{"id":13003,"date":"2025-09-20T08:00:05","date_gmt":"2025-09-20T08:00:05","guid":{"rendered":"https:\/\/tenessy.com\/?p=13003"},"modified":"2025-09-22T09:39:56","modified_gmt":"2025-09-22T09:39:56","slug":"flake-polycarboxylate-superplasticizer-pce-performance-introduction","status":"publish","type":"post","link":"https:\/\/tenessy.com\/pt\/introducao-ao-desempenho-do-superplastificante-de-policarboxilato-em-flocos-pce\/","title":{"rendered":"Introdu\u00e7\u00e3o ao desempenho do superplastificante de policarboxilato (PCE) em flocos"},"content":{"rendered":"
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\u2160.Introdu\u00e7\u00e3o ao produto<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\"Superplastificante\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
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Superplastificante de policarboxilato em flocos (PCE)<\/u><\/a>\u00a0Essa \u00e9 uma nova gera\u00e7\u00e3o de flocos de superplastificante de policarboxilato de alto desempenho e ecologicamente corretos, desenvolvida por nossa empresa. Ele usa \u00e9ter de policarboxilato modificado como mat\u00e9ria-prima principal.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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Caracter\u00edsticas de desempenho do PCE em flocos<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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  1. Alta taxa de redu\u00e7\u00e3o de \u00e1gua: Ele tem excelente dispersibilidade e a taxa de redu\u00e7\u00e3o de \u00e1gua pode chegar a mais de 25% em dosagem saturada. Alguns produtos, como o agente redutor de \u00e1gua de alto desempenho \u00e0 base de \u00e1cido policarbox\u00edlico FLT40, podem at\u00e9 atingir uma taxa de redu\u00e7\u00e3o de \u00e1gua de mais de 34%, o que pode melhorar efetivamente o desempenho de trabalho do concreto, aumentar a resist\u00eancia do concreto e economizar cimento.<\/li><\/ol>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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    1. Bom desempenho de preserva\u00e7\u00e3o de abatimento: Tem boa capacidade de redu\u00e7\u00e3o de \u00e1gua e preserva\u00e7\u00e3o do abatimento, pode aumentar a coes\u00e3o do concreto, evitar a segrega\u00e7\u00e3o do concreto, estender o tempo de transporte do concreto e o tempo de reten\u00e7\u00e3o no canteiro de obras e garantir o desempenho de constru\u00e7\u00e3o bombe\u00e1vel do concreto.<\/li><\/ol>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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      1. Forte adaptabilidade: Possui excelente adaptabilidade a diferentes cimentos, sejam eles v\u00e1rios cimentos Portland, cimento Portland comum, cimento Portland de esc\u00f3ria e v\u00e1rias misturas, podendo exercer boa dispersibilidade e desempenho de redu\u00e7\u00e3o de \u00e1gua.<\/li><\/ol>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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        \u00a0 \u00a0 \u00a04. o efeito de fortalecimento \u00e9 significativo: taxa de crescimento do concreto, melhorando o desempenho de retra\u00e7\u00e3o, reduzindo a taxa de carboniza\u00e7\u00e3o do concreto e ajudando a melhorar a qualidade geral do concreto.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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        \u2162. \u00c1rea de aplica\u00e7\u00e3o<\/h2>\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
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        1. Concreto pr\u00e9-misturado: adequado para v\u00e1rios tipos de concreto pr\u00e9-misturado, especialmente argamassa especial misturada a seco<\/u><\/a>que pode ser usado para autonivelamento \u00e0 base de cimento, materiais de rejuntamento sem retra\u00e7\u00e3o<\/u><\/a>, agentes de rejuntamento,pisos autonivelantes<\/u><\/a>, argamassa imperme\u00e1vel<\/u><\/a>,argamassa de reparo<\/u><\/a>, argamassa pulverizada<\/u><\/a>concreto de alta resist\u00eancia misturado a seco, etc.<\/li><\/ol>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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          1. Argamassa especial: usada especialmente para argamassa de mistura seca especial \u00e0 base de gesso e cimento, que pode atender aos requisitos de fluidez, reten\u00e7\u00e3o de \u00e1gua e resist\u00eancia.<\/li><\/ol>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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            Par\u00e2metros detalhados<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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            Como usar o PCE em flocos<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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            \u9879\u76eeProjeto<\/b><\/strong><\/p><\/td>

            \u5355\u4f4dUnidade<\/b><\/strong><\/p><\/td>

            \u6807\u51c6Padr\u00e3o<\/b><\/strong><\/p><\/td><\/tr>

            Apar\u00eancia<\/p><\/td>

            \/<\/p><\/td>

            Flocos brancos ou amarelos claros<\/p><\/td><\/tr>

            Densidade a granel<\/p><\/td>

            Kg\/m\u00b3<\/p><\/td>

            500\u00b1 100<\/p><\/td><\/tr>

            Valor do pH (23\u00b0C)<\/p><\/td>

            \/<\/p><\/td>

            6.0\u00b1 1.0<\/p><\/td><\/tr>

            Conte\u00fado dispon\u00edvel<\/p><\/td>

            %<\/p><\/td>

            97.0\u00b1 1.0<\/p><\/td><\/tr>

            Conte\u00fado de \u00e1gua<\/p><\/td>

            %<\/p><\/td>

            \u2264 3.0<\/p><\/td><\/tr>

            Taxa de redu\u00e7\u00e3o de \u00e1gua<\/p><\/td>

            %<\/p><\/td>

            \u2265 25<\/p><\/td><\/tr>

            Conte\u00fado de \u00edons cloreto<\/p><\/td>

            %<\/p><\/td>

            \u2264 0.02<\/p><\/td><\/tr>

            Conte\u00fado alcalino<\/p><\/td>

            %<\/p><\/td>

            \u2264 0.3<\/p><\/td><\/tr><\/tbody><\/table>

            \u00a0<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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            O uso de \u00a0floco <\/u>PCE<\/u><\/a>\u00a0deve seguir os princ\u00edpios de \"medi\u00e7\u00e3o precisa, agita\u00e7\u00e3o adaptativa e ajuste din\u00e2mico\". As etapas espec\u00edficas s\u00e3o as seguintes:<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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            1. Determinar a dosagem (pr\u00e9-requisito b\u00e1sico)<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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            Faixa de dosagem: A dosagem recomendada \u00e9 de 1%-3% do material ciment\u00edcio total. A dosagem espec\u00edfica deve ser ajustada com base no grau de resist\u00eancia do concreto, no tipo de material ciment\u00edcio (por exemplo, cimento comum, p\u00f3 mineral, cinzas volantes), no ambiente da constru\u00e7\u00e3o (temperatura, umidade) e nos requisitos de abatimento.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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            2. dissolu\u00e7\u00e3o e dilui\u00e7\u00e3o (procedimentos espec\u00edficos para flocos)<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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            Flak<\/u>e PCE<\/u>\u00a0<\/u><\/a>deve ser dissolvido em um l\u00edquido antes de ser adicionado ao concreto<\/u><\/a>. N\u00e3o adicione flocos s\u00f3lidos diretamente \u00e0 mistura de concreto. M\u00e9todo de dissolu\u00e7\u00e3o: Adicione lentamente o redutor de \u00e1gua em forma de flocos \u00e0 \u00e1gua em temperatura ambiente em uma propor\u00e7\u00e3o de massa de 1:5-10 (a concentra\u00e7\u00e3o pode ser ajustada com base nas adi\u00e7\u00f5es subsequentes). Mexa em uma velocidade constante usando um dispositivo de agita\u00e7\u00e3o (como um agitador el\u00e9trico) por 5 a 10 minutos at\u00e9 que os s\u00f3lidos estejam completamente dissolvidos, formando um l\u00edquido uniforme, claro ou amarelo-claro, sem sedimentos.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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            3. m\u00e9todo de adi\u00e7\u00e3o e mistura<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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            Ordem recomendada de adi\u00e7\u00e3o: Use o m\u00e9todo de p\u00f3s-adi\u00e7\u00e3o ou o m\u00e9todo de adi\u00e7\u00e3o simult\u00e2nea, sendo prefer\u00edvel o m\u00e9todo de p\u00f3s-adi\u00e7\u00e3o (ou seja, misturar areia, cimento e \u00e1gua por 30 segundos para formar uma argamassa e, em seguida, adicionar o redutor de \u00e1gua dilu\u00eddo e continuar misturando por 60 a 90 segundos). Isso pode aumentar a taxa de redu\u00e7\u00e3o de \u00e1gua em 5%-10% e melhorar a reten\u00e7\u00e3o do slump.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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            4. Controle do processo de constru\u00e7\u00e3o<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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            Monitoramento de queda: Abatimento do concreto<\/u><\/a>\u00a0deve ser testado imediatamente ap\u00f3s deixar a bomba de concreto. Se n\u00e3o atender aos requisitos de constru\u00e7\u00e3o (por exemplo, o slump exigido para o concreto bombeado \u00e9 de 180 \u00b1 20 mm), uma pequena quantidade de redutor de \u00e1gua dilu\u00eddo pode ser adicionada dentro da faixa especificada (n\u00e3o excedendo 20% da dosagem original). Ap\u00f3s a adi\u00e7\u00e3o, a mistura r\u00e1pida deve ser realizada por pelo menos 30 segundos.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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            \u2165. Precau\u00e7\u00f5es<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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            1. compatibilidade de material <\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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            Compatibilidade com cimento: Diferentes marcas e lotes de cimento (por exemplo, cimento Portland, cimento Portland comum) podem variar em termos de composi\u00e7\u00e3o mineral (teor de C3A e C3S) e forma de gesso (gesso di-hidratado, anidrita)<\/u><\/a>o que pode levar a diferen\u00e7as na compatibilidade dos redutores de \u00e1gua.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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            2. condi\u00e7\u00f5es ambientais e de constru\u00e7\u00e3o<\/h3>\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
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            Efeitos da temperatura:<\/p>

            Altas temperaturas (\u226530\u00b0C): A perda de abatimento do concreto acelera, exigindo um aumento adequado na dosagem de PCE (de 10%-20%) ou a adi\u00e7\u00e3o de um componente retardador (como gluconato de s\u00f3dio). Os tempos de transporte e coloca\u00e7\u00e3o tamb\u00e9m devem ser reduzidos, e a mistura de concreto deve ser protegida da luz solar direta.<\/p>

            Baixas temperaturas (\u22645\u00b0C): O PCE se dissolve mais lentamente, exigindo um tempo de mistura maior (at\u00e9 30 segundos a mais do que em temperatura ambiente). Se a temperatura for \u22640\u00b0C, a \u00e1gua de mistura deve ser aquecida (de 10 a 20\u00b0C) para evitar que a solu\u00e7\u00e3o de PCE congele e se torne ineficaz.<\/p>

            Requisitos de armazenamento:<\/p>

            Flocos <\/u>PCE<\/u><\/a>\u00a0deve ser armazenado em um dep\u00f3sito seco, bem ventilado e fresco. Evite umidade (a umidade pode causar aglomera\u00e7\u00e3o e dificuldade de dissolu\u00e7\u00e3o) e luz solar direta (altas temperaturas podem degradar o desempenho).<\/p>

            O PCE l\u00edquido dissolvido deve ser usado dentro de 24 horas. Qualquer por\u00e7\u00e3o n\u00e3o utilizada deve ser selada e armazenada para evitar a exposi\u00e7\u00e3o prolongada ao ar, o que pode causar deteriora\u00e7\u00e3o.<\/p>

            O PCE l\u00edquido dissolvido deve ser usado dentro de 24 horas. Qualquer por\u00e7\u00e3o n\u00e3o utilizada deve ser selada e armazenada para evitar a exposi\u00e7\u00e3o prolongada ao ar, o que pode causar deteriora\u00e7\u00e3o.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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            \u2166. Aplica\u00e7\u00f5es especiais recomendadas:<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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            Os superplastificantes de policarboxilato em flocos redutores de \u00e1gua PCE s\u00e3o amplamente utilizados em projetos com requisitos rigorosos de desempenho de concreto devido \u00e0 sua taxa de redu\u00e7\u00e3o de \u00e1gua ultra-alta (25%-35%), \u00e0 forte compatibilidade com v\u00e1rios materiais ciment\u00edcios e ambientes adversos e \u00e0s vantagens de sua forma s\u00f3lida (baixos custos de transporte e armazenamento e longa vida \u00fatil). Eles s\u00e3o particularmente adequados para concretos que exigem alta resist\u00eancia, alto desempenho, alta durabilidade e condi\u00e7\u00f5es especiais de constru\u00e7\u00e3o. As \u00e1reas de aplica\u00e7\u00e3o espec\u00edficas s\u00e3o as seguintes:<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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            1. Projetos de concreto de alta e ultra-alta resist\u00eancia<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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            Esses projetos exigem o aumento da resist\u00eancia por meio da redu\u00e7\u00e3o da propor\u00e7\u00e3o \u00e1gua-cimento (normalmente \u22640,30). Os flocos redutores de \u00e1gua PCE oferecem a capacidade precisa de redu\u00e7\u00e3o de \u00e1gua necess\u00e1ria para atender com precis\u00e3o a esses requisitos. Eles s\u00e3o uma mistura essencial para a formula\u00e7\u00e3o de concreto com graus de resist\u00eancia C60 e superiores. As aplica\u00e7\u00f5es t\u00edpicas incluem:<\/p>

            Estruturas de edif\u00edcios superaltos\/altos: Tubos centrais, colunas de estrutura, paredes de cisalhamento e outros componentes de suporte de carga em edif\u00edcios de escrit\u00f3rios e hot\u00e9is superaltos.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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            2. Componentes pr\u00e9-fabricados e edif\u00edcios pr\u00e9-fabricados<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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            As constru\u00e7\u00f5es pr\u00e9-fabricadas exigem muito da precis\u00e3o dimensional, da qualidade da superf\u00edcie e da efici\u00eancia da desmoldagem dos componentes pr\u00e9-fabricados (como pain\u00e9is compostos pr\u00e9-fabricados, vigas pr\u00e9-fabricadas e escadas pr\u00e9-fabricadas). Os produtos de chapa redutora de \u00e1gua da PCE, com seu baixo sangramento de \u00e1gua e alta uniformidade, oferecem um ajuste preciso.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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            3. Argamassas especiais e concreto funcional<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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            Os produtos em flocos redutores de \u00e1gua da PCE podem ser ajustados em dosagem e compostos para atender aos requisitos de argamassas especiais de alta fluidez, alta reten\u00e7\u00e3o de \u00e1gua e alta resist\u00eancia, bem como aos requisitos de desempenho especializado do concreto funcional.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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            \n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\"\"\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\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>","protected":false},"excerpt":{"rendered":"

            Introdu\u00e7\u00e3o ao produto Superplastificante de policarboxilato em flocos (PCE), essa \u00e9 uma nova gera\u00e7\u00e3o de flocos de superplastificante de policarboxilato de alto desempenho e ecologicamente corretos, desenvolvida por nossa empresa. Ele usa \u00e9ter de policarboxilato modificado como mat\u00e9ria-prima principal. Caracter\u00edsticas de desempenho do floco PCE Alta taxa de redu\u00e7\u00e3o de \u00e1gua: Possui excelente dispersibilidade e a taxa de redu\u00e7\u00e3o de \u00e1gua pode chegar a mais de 25% na dosagem saturada. [...]<\/p>","protected":false},"author":1,"featured_media":11524,"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":[34],"tags":[],"class_list":["post-13003","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-product-news"],"yoast_head":"\nFlake Polycarboxylate Superplasticizer (PCE) Performance Introduction - HPMC|HEMC|HEC|RDP Manufacturer-TENESSY<\/title>\n<meta name=\"description\" content=\"The manufacturer's latest product, flake polycarboxylate water reducer, is the preferred choice for high-strength concrete applications.\" \/>\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\/introducao-ao-desempenho-do-superplastificante-de-policarboxilato-em-flocos-pce\/\" \/>\n<meta property=\"og:locale\" content=\"pt_BR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Flake Polycarboxylate Superplasticizer (PCE) Performance Introduction - 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