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Caracterização do Betão Geopolimérico Autocompactável

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£68.00 £64.60 £65.96 £67.32 £68.68 £70.04 £71.40 23 July 2026 05 August 2026 19 August 2026 01 September 2026 15 September 2026
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Price distribution over 55 days • 1 price levels

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55 days 0 14 28 41 55 £68 Days at Price

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Price range: £68 - £68

Price levels: 1 different prices over 55 days

Description

O presente estudo apresenta uma investigação sobre a determinação do teor ótimo dos parâmetros da mistura nos seus intervalos aceitáveis através de várias características frescas, mecânicas e de durabilidade, juntamente com a análise microestrutural do betão auto-adensável à base de escória granulada de alto-forno moída (GGBFS) curado à temperatura ambiente. O betão auto-adensável (SCC) à base de cimento Portland normal (OPC) foi também preparado como betão de controlo. Tanto o SCGC M25 como o SCC foram caracterizados através de ensaios de propriedades no estado fresco, satisfazendo a fluidez, a capacidade de passagem e a resistência à segregação. As propriedades mecânicas e as características de durabilidade foram avaliadas. Os principais parâmetros de mistura considerados no SCGC, com as suas gamas de variação, foram a concentração molar de hidróxido de sódio (10M, 12M, 14M, 16M), a relação silicato de sódio/hidróxido (1,5, 2,0, 2,5, 3,0), a dosagem de superplastificante (SP) (5%, 6%, 7%, 8%) e a percentagem de água extra (EW) (15%, 18%, 21%, 24%). Os resultados do SCGC foram comparados com o SCC de controlo e discutidos. Os valores óptimos do parâmetro de mistura foram encontrados para uma concentração de NaOH 12M, rácio Na2SiO3 para NaOH de 2,5, dose de SP de 7% e percentagem de EW de 21%.

Product Specifications

Format
paperback
Domain
Amazon UK
Release Date
07 March 2024
Listed Since
08 March 2024

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