2008
DOI: 10.4025/actascitechnol.v29i2.583
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A utilização de resíduos de pneus inservíveis em argamassa de revestimento

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Cited by 5 publications
(6 citation statements)
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“…It is possible to verify that the largest concentrations of rubber decrease compression strength as shown on Figure 12; however, fly ash contributes to increasing this property when added in largest amounts. The results from this work agree with those found by [3] [5] and [26], that verify the reduction of compressive strength in mortars as the concentration of rubber increases, by applying other analysis approaches. Also according to research studies performed by [27] and [28], that revealed the presence of greater amounts of hydrated calcium silicate (C-S-H) in the cement paste matrix in composites containing fly ash, contrary to the transition zone, where there was the presence of ettringite and calcium hydroxide.…”
Section: (1)supporting
confidence: 89%
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“…It is possible to verify that the largest concentrations of rubber decrease compression strength as shown on Figure 12; however, fly ash contributes to increasing this property when added in largest amounts. The results from this work agree with those found by [3] [5] and [26], that verify the reduction of compressive strength in mortars as the concentration of rubber increases, by applying other analysis approaches. Also according to research studies performed by [27] and [28], that revealed the presence of greater amounts of hydrated calcium silicate (C-S-H) in the cement paste matrix in composites containing fly ash, contrary to the transition zone, where there was the presence of ettringite and calcium hydroxide.…”
Section: (1)supporting
confidence: 89%
“…Yet in mortars containing rubber, they displayed decreased compressive strength. This reduction can be related to the increase in the incorporated air content in the fresh state and because the waste products displayed low specific mass, as this situation was also witnessed by [5] and [26]. Besides that, the decrease in compressive strength in mortars is related to the absence of adherence between the rubber and the cement paste matrix, as this can be observed in Figure 7 (c); this fact was also witnessed by [25].…”
Section: Figurementioning
confidence: 66%
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“…Como traço a ser utilizado para estudo, Canova et al (2007) fizeram uso do traço 1:1,5:9 em volume. Considerando que o traço estudado por estes autores é semelhante ao traço utilizado convencionalmente em obra para emboço e/ou reboco, traço 1:2:9 em volume, segundo Guimarães et al (2004), decidiu-se confeccionar as amostras com o traço convencional de obra.…”
Section: Materiais E Métodosunclassified
“…Com intuito de manter a trabalhabilidade dos diferentes traços de argamassa, fixou-se o índice de consistência ao invés da relação água/cimento. Portanto, a quantidade de água que foi acrescida à mistura foi determinada a partir do índice de consistência adotado para argamassa, que é o intervalo de (255 ± 10)mm, conforme referenciado por CANOVA [23].…”
Section: Materiais E Métodosunclassified