https://repositorio.ufba.br/handle/ri/15879
Tipo: | Artigo de Periódico |
Título: | High-volume fly ash concrete with and without hydrated lime: Chloride diffusion coefficient from accelerated test |
Título(s) alternativo(s): | Journal of Materials in Civil Engineering |
Autor(es): | Hoppe Filho, J. Medeiros, M. H. F. Pereira, E. Helene, P. Isaia, G. C. |
Autor(es): | Hoppe Filho, J. Medeiros, M. H. F. Pereira, E. Helene, P. Isaia, G. C. |
Abstract: | Fly ash changes the microstructure of paste and can increase concrete durability. Calcium hydrated lime was added to concrete with 50% of the cement, by weight, substituted with fly ash, with the intent of replacing some of the calcium hydroxide consumed by the pozzolanic activity. Three proportions of mixes were studied: concrete with high early strength cement (HESC), concrete with 50% HESC and 50% fly ash, and concrete with 50% HESC, 50% fly ash and an additional 20% of hydrated lime. They were then tested according to ASTM C1202, but with the application of a voltage of 30 V during 35 h. Results revealed that concretes containing fly ash and hydrated lime presented a lower accumulated charge density and coefficient of chloride diffusion than the HESC concrete used as a reference. |
Palavras-chave: | Chloride diffusion Migration Fly ash Hydrated lime Concrete |
Tipo de Acesso: | Acesso Aberto |
URI: | http://repositorio.ufba.br/ri/handle/ri/15879 |
Data do documento: | 2013 |
Aparece nas coleções: | Artigo Publicado em Periódico (ICADS) |
Arquivo | Descrição | Tamanho | Formato | |
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10.1061(ASCE)MT.1943-5533.0000596.pdf | 1 MB | Adobe PDF | Visualizar/Abrir |
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