{"id":823,"date":"2025-06-25T17:04:47","date_gmt":"2025-06-25T17:04:47","guid":{"rendered":"https:\/\/site.ibracon.org.br\/Site_revista\/Concreto_Construcoes\/Concreto_blog\/?p=823"},"modified":"2025-07-31T02:05:20","modified_gmt":"2025-07-31T02:05:20","slug":"impressao-3d","status":"publish","type":"post","link":"https:\/\/site.ibracon.org.br\/Site_revista\/Concreto_Construcoes\/Concreto_blog\/press-releases\/impressao-3d\/","title":{"rendered":"Impress\u00e3o 3D na constru\u00e7\u00e3o civil"},"content":{"rendered":"\n<p>A impress\u00e3o 3D surgiu no final do s\u00e9culo XX para produzir pe\u00e7as de tamanhos reduzidos a partir de modelos digitais. Com seu desenvolvimento, ela foi adotada pela ind\u00fastria automobil\u00edstica, espacial e m\u00e9dica para produ\u00e7\u00e3o de elementos de alta precis\u00e3o.<\/p>\n\n\n\n<p>O processo de impress\u00e3o 3D consiste basicamente de tr\u00eas etapas: cria\u00e7\u00e3o do modelo digital e seu processamento (fatiamento do modelo 3D em camadas 2D), deposi\u00e7\u00e3o do material em camadas (pol\u00edmeros, metais, materiais ciment\u00edcios etc.) e cura do material para atingir as caracter\u00edsticas f\u00edsicas desejadas. Por se basear na adi\u00e7\u00e3o de camada sobre camada para produ\u00e7\u00e3o do produto, esse processo \u00e9 chamado de manufatura aditiva.<\/p>\n\n\n\n<p>Existem diferentes m\u00e9todos para a manufatura aditiva, como o estereografia (deposi\u00e7\u00e3o de material l\u00edquido em camadas que endurecem por meio de feixe de raios ultravioleta), sinteriza\u00e7\u00e3o seletiva a laser (deposi\u00e7\u00e3o de material em p\u00f3, que se funde com o laser direcionado sobre ele), modelagem de deposi\u00e7\u00e3o fundida (filamentos polim\u00e9ricos s\u00e3o sobrepostos para formar o objeto), processo de impress\u00e3o em jato de tinta em p\u00f3 (pulveriza\u00e7\u00e3o de material ligante em um leito de p\u00f3) e constru\u00e7\u00e3o por contorno (p\u00f3rtico de impress\u00e3o desloca bico de impress\u00e3o depositando camada por camada).<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1024\" height=\"577\" src=\"https:\/\/site.ibracon.org.br\/Site_revista\/Concreto_Construcoes\/Concreto_blog\/wp-content\/uploads\/2025\/06\/Ranjah_2018-1024x577.jpg\" alt=\"Esquema da impress\u00e3o 3D de constru\u00e7\u00e3o por contorno\" class=\"wp-image-824\" srcset=\"https:\/\/site.ibracon.org.br\/Site_revista\/Concreto_Construcoes\/Concreto_blog\/wp-content\/uploads\/2025\/06\/Ranjah_2018-1024x577.jpg 1024w, https:\/\/site.ibracon.org.br\/Site_revista\/Concreto_Construcoes\/Concreto_blog\/wp-content\/uploads\/2025\/06\/Ranjah_2018-300x169.jpg 300w, https:\/\/site.ibracon.org.br\/Site_revista\/Concreto_Construcoes\/Concreto_blog\/wp-content\/uploads\/2025\/06\/Ranjah_2018-768x433.jpg 768w, https:\/\/site.ibracon.org.br\/Site_revista\/Concreto_Construcoes\/Concreto_blog\/wp-content\/uploads\/2025\/06\/Ranjah_2018.jpg 1026w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><figcaption class=\"wp-element-caption\">Esquema de impress\u00e3o 3D de constru\u00e7\u00e3o por contorno<\/figcaption><\/figure>\n\n\n\n<p>Ao contr\u00e1rio de outros m\u00e9todos, a constru\u00e7\u00e3o por contorno (CC) \u00e9 executada no local onde ficar\u00e1 o objeto produzido. Nele n\u00e3o h\u00e1 necessidade de f\u00f4rmas ou trabalhadores para a manufatura das paredes de concreto nem das lajes e pisos. Outras vantagens s\u00e3o: liberdade geom\u00e9trica para formas complexas; redu\u00e7\u00e3o de gera\u00e7\u00e3o de res\u00edduos no canteiro de obras; e redu\u00e7\u00e3o do tempo de execu\u00e7\u00e3o.<\/p>\n\n\n\n<p>O sucesso da constru\u00e7\u00e3o por contorno depende de muitas vari\u00e1veis, especialmente as relacionadas com a dosagem da mistura ciment\u00edcia. Esta precisa levar em conta as caracter\u00edsticas de bombeabilidade, extrudabilidade, pega e construbibilidade do concreto fresco. A dosagem da mistura precisa tamb\u00e9m considerar minimizar fissuras no elemento endurecido, garantir a ader\u00eancia entre as camadas de impress\u00e3o e reduzir a quantidade de poros no elemento.<\/p>\n\n\n\n<p>Quanto aos equipamentos de impress\u00e3o, podem ser um sistema em forma de p\u00f3rtico, bra\u00e7os rob\u00f3ticos ou miniconstrutores.<\/p>\n\n\n\n<p>Quer saber mais sobre esses t\u00f3picos relacionados \u00e0 impress\u00e3o 3D de elementos e estruturas de concreto?<\/p>\n\n\n\n<p>Leia o artigo publicado na edi\u00e7\u00e3o 118 da CONCRETO &amp; Constru\u00e7\u00f5es \u201cEvolu\u00e7\u00e3o, m\u00e9todos e materiais na manufatura aditiva aplicada \u00e0 constru\u00e7\u00e3o civil\u201d.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Conhe\u00e7a os conceitos, materiais, processos e equipamentos utilizados na constru\u00e7\u00e3o por contorno<\/p>\n","protected":false},"author":2,"featured_media":825,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[4],"tags":[201,200,202],"class_list":["post-823","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-press-releases","tag-construcao-por-contorno","tag-impressao-3d","tag-manufatura-aditiva"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Impress\u00e3o 3D na constru\u00e7\u00e3o civil - Blog CONCRETO &amp; Constru\u00e7\u00f5es<\/title>\n<meta name=\"description\" content=\"Entenda os conceitos, materiais, processos, equipamentos, vantagens e desafios da impress\u00e3o 3D de elementos de concreto\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link 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