Propriedades de concreto auto-adensável contendo cinzas volantes
DOI:
https://doi.org/10.21814/ecum.4189Resumo
Self-compacting concrete is a high performance concrete with excellent rheological properties that can be spread in areas of difficult access. Selfcompacting concrete requires a high consumption of cement production, which has a negative effect on the environmental aspect, since the production of cement releases significant amounts of CO2. This study aims analysis the influence of the substitution (20 and 40% by weight) of Portland cement by fly ash on the selfcompacting concrete properties in the fresh state (spreading, workability, passing ability - J-ring test, viscosity - V-funnel test) and hardened (compressive strength).
The passing ability was proved more effective to the mixture with 20% of replacement. To the viscosity, control concrete had lower flow time in V-funnel. The compressive strength results at 28 days showed a reduction of 9.5% for concrete with 20% fly ash and 77.0% for concrete with 40% fly ash compared to the control concrete.
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Direitos de Autor (c) 2022 A. Schackow, C. Effting, D. Marcon Neto, D.E. Bonifácio, I.R. Gomes
Este trabalho encontra-se publicado com a Licença Internacional Creative Commons Atribuição 4.0.
