{"id":7196,"date":"2025-06-09T06:06:45","date_gmt":"2025-06-09T06:06:45","guid":{"rendered":"https:\/\/tenabrix.com\/?page_id=7196"},"modified":"2025-08-20T09:24:51","modified_gmt":"2025-08-20T09:24:51","slug":"pp-fiber-for-shotcrete","status":"publish","type":"page","link":"https:\/\/tenabrix.com\/pt\/solucoes-de-projeto\/fibra-pp-para-concreto-projetado\/","title":{"rendered":"Concreto projetado"},"content":{"rendered":"
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Fibras de PP para concreto projetado<\/h1>\t\t\t\t<\/div>\n\t\t\t\t
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  1. \r\n \r\n \r\n \r\n \r\n In\u00edcio <\/a>\r\n <\/span>\r\n \r\n <\/li>
  2. \/<\/span><\/li>
  3. Concreto projetado<\/span><\/li>\t\t\t\t\t<\/ol>\r\n\t\t\t\t\t
    <\/div>\r\n\t\t\t\t<\/div>\r\n\t\t\t<\/div>\r\n\t\t\t<\/div>\n\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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    A vantagem das fibras de PP 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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    No concreto projetado, a fibra de PP pode inibir com efic\u00e1cia as rachaduras de retra\u00e7\u00e3o pl\u00e1stica e melhorar a integridade estrutural, especialmente para revestimento de t\u00faneis, suporte de taludes e outros projetos.<\/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 polipropileno adicionada<\/h2>\t\t\t\t<\/div>\n\t\t\t\t
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    \n Tipo de projeto <\/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 convencional<\/p> <\/div>\n\n <\/td>\n

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    0,9~1,2 kg\/m\u00b3<\/p> <\/div>\n\n <\/td>\n

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    12-19 mm<\/p> <\/div>\n\n <\/td>\n

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    Altos requisitos contra rachaduras<\/p> <\/div>\n\n <\/td>\n

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    1,5~2,0 kg\/m\u00b3<\/p> <\/div>\n\n <\/td>\n

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    19~25mm<\/p> <\/div>\n\n <\/td>\n

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    Concreto \u00e0 prova de fogo<\/p> <\/div>\n\n <\/td>\n

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    2,0~2,5 kg\/m\u00b3<\/p> <\/div>\n\n <\/td>\n

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    25~40mm<\/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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    Observa\u00e7\u00e3o: A dosagem deve ser verificada por meio de mistura experimental e n\u00e3o deve ser substitu\u00edda por refor\u00e7o estrutural!<\/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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    Fibra de polipropileno recomendada<\/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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    \n\t\t\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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    PERGUNTAS FREQUENTES<\/h2>\t\t\t\t<\/div>\n\t\t\t\t
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    Como resolver o problema da alta resili\u00eancia das fibras?<\/h2>\n <\/div>\n
    \n Verifique a press\u00e3o do vento: uma press\u00e3o do vento muito alta leva ao rebote, ajuste para menos de 0,5 MPa.
    \n\nOtimize a propor\u00e7\u00e3o: adicione p\u00f3 de micross\u00edlica (3~5%) ou \u00e9ter de celulose para melhorar a liga\u00e7\u00e3o. <\/div>\n <\/div>\n
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    O que acontece com as fibras expostas na superf\u00edcie da camada de spray?<\/h2>\n <\/div>\n
    \n Ajuste o \u00e2ngulo de pulveriza\u00e7\u00e3o para a superf\u00edcie vertical pulverizada e pressione levemente a superf\u00edcie com uma esp\u00e1tula de a\u00e7o antes da pulveriza\u00e7\u00e3o final.
    \n\nSe a quantidade de mistura for >2,0kg\/m\u00b3, \u00e9 necess\u00e1rio aumentar a camada de prote\u00e7\u00e3o da argamassa (\u226510mm). <\/div>\n <\/div>\n
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    O que posso fazer para evitar que as fibras causem obstru\u00e7\u00e3o das trompas?<\/h2>\n <\/div>\n
    \n Preven\u00e7\u00e3o: Use fibras com uma rela\u00e7\u00e3o L\/D de \u2264 100 (por exemplo, comprimento de 19 mm \/ di\u00e2metro de 0,03 mm).
    \n\nEmerg\u00eancia: interrompa a pulveriza\u00e7\u00e3o imediatamente, limpe o tubo com vento de alta press\u00e3o e pro\u00edba estritamente a inje\u00e7\u00e3o de \u00e1gua! <\/div>\n <\/div>\n
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    O efeito antirrachaduras n\u00e3o \u00e9 \u00f3bvio?<\/h2>\n <\/div>\n
    \n Verifique a dispers\u00e3o da fibra: pegue o bloco de concreto endurecido e esmague-o, observando se a distribui\u00e7\u00e3o da fibra \u00e9 uniforme.
    \n\nVerifique a precis\u00e3o da quantidade de mistura: o erro de cada quadrado de concreto deve ser <\u00b10,1 kg. <\/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":"

    Fibras de a\u00e7o no concreto projetado 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 fibras) 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, incluindo fibras sint\u00e9ticas macro\/micro, fornecem refor\u00e7o tridimensional tanto para [...]<\/p>","protected":false},"author":3,"featured_media":0,"parent":1921,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"elementor_header_footer","meta":{"rank_math_lock_modified_date":false,"site-sidebar-layout":"no-sidebar","site-content-layout":"page-builder","ast-site-content-layout":"","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":"disabled","ast-breadcrumbs-content":"","ast-featured-img":"disabled","footer-sml-layout":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","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":""},"class_list":["post-7196","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/tenabrix.com\/pt\/wp-json\/wp\/v2\/pages\/7196","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/tenabrix.com\/pt\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/tenabrix.com\/pt\/wp-json\/wp\/v2\/types\/page"}],"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=7196"}],"version-history":[{"count":23,"href":"https:\/\/tenabrix.com\/pt\/wp-json\/wp\/v2\/pages\/7196\/revisions"}],"predecessor-version":[{"id":7603,"href":"https:\/\/tenabrix.com\/pt\/wp-json\/wp\/v2\/pages\/7196\/revisions\/7603"}],"up":[{"embeddable":true,"href":"https:\/\/tenabrix.com\/pt\/wp-json\/wp\/v2\/pages\/1921"}],"wp:attachment":[{"href":"https:\/\/tenabrix.com\/pt\/wp-json\/wp\/v2\/media?parent=7196"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}