poteau-avec-micro-bton-fibr-hpfrc-microgold-steel\/"},"modified":"2024-09-04T09:36:09","modified_gmt":"2024-09-04T09:36:09","slug":"renforcement-de-poutres-poteaux-et-nuds-poutre-poteau-avec-micro-bton-fibr-hpfrc-microgold-steel","status":"publish","type":"post","link":"https:\/\/ruregold.mediaengine.it\/fr\/renforcement-de-poutres-poteaux-et-nuds-poutre-poteau-avec-micro-bton-fibr-hpfrc-microgold-steel\/","title":{"rendered":"Renforcement de poutres, poteaux et nœuds poutre-poteau avec micro-béton fibré HPFRC MicroGold Steel"},"content":{"rendered":"\t\t
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Micro Gold Steel, micro-béton fibré HPFRC est la solution optimale pour le renforcement de poutres, poteaux et nœuds poutre-poteau.<\/h2>\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<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t
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Les caractéristiques techniques de Micro Gold Steel<\/strong><\/span><\/a>, micro-béton fibré HPFRC<\/a> offrent de nombreux avantages :<\/h5>\n<\/div>\n
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\u00b7 réduction ou élimination des armatures de renforcement ;<\/h5>\n
\u00b7 faible épaisseur d’utilisation (environ 2-5 cm) ;<\/h5>\n
\u00b7 réduction de l’augmentation de poids sur la structure existante.<\/h5>\n<\/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
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Comme on le sait, les poteaux existants en béton armé<\/strong> peuvent présenter des déficiences structurelles<\/strong> vis-à-vis des contraintes suivantes :<\/p>\n

\u00b7  capacité insuffisante en flexion composée ;
\u00b7  capacité insuffisante au cisaillement.<\/p>\n

De ce fait, les exigences<\/strong> auxquelles doivent répondre les poteaux en béton existants sont les suivantes :<\/p>\n

\u00b7  rigidité adéquate de l’élément ;<\/strong>
\u00b7  résistance suffisante de la section ;<\/strong>
\u00b7  ductilité nécessaire de l’élément résistant.<\/strong><\/p>\n

L’utilisation du béton fibré FRC<\/strong><\/a> permet de réaliser un chemisage<\/strong> (ou jacketing<\/strong>) plus fin <\/strong>pour l’épaississement du poteau, en assurant les meilleures performances <\/strong>à l’élément renforcé et en réduisant les armatures.<\/p>\n

La solution prévoit la pose du système FRC, <\/strong>à appliquer comme chemisage\/jacketing<\/strong> de poteaux (même sans armature<\/strong>) composé de micro-béton fibré<\/strong> à hautes performances appliqué en faible épaisseur (de 2<\/strong> à 5<\/strong> cm environ), en fonction de l’augmentation à obtenir.<\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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Renforcement structurel de panneau nœud poutre-poteau<\/strong><\/h3>\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
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Le renforcement<\/strong> des panneaux de nœud poutre-poteau<\/strong> représente une application intéressante pour augmenter la capacité des zones dissipatives des cadres en béton armé<\/strong>.<\/p>\n

Ce type d’intervention peut être particulièrement utile au niveau de la partie de panneau de nœud non confinée, en réalisant un coulage de micro-béton FRC<\/strong><\/div>\n<\/div>\n<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\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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Renforcement en flexion et cisaillement de poutres<\/strong><\/h3>\n<\/div>\n<\/div>\n
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Comme pour les poteaux, même les poutres<\/strong> existantes en béton armé<\/strong> peuvent présenter de graves déficiences structurelles <\/strong>pour lesquelles il est nécessaire <\/strong>d’intervenir avec un renforcement en flexion et cisaillement<\/strong>. Il en est de même lorsque le bâtiment en question fait l’objet d’un changement dans l’utilisation prévue<\/strong> ou d’une intervention d’amélioration sismique<\/strong>.<\/p>\n

Dans ces cas, l’utilisation de renforcements structurels<\/strong> tels que le FRCM<\/strong> et le FRP<\/strong> peut ne pas être suffisante pour atteindre les performances requises par les nouvelles exigences structurelles<\/strong> et il sera nécessaire d’intervenir en augmentant la section de départ<\/strong>.<\/p>\n<\/div>\n<\/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

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L’utilisation de bétons fibrés HPRFC <\/strong>peut remplacer<\/strong> et\/ou compléter<\/strong> les armatures ordinaires <\/strong>en flexion et cisaillement faisant défaut à la <\/strong>section d’origine.
L’utilisation de bétons fibrés HPRFC <\/strong>peut remplacer<\/strong> et\/ou compléter<\/strong> les armatures ordinaires <\/strong>en flexion et cisaillement faisant défaut à la <\/strong>section d’origine.<\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\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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Micro Gold<\/span> Steel<\/span><\/strong><\/a><\/h2>\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>\n\t\t
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Micro Gold Steel<\/span><\/a><\/strong> est un mortier en sac prêt à gâcher fibré <\/strong>avec des fibres métalliques<\/strong>, conçu pour l’amélioration sismique<\/strong> et le renforcement des structures en béton armé<\/strong>,
même sans l’utilisation de composants métalliques supplémentaires.<\/p>\n

Unités de 103,5 kg environ composée de :
\u2022 Partie A n\u00b0 4 sacs de prêt à gâcher sec de 25 kg\/pièce
\u2022 Partie B n\u00b0 1 boîte de fibres d’acier de 3,5 kg.<\/p>\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

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Résistant au feu<\/strong><\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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Résistant aux cycles de gel\/dégel<\/strong><\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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Facile à appliquer<\/strong><\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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Comportement de durcissement par déformation<\/strong><\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\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\tTéléchargez la brochure dédiée aux Renforcements structurels FRC et micro-bétons fibrés !<\/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
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Voulez-vous en savoir plus ? <\/strong><\/h5>\n
Cliquez sur le bouton au bas de la page,<\/strong><\/h5>\n
un technicien expérimenté vous répondra dans les plus brefs délais !<\/strong><\/h5>\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>\n\t\t","protected":false},"excerpt":{"rendered":"

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