{"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\/pt\/fibras-de-aco-em-concreto-projetado\/","title":{"rendered":"Fibras de a\u00e7o em concreto projetado"},"content":{"rendered":"
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A vantagem das fibras de a\u00e7o no concreto projetado<\/h2>\t\t\t\t<\/div>\n\t\t\t\t
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As fibras TenaBrix\u00ae para Shotcrete est\u00e3o em conformidade com a ASTM C 1116, Standard Specification for Fiber-Reinforced Shotcrete (Especifica\u00e7\u00e3o padr\u00e3o para concreto projetado refor\u00e7ado com fibra) e s\u00e3o usadas especificamente para controlar e mitigar rachaduras por retra\u00e7\u00e3o pl\u00e1stica, aumentar a durabilidade da superf\u00edcie e a resist\u00eancia ao impacto e \u00e0 abras\u00e3o.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t

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Os produtos TenaBrix\u00ae, incluindo fibras sint\u00e9ticas macro\/micro, fornecem refor\u00e7o tridimensional para aplica\u00e7\u00f5es acima e abaixo do solo.\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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Escopo de aplica\u00e7\u00e3o<\/h2>\t\t\t\t<\/div>\n\t\t\t\t
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Suporte inicial de t\u00faneis, suporte de taludes, t\u00faneis de minas, refor\u00e7o de edif\u00edcios e outros projetos de concreto projetado \u00famido\/seco.<\/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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Quantidade recomendada de fibra de a\u00e7o adicionada<\/h2>\t\t\t\t<\/div>\n\t\t\t\t
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\n Tipo <\/div><\/th>\n
\n Valor de adi\u00e7\u00e3o recomendado <\/div><\/th>\n
\n Recomenda\u00e7\u00f5es de especifica\u00e7\u00e3o de fibra <\/div><\/th>\n <\/tr><\/thead>
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Suporte prim\u00e1rio do t\u00fanel<\/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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Comprimento 30~35mm, Di\u00e2metro 0,5~0,75mm<\/p> <\/div>\n\n <\/td>\n

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Reparo em camada fina (<100 mm)<\/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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Comprimento 25~30mm<\/p> <\/div>\n\n <\/td>\n

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Constru\u00e7\u00e3o de alto impacto<\/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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Comprimento 35~50 mm, tipo de gancho de extremidade<\/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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A dosagem espec\u00edfica deve ser verificada por meio de mistura experimental para atender aos requisitos de resist\u00eancia \u00e0 flex\u00e3o do \"concreto de fibra de a\u00e7o\" (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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Outras fibras recomendadas <\/h2>\t\t\t\t<\/div>\n\t\t\t\t
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\n\t\t\t\t\t\tMacrofibra sint\u00e9tica de polipropileno\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\tFibra fibrilada de polipropileno\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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PERGUNTAS FREQUENTES<\/h2>\t\t\t\t<\/div>\n\t\t\t\t
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Fibras expostas na superf\u00edcie da camada de spray<\/h2>\n <\/div>\n
\n Motivo: \u00e2ngulo de pulveriza\u00e7\u00e3o inadequado ou aplica\u00e7\u00e3o de esp\u00e1tula ap\u00f3s o endurecimento final.
\nSolu\u00e7\u00e3o: ajuste do \u00e2ngulo da pistola; calandragem antes da configura\u00e7\u00e3o inicial <\/div>\n <\/div>\n
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Entupimento frequente de tubula\u00e7\u00f5es<\/h2>\n <\/div>\n
\n Motivo: Aglomera\u00e7\u00e3o de fibras ou propor\u00e7\u00e3o de areia muito baixa.
\nSolu\u00e7\u00e3o: melhorar a dispers\u00e3o da fibra; aumentar a taxa de areia 2%~3% <\/div>\n <\/div>\n
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Rachaduras precoces<\/h2>\n <\/div>\n
\n Motivo: distribui\u00e7\u00e3o irregular da fibra ou manuten\u00e7\u00e3o insuficiente.
\nSolu\u00e7\u00e3o: otimizar o processo de mistura; cobrir e manter dentro de 6 horas ap\u00f3s a pulveriza\u00e7\u00e3o <\/div>\n <\/div>\n
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Flutua\u00e7\u00e3o de intensidade >15%<\/h2>\n <\/div>\n
\n Motivo: desvio na medi\u00e7\u00e3o ou descontrole da propor\u00e7\u00e3o \u00e1gua-cimento.
\nSolu\u00e7\u00e3o: balan\u00e7a de fibra calibrada; controle rigoroso da \u00e1gua <\/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":"

A vantagem das fibras de a\u00e7o no concreto projetado As fibras TenaBrix\u00ae para concreto projetado est\u00e3o em conformidade com a norma ASTM C 1116, Standard Specification for Fiber-Reinforced Shotcrete (Especifica\u00e7\u00e3o padr\u00e3o para concreto projetado refor\u00e7ado com fibra) e s\u00e3o usadas especificamente para controlar e mitigar rachaduras por retra\u00e7\u00e3o pl\u00e1stica, aumentar a durabilidade da superf\u00edcie e a resist\u00eancia ao impacto e \u00e0 abras\u00e3o. Os produtos TenaBrix\u00ae, inclusive as fibras sint\u00e9ticas macro\/micro, fornecem refor\u00e7o tridimensional tanto para a superf\u00edcie quanto para o subsolo<\/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\/pt\/wp-json\/wp\/v2\/posts\/7464","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/tenabrix.com\/pt\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/tenabrix.com\/pt\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/tenabrix.com\/pt\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/tenabrix.com\/pt\/wp-json\/wp\/v2\/comments?post=7464"}],"version-history":[{"count":4,"href":"https:\/\/tenabrix.com\/pt\/wp-json\/wp\/v2\/posts\/7464\/revisions"}],"predecessor-version":[{"id":7469,"href":"https:\/\/tenabrix.com\/pt\/wp-json\/wp\/v2\/posts\/7464\/revisions\/7469"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/tenabrix.com\/pt\/wp-json\/wp\/v2\/media\/7470"}],"wp:attachment":[{"href":"https:\/\/tenabrix.com\/pt\/wp-json\/wp\/v2\/media?parent=7464"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/tenabrix.com\/pt\/wp-json\/wp\/v2\/categories?post=7464"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/tenabrix.com\/pt\/wp-json\/wp\/v2\/tags?post=7464"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}