{"id":14086,"date":"2026-03-04T08:00:17","date_gmt":"2026-03-04T08:00:17","guid":{"rendered":"https:\/\/tenessy.com\/?p=14086"},"modified":"2026-03-04T08:00:18","modified_gmt":"2026-03-04T08:00:18","slug":"polycarboxylate-superplasticizer-for-ultra-high-performance-concrete-uhpc","status":"publish","type":"post","link":"https:\/\/tenessy.com\/pt\/superplastificante-de-policarboxilato-para-concreto-de-ultra-alto-desempenho-uhpc\/","title":{"rendered":"Superplastificante de policarboxilato para concreto de ultra alto desempenho (UHPC)"},"content":{"rendered":"<div data-elementor-type=\"wp-post\" data-elementor-id=\"14086\" class=\"elementor elementor-14086\" data-elementor-post-type=\"post\">\n\t\t\t\t<div class=\"elementor-element elementor-element-fdbc6e4 e-flex e-con-boxed e-con e-parent\" data-id=\"fdbc6e4\" data-element_type=\"container\" data-settings=\"{&quot;ekit_has_onepagescroll_dot&quot;:&quot;yes&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-20af60d elementor-widget elementor-widget-image\" data-id=\"20af60d\" data-element_type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"600\" height=\"390\" src=\"https:\/\/tenessy.com\/wp-content\/uploads\/2026\/03\/Ultra-High-Performance-Concrete.png\" class=\"attachment-large size-large wp-image-14093\" alt=\"Concreto de desempenho ultra-alto\" srcset=\"https:\/\/tenessy.com\/wp-content\/uploads\/2026\/03\/Ultra-High-Performance-Concrete.png 600w, https:\/\/tenessy.com\/wp-content\/uploads\/2026\/03\/Ultra-High-Performance-Concrete-300x195.png 300w, https:\/\/tenessy.com\/wp-content\/uploads\/2026\/03\/Ultra-High-Performance-Concrete-18x12.png 18w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-4020bf0 elementor-widget elementor-widget-heading\" data-id=\"4020bf0\" data-element_type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">\u2160.Introdu\u00e7\u00e3o<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-5ae54ec elementor-widget elementor-widget-text-editor\" data-id=\"5ae54ec\" data-element_type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>O concreto de ultra-alto desempenho (UHPC) representa a gera\u00e7\u00e3o mais avan\u00e7ada de materiais \u00e0 base de cimento, caracterizada por <strong><b>excepcional resist\u00eancia \u00e0 compress\u00e3o, durabilidade superior e excelente trabalhabilidade<\/b><\/strong>. A obten\u00e7\u00e3o dessas propriedades requer um projeto de mistura altamente otimizado e aditivos qu\u00edmicos avan\u00e7ados. Entre eles, <a href=\"https:\/\/tenessy.com\/products\/polycarboxylate-superplasticizer\/\"><strong><b>Superplastificante de policarboxilato (PCE)<\/b><\/strong><\/a>\u00a0desempenha um papel decisivo.<\/p><p>Neste artigo, exploraremos como o superplastificante de policarboxilato funciona em sistemas UHPC, seus par\u00e2metros t\u00e9cnicos, recomenda\u00e7\u00f5es de dosagem, considera\u00e7\u00f5es de compatibilidade e vantagens de desempenho em aplica\u00e7\u00f5es pr\u00e1ticas de engenharia.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-bbece77 elementor-widget elementor-widget-heading\" data-id=\"bbece77\" data-element_type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">O que \u00e9 superplastificante de policarboxilato?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-c01a791 elementor-widget elementor-widget-image\" data-id=\"c01a791\" data-element_type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"800\" height=\"534\" src=\"https:\/\/tenessy.com\/wp-content\/uploads\/2026\/03\/Polycarboxylate-superplasticizers-1024x683.jpg\" class=\"attachment-large size-large wp-image-14094\" alt=\"\" srcset=\"https:\/\/tenessy.com\/wp-content\/uploads\/2026\/03\/Polycarboxylate-superplasticizers-1024x683.jpg 1024w, https:\/\/tenessy.com\/wp-content\/uploads\/2026\/03\/Polycarboxylate-superplasticizers-300x200.jpg 300w, https:\/\/tenessy.com\/wp-content\/uploads\/2026\/03\/Polycarboxylate-superplasticizers-768x512.jpg 768w, https:\/\/tenessy.com\/wp-content\/uploads\/2026\/03\/Polycarboxylate-superplasticizers-1536x1024.jpg 1536w, https:\/\/tenessy.com\/wp-content\/uploads\/2026\/03\/Polycarboxylate-superplasticizers-2048x1365.jpg 2048w, https:\/\/tenessy.com\/wp-content\/uploads\/2026\/03\/Polycarboxylate-superplasticizers-18x12.jpg 18w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-9058448 elementor-widget elementor-widget-text-editor\" data-id=\"9058448\" data-element_type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>O superplastificante de policarboxilato (PCE) \u00e9 um aditivo redutor de \u00e1gua de alto alcance baseado em uma tecnologia avan\u00e7ada de pol\u00edmero tipo pente. Diferentemente dos superplastificantes tradicionais \u00e0 base de naftaleno ou melamina, as mol\u00e9culas do PCE cont\u00eam:<\/p><ul><li>Um backbone carregado negativamente para repuls\u00e3o eletrost\u00e1tica<\/li><li>Cadeias laterais de poli\u00e9ter que proporcionam impedimento est\u00e9rico<\/li><\/ul><p>Esse mecanismo de dispers\u00e3o dupla permite uma dispers\u00e3o superior das part\u00edculas de cimento, resultando em<\/p><ul><li>Redu\u00e7\u00e3o extremamente alta de \u00e1gua<\/li><li>Melhoria da fluidez<\/li><li>Reten\u00e7\u00e3o prolongada de slump<\/li><li>Desenvolvimento aprimorado da for\u00e7a<\/li><\/ul><p>Para aplica\u00e7\u00f5es de UHPC, em que a propor\u00e7\u00e3o de \u00e1gua para aglutinante (w\/b) normalmente varia de <strong><b>0,14 a 0,20<\/b><\/strong>o PCE \u00e9 indispens\u00e1vel.<\/p>\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<div class=\"elementor-element elementor-element-9b2cd0b e-flex e-con-boxed e-con e-parent\" data-id=\"9b2cd0b\" data-element_type=\"container\" data-settings=\"{&quot;ekit_has_onepagescroll_dot&quot;:&quot;yes&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-47b4288 elementor-widget elementor-widget-heading\" data-id=\"47b4288\" data-element_type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">\u2162. Por que o UHPC requer superplastificante de policarboxilato<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-1b10f69 elementor-widget elementor-widget-text-editor\" data-id=\"1b10f69\" data-element_type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>As formula\u00e7\u00f5es de UHPC geralmente incluem:<\/p><ul><li>Cimento Portland comum (OPC)<\/li><li>Fuma\u00e7a de s\u00edlica (10-25%)<\/li><li>P\u00f3 de quartzo<\/li><li>Areia fina de quartzo<\/li><li>Fibras de a\u00e7o (1-3% por volume)<\/li><li>Teor de \u00e1gua muito baixo<\/li><\/ul><p>Sem um superplastificante de alto desempenho, a mistura n\u00e3o poderia ser trabalhada.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-6ff969d elementor-widget elementor-widget-heading\" data-id=\"6ff969d\" data-element_type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Principais desafios em UHPC:<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-829f690 elementor-widget elementor-widget-text-editor\" data-id=\"829f690\" data-element_type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<ol><li>Propor\u00e7\u00e3o extremamente baixa de \u00e1gua e aglutinante<\/li><li>Alto teor de p\u00f3 (800-1000 kg\/m\u00b3 de aglutinante)<\/li><li>Alta \u00e1rea de superf\u00edcie espec\u00edfica de s\u00edlica ativa<\/li><li>Requisitos de dispers\u00e3o da fibra<\/li><\/ol><p>O superplastificante de policarboxilato resolve esses desafios ao proporcionar alta fluidez sem aumentar o teor de \u00e1gua.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-2574a91 elementor-widget elementor-widget-heading\" data-id=\"2574a91\" data-element_type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">\u2163. Especifica\u00e7\u00f5es t\u00e9cnicas do PCE para UHPC<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-f3b615c elementor-widget elementor-widget-text-editor\" data-id=\"f3b615c\" data-element_type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Abaixo est\u00e3o os par\u00e2metros t\u00e9cnicos t\u00edpicos de um PCE de alto desempenho projetado para aplica\u00e7\u00f5es UHPC:<\/p><table><tbody><tr><td><p><strong><b>Propriedade<\/b><\/strong><\/p><\/td><td><p><strong><b>Especifica\u00e7\u00e3o<\/b><\/strong><\/p><\/td><\/tr><tr><td><p>Apar\u00eancia<\/p><\/td><td><p>L\u00edquido amarelo claro a incolor<\/p><\/td><\/tr><tr><td><p>Conte\u00fado s\u00f3lido<\/p><\/td><td><p>40% \u00b11%<\/p><\/td><\/tr><tr><td><p>Valor do pH<\/p><\/td><td><p>6.0 - 7.5<\/p><\/td><\/tr><tr><td><p>Densidade (20\u00b0C)<\/p><\/td><td><p>1,08 \u00b10,02 g\/cm\u00b3<\/p><\/td><\/tr><tr><td><p>Teor de cloreto<\/p><\/td><td><p>\u2264 0,1%<\/p><\/td><\/tr><tr><td><p>Conte\u00fado alcalino (Na\u2082O eq.)<\/p><\/td><td><p>\u2264 5.0%<\/p><\/td><\/tr><tr><td><p>Taxa de redu\u00e7\u00e3o de \u00e1gua<\/p><\/td><td><p>\u2265 30% (at\u00e9 40%)<\/p><\/td><\/tr><tr><td><p>Reten\u00e7\u00e3o de queda<\/p><\/td><td><p>60 a 120 minutos (ajust\u00e1vel)<\/p><\/td><\/tr><tr><td><p>Dosagem recomendada<\/p><\/td><td><p>0,15% - 0,35% do peso do aglutinante<\/p><\/td><\/tr><\/tbody><\/table><p>Para PCE do tipo p\u00f3 (seco por pulveriza\u00e7\u00e3o):<\/p><table><tbody><tr><td><p><strong><b>Propriedade<\/b><\/strong><\/p><\/td><td><p><strong><b>Especifica\u00e7\u00e3o<\/b><\/strong><\/p><\/td><\/tr><tr><td><p>Apar\u00eancia<\/p><\/td><td><p>P\u00f3 branco ou amarelo claro<\/p><\/td><\/tr><tr><td><p>Teor de umidade<\/p><\/td><td><p>\u2264 5%<\/p><\/td><\/tr><tr><td><p>Conte\u00fado s\u00f3lido<\/p><\/td><td><p>\u2265 95%<\/p><\/td><\/tr><tr><td><p>Taxa de redu\u00e7\u00e3o de \u00e1gua<\/p><\/td><td><p>\u2265 30%<\/p><\/td><\/tr><\/tbody><\/table>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-0251bbc elementor-widget elementor-widget-heading\" data-id=\"0251bbc\" data-element_type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Vantagens de desempenho em UHPC<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-ff4bbb5 elementor-widget elementor-widget-heading\" data-id=\"ff4bbb5\" data-element_type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">1. Alta capacidade de redu\u00e7\u00e3o de \u00e1gua<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-9fd1a6b elementor-widget elementor-widget-text-editor\" data-id=\"9fd1a6b\" data-element_type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>O UHPC requer um teor de \u00e1gua extremamente baixo. Um PCE de alta qualidade pode atingir:<\/p><ul><li><b><\/b><strong><b>30-40% redu\u00e7\u00e3o de \u00e1gua<\/b><\/strong><\/li><li>Mant\u00e9m a fluidez em propor\u00e7\u00f5es de p\/b abaixo de 0,18<\/li><\/ul><p>Isso permite que as resist\u00eancias \u00e0 compress\u00e3o sejam excedidas:<\/p><ul><li>120 MPa em 28 dias<\/li><li>150-180 MPa em sistemas otimizados<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-3ce1aa2 elementor-widget elementor-widget-heading\" data-id=\"3ce1aa2\" data-element_type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">2. Fluidez superior e capacidade de autocompacta\u00e7\u00e3o<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-f653b86 elementor-widget elementor-widget-text-editor\" data-id=\"f653b86\" data-element_type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Di\u00e2metro t\u00edpico da mesa de fluxo de UHPC:<\/p><ul><li>240 - 300 mm (sem vibra\u00e7\u00e3o)<\/li><\/ul><p>O superplastificante de policarboxilato garante:<\/p><ul><li>Dispers\u00e3o uniforme de s\u00edlica ativa<\/li><li>Viscosidade reduzida<\/li><li>Melhor distribui\u00e7\u00e3o da fibra de a\u00e7o<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-f62e036 elementor-widget elementor-widget-heading\" data-id=\"f62e036\" data-element_type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">3. Excelente reten\u00e7\u00e3o de slump<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-4015d1b elementor-widget elementor-widget-text-editor\" data-id=\"4015d1b\" data-element_type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Para elementos UHPC pr\u00e9-moldados ou transporte longo:<\/p><ul><li>Abertura inicial: 260 mm<\/li><li>Ap\u00f3s 60 minutos: \u2265 230 mm<\/li><\/ul><p>O desempenho da reten\u00e7\u00e3o pode ser personalizado com o ajuste da estrutura do pol\u00edmero (cadeias laterais mais longas ou grupos retardadores).<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-95e5813 elementor-widget elementor-widget-heading\" data-id=\"95e5813\" data-element_type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">4. Desenvolvimento aprimorado da for\u00e7a<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-f95629a elementor-widget elementor-widget-text-editor\" data-id=\"f95629a\" data-element_type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Melhorando a dispers\u00e3o do cimento e reduzindo a flocula\u00e7\u00e3o:<\/p><ul><li>Resist\u00eancia inicial (24 horas): 50-80 MPa (com cura por calor)<\/li><li>Resist\u00eancia \u00e0 compress\u00e3o em 28 dias: 120-180 MPa<\/li><\/ul><p>A menor porosidade resulta em:<\/p><ul><li>Permeabilidade reduzida<\/li><li>Maior durabilidade<\/li><li>Maior resist\u00eancia ao congelamento e descongelamento<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-f12b1d2 elementor-widget elementor-widget-heading\" data-id=\"f12b1d2\" data-element_type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">\u2165. Compatibilidade com materiais UHPC<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-aed13ec elementor-widget elementor-widget-text-editor\" data-id=\"aed13ec\" data-element_type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Um PCE de alto desempenho deve demonstrar compatibilidade com:<\/p><p><strong><b>Tipos de cimento<\/b><\/strong><\/p><ul><li>ASTM Tipo I\/II OPC<\/li><li>CEM I 52.5R<\/li><li>Cimento com baixo teor de \u00e1lcalis<\/li><\/ul><p><strong><b>Materiais ciment\u00edcios complementares (SCMs)<\/b><\/strong><\/p><ul><li>Fuma\u00e7a de s\u00edlica (10-25%)<\/li><li>Esc\u00f3ria de alto-forno granulada mo\u00edda (GGBS)<\/li><li>Cinzas volantes (Classe F)<\/li><\/ul><p><strong><b>Fibras<\/b><\/strong><\/p><ul><li>Fibras de a\u00e7o<\/li><li><a href=\"https:\/\/tenessy.com\/products\/pp-fiber-polypropylene-fiber\/\">Fibras de polipropileno<\/a><\/li><li>Fibras de basalto<\/li><\/ul><p>A boa compatibilidade garante um fluxo est\u00e1vel e evita a entrada excessiva de ar.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-889ef53 elementor-widget elementor-widget-heading\" data-id=\"889ef53\" data-element_type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">\u2166. Dosagem recomendada em UHPC<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-1bb479a elementor-widget elementor-widget-text-editor\" data-id=\"1bb479a\" data-element_type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Faixa de dosagem t\u00edpica:<\/p><ul><li><b><\/b><strong><b>18% - 0,30% por peso do aglutinante total<\/b><\/strong><\/li><\/ul><p>Exemplo de projeto de mistura de UHPC:<\/p><table><tbody><tr><td><p><strong><b>Componente<\/b><\/strong><\/p><\/td><td><p><strong><b>Quantidade (kg\/m\u00b3)<\/b><\/strong><\/p><\/td><\/tr><tr><td><p>Cimento<\/p><\/td><td><p>750<\/p><\/td><\/tr><tr><td><p>Fuma\u00e7a de s\u00edlica<\/p><\/td><td><p>180<\/p><\/td><\/tr><tr><td><p>Quartzo em p\u00f3<\/p><\/td><td><p>150<\/p><\/td><\/tr><tr><td><p>Areia<\/p><\/td><td><p>1000<\/p><\/td><\/tr><tr><td><p>\u00c1gua<\/p><\/td><td><p>160<\/p><\/td><\/tr><tr><td><p>Fibra de a\u00e7o<\/p><\/td><td><p>150<\/p><\/td><\/tr><tr><td><p>PCE<\/p><\/td><td><p>2.0 - 3.0<\/p><\/td><\/tr><\/tbody><\/table><p>A dosagem final deve ser otimizada por meio de testes laboratoriais.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-8d61598 elementor-widget elementor-widget-heading\" data-id=\"8d61598\" data-element_type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">\u2167. \u00c1reas de aplica\u00e7\u00e3o do UHPC com PCE<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-1d5b408 elementor-widget elementor-widget-text-editor\" data-id=\"1d5b408\" data-element_type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>O superplastificante de policarboxilato permite o uso de UHPC em..:<\/p><ul><li>Vigas de pontes<\/li><li>Pain\u00e9is de fachada pr\u00e9-moldados<\/li><li>Estruturas mar\u00edtimas<\/li><li>Torres de turbinas e\u00f3licas<\/li><li>Componentes ferrovi\u00e1rios de alta velocidade<\/li><li>Elementos arquitet\u00f4nicos finos<\/li><\/ul><p>Nos setores de pr\u00e9-moldados, o r\u00e1pido desenvolvimento da resist\u00eancia permite a desmoldagem em 24 horas sob condi\u00e7\u00f5es de cura a vapor.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-83ea234 elementor-widget elementor-widget-heading\" data-id=\"83ea234\" data-element_type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">\u2168. Conclus\u00e3o<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-06ef32d elementor-widget elementor-widget-text-editor\" data-id=\"06ef32d\" data-element_type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>O superplastificante de policarboxilato \u00e9 um componente essencial do concreto de ultra-alto desempenho (UHPC). Sua estrutura molecular avan\u00e7ada proporciona:<\/p><ul><li>Alta redu\u00e7\u00e3o de \u00e1gua (\u226530%)<\/li><li>Excelente fluidez<\/li><li>Reten\u00e7\u00e3o superior de slump<\/li><li>Aumento da resist\u00eancia em at\u00e9 180 MPa<\/li><li>Compatibilidade com s\u00edlica ativa e fibras<\/li><\/ul><p>Sem a tecnologia PCE, o UHPC moderno n\u00e3o seria t\u00e9cnica ou economicamente vi\u00e1vel.<\/p><p>Para os produtores de UHPC que buscam um desempenho otimizado, selecionar um superplastificante de policarboxilato de alta qualidade com par\u00e2metros t\u00e9cnicos verificados e testes de compatibilidade \u00e9 essencial para obter resultados consistentes e confi\u00e1veis.<\/p>\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>","protected":false},"excerpt":{"rendered":"<p>O Concreto de Ultra-Alto Desempenho (UHPC) representa a gera\u00e7\u00e3o mais avan\u00e7ada de materiais \u00e0 base de cimento, caracterizada por excepcional resist\u00eancia \u00e0 compress\u00e3o, durabilidade superior e excelente trabalhabilidade. A obten\u00e7\u00e3o dessas propriedades requer um projeto de mistura altamente otimizado e aditivos qu\u00edmicos avan\u00e7ados. Entre eles, o superplastificante de policarboxilato (PCE) desempenha um papel decisivo.<\/p>","protected":false},"author":1,"featured_media":14093,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"categories":[35],"tags":[],"class_list":["post-14086","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-industry-news"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.7 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Polycarboxylate Superplasticizer for Ultra-High Performance Concrete (UHPC) - HPMC|HEMC|HEC|RDP Manufacturer-TENESSY<\/title>\n<meta name=\"description\" content=\"Polycarboxylate Superplasticizer is a critical component in Ultra-High Performance Concrete (UHPC).\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/tenessy.com\/pt\/superplastificante-de-policarboxilato-para-concreto-de-ultra-alto-desempenho-uhpc\/\" \/>\n<meta property=\"og:locale\" content=\"pt_BR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Polycarboxylate Superplasticizer for Ultra-High Performance Concrete (UHPC) - 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