{"id":8641,"date":"2016-07-18T15:50:23","date_gmt":"2016-07-18T13:50:23","guid":{"rendered":"https:\/\/tecnaria.com\/pt-pt\/slab-reinforcement-contribution-of-the-interface\/"},"modified":"2018-04-26T10:22:20","modified_gmt":"2018-04-26T08:22:20","slug":"slab-reinforcement-contribution-of-the-interface","status":"publish","type":"post","link":"https:\/\/tecnaria.com\/pt-pt\/slab-reinforcement-contribution-of-the-interface\/","title":{"rendered":"Refor\u00e7o de laje: contribui\u00e7\u00e3o de ades\u00e3o das superf\u00edcies"},"content":{"rendered":"<p><em>Quando n\u00e3o \u00e9 poss\u00edvel verificar o aumento da resist\u00eancia devido \u00e0 rugosidade das duas superficies, o ligador desempenha um papel ainda mais importante.<br \/>\nUm movimento de deslizamento entre os componentes do elemento estrutural reduz a capacidade total de carga e aumenta a deforma\u00e7\u00e3o<\/em><\/p>\n<p><!--more-->Quando duas camadas de bet\u00e3o se unem em momentos diferentes, pode haver uma resist\u00eancia<br \/>\na movimentos de deslizamento naturais, devido \u00e0 irregularidade da superf\u00edcie a ser consolidada.<br \/>\nNo entanto a tens\u00e3o tangencial \u00e9 incapaz de garantir uma liga\u00e7\u00e3o completa. Somente usando um<br \/>\nligador espec\u00edfico, ser\u00e1 poss\u00edvel ter em conta a contribui\u00e7\u00e3o da resist\u00eancia obtida pela coes\u00e3o<br \/>\nentre os materiais . Em termos simples, as superf\u00edcies podem ser classificadas como:<\/p>\n<h2>Rugosidade da superf\u00edcie no refor\u00e7o de laje<\/h2>\n<p style=\"text-align: left;\">A) <strong>Muito lisas:<\/strong> se aplicados em cofragens lisas.<br \/>\nB) <strong>Lisas:<\/strong> caso seja simplesmente vibrado a camada superior. \u00c9 o caso mais frequente<strong>.<\/strong><br \/>\nC) <strong>Rugosa:<\/strong> rugosidade obtida artificialmente atrav\u00e9s de meios mec\u00e2nicos<br \/>\nD) <strong>Dentada:<\/strong> preparada de modo espec\u00edfico e colada com elementos moldados \u201cad hoc\u201d<br \/>\nEm caso de abobadilhas \u00e0 vista ou com uma lajeta muito reduzida, a contribu\u00e7\u00e3o deve ser considerada igual a zero de modo a favorecer a seguran\u00e7a<strong>.<\/strong><\/p>\n<p style=\"text-align: center;\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-8808 size-medium\" src=\"https:\/\/tecnaria.com\/wp-content\/uploads\/2016\/07\/Scabra_POR-300x213.jpg\" alt=\"\" width=\"300\" height=\"213\" srcset=\"https:\/\/tecnaria.com\/wp-content\/uploads\/2016\/07\/Scabra_POR-300x213.jpg 300w, https:\/\/tecnaria.com\/wp-content\/uploads\/2016\/07\/Scabra_POR-510x362.jpg 510w, https:\/\/tecnaria.com\/wp-content\/uploads\/2016\/07\/Scabra_POR-768x545.jpg 768w, https:\/\/tecnaria.com\/wp-content\/uploads\/2016\/07\/Scabra_POR.jpg 1023w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/p>\n<p>Al\u00e9m disso, as propriedades, como a resist\u00eancia e deforma\u00e7\u00e3o da liga\u00e7\u00e3o t\u00eam um impacto na opera\u00e7\u00e3o do elemento misto. Em particular, a ductilidade da liga\u00e7\u00e3o torna-se uma caracter\u00edstica importante, pois, por um lado, possibilita a obten\u00e7\u00e3o da m\u00e1xima estrutura comp\u00f3sita duplicando assim a capacidade de carga antes da rotura por falha na liga\u00e7\u00e3o e por outro lado nos impactos e crit\u00e9rios de dimensionamento, porque a distribui\u00e7\u00e3o da a\u00e7\u00e3o de corte permitida pela liga\u00e7\u00e3o fornece uma distribui\u00e7\u00e3o uniforme dos ligadores ao longo dos elementos estruturais. Essas considera\u00e7\u00f5es demonstram como, no refor\u00e7o da laje, o conhecimento das caracter\u00edsticas de desempenho da liga\u00e7\u00e3o t\u00eam uma fundamental import\u00e2ncia para um dimensionamento correto e para uma avalia\u00e7\u00e3o da confiabilidade da interven\u00e7\u00e3o para a adapta\u00e7\u00e3o est\u00e1tica do pavimento atrav\u00e9s da adi\u00e7\u00e3o de uma laje adicional.<\/p>\n<p>Para facilitar a instala\u00e7\u00e3o, a liga\u00e7\u00e3o normalmente consiste em utiliza\u00e7\u00e3o de parafusos ligadores, cuja ancoragem para os elementos que est\u00e3o sendo ligados pode variar de acordo com o material.<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Quando n\u00e3o \u00e9 poss\u00edvel verificar o aumento da resist\u00eancia devido \u00e0 rugosidade das duas superficies, o ligador desempenha um papel ainda mais importante. Um movimento de deslizamento entre os componentes do elemento estrutural reduz a capacidade total de carga e aumenta a deforma\u00e7\u00e3o<\/p>\n","protected":false},"author":2,"featured_media":8808,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[281],"tags":[],"class_list":["post-8641","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-aprofundamento-betao"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.6 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Refor\u00e7o de laje: contribui\u00e7\u00e3o de ades\u00e3o das superf\u00edcies - Refor\u00e7o e restauro de pavimentos<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/tecnaria.com\/pt-pt\/slab-reinforcement-contribution-of-the-interface\/\" \/>\n<meta property=\"og:locale\" content=\"pt_PT\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Refor\u00e7o de laje: contribui\u00e7\u00e3o de ades\u00e3o das superf\u00edcies - Refor\u00e7o e restauro de pavimentos\" \/>\n<meta property=\"og:description\" content=\"Quando n\u00e3o \u00e9 poss\u00edvel verificar o aumento da resist\u00eancia devido \u00e0 rugosidade das duas superficies, o ligador desempenha um papel ainda mais importante. Um movimento de deslizamento entre os componentes do elemento estrutural reduz a capacidade total de carga e aumenta a deforma\u00e7\u00e3o\" \/>\n<meta property=\"og:url\" content=\"https:\/\/tecnaria.com\/pt-pt\/slab-reinforcement-contribution-of-the-interface\/\" \/>\n<meta property=\"og:site_name\" content=\"Refor\u00e7o e restauro de pavimentos\" \/>\n<meta property=\"article:published_time\" content=\"2016-07-18T13:50:23+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2018-04-26T08:22:20+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/tecnaria.com\/wp-content\/uploads\/2016\/07\/Scabra_POR.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1023\" \/>\n\t<meta property=\"og:image:height\" content=\"726\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Alberto Rosin\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Escrito por\" \/>\n\t<meta name=\"twitter:data1\" content=\"Alberto Rosin\" \/>\n\t<meta name=\"twitter:label2\" content=\"Tempo estimado de leitura\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 minutos\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/tecnaria.com\\\/pt-pt\\\/slab-reinforcement-contribution-of-the-interface\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/tecnaria.com\\\/pt-pt\\\/slab-reinforcement-contribution-of-the-interface\\\/\"},\"author\":{\"name\":\"Alberto Rosin\",\"@id\":\"https:\\\/\\\/tecnaria.com\\\/#\\\/schema\\\/person\\\/a05dc69ec1405e951123d18726bcc2e4\"},\"headline\":\"Refor\u00e7o de laje: contribui\u00e7\u00e3o de ades\u00e3o das superf\u00edcies\",\"datePublished\":\"2016-07-18T13:50:23+00:00\",\"dateModified\":\"2018-04-26T08:22:20+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/tecnaria.com\\\/pt-pt\\\/slab-reinforcement-contribution-of-the-interface\\\/\"},\"wordCount\":409,\"image\":{\"@id\":\"https:\\\/\\\/tecnaria.com\\\/pt-pt\\\/slab-reinforcement-contribution-of-the-interface\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/tecnaria.com\\\/wp-content\\\/uploads\\\/2016\\\/07\\\/Scabra_POR.jpg\",\"articleSection\":[\"Aprofundamento bet\u00e3o\"],\"inLanguage\":\"pt-PT\"},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/tecnaria.com\\\/pt-pt\\\/slab-reinforcement-contribution-of-the-interface\\\/\",\"url\":\"https:\\\/\\\/tecnaria.com\\\/pt-pt\\\/slab-reinforcement-contribution-of-the-interface\\\/\",\"name\":\"Refor\u00e7o de laje: contribui\u00e7\u00e3o de ades\u00e3o das superf\u00edcies - 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