2021
DOI: 10.1590/s1517-707620210003.13050
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Influência do aditivo modificador de viscosidade nas propriedades do concreto autoadensável

Abstract: RESUMO A autoadensabilidade do Concreto Autoadensável (CAA) é garantida pelo alcance de alta fluidez, a habilidade de passar por obstáculos sem sofrer bloqueio e da resistência à segregação. No entanto, tal fluidez pode causar efeitos de segregação do agregado e de exsudação da água, os quais podem ser controlados com a incorporação de aditivos modificadores de viscosidade. A presente pesquisa avaliou a influência de aditivos químicos, com foco no aditivo modificador de viscosidade. Foram produzidos cinco conc… Show more

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“…It is known that the properties of concrete change significantly during the curing process. Some authors state that additives based on polycarboxylates can act by delaying cement hydration, depending on the molecular structure of the chemical compound [22][23][24][25].…”
Section: Introductionmentioning
confidence: 99%
“…It is known that the properties of concrete change significantly during the curing process. Some authors state that additives based on polycarboxylates can act by delaying cement hydration, depending on the molecular structure of the chemical compound [22][23][24][25].…”
Section: Introductionmentioning
confidence: 99%