Influence of steel fibers and mineral additions on cracking behavior of reinforced concrete tension members
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Data
2009-06
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Resumo
In this work the influence of steel fibers and mineral additions (silica fume and fly-ash) on cracking behavior of reinforced concrete tension
members was investigated. Hooked-end steel fibers with aspect ratio of 65 were used in volumes of 0.75%, 1.00% e 1.50%. Sixteen
tension tests were performed in tension members 800 mm long with square cross section of 150 mm of side reinforced with single bar of
CA-50 steel with diameter of 20 mm for determining crack widths. The results showed that steel fibers reduced the average crack width up
to 75% and mineral additions improved cracking behavior of concrete. Crack widths were compared with suggested values by Brazilian,
American and European recommendations, which were unsuitable for estimating crack width in steel fiber reinforced concrete.
Descrição
Palavras-chave
Tension specimen, Tirante, Reinforced concrete, Silica fume, Steel fiber, Concreto armado, Fibras de aço, Fly-ash, Cracking behavior, Fissuração, Sílica ativa, Cinza volante
Citação
OLIVEIRA JÚNIOR, L. A. et al. Influence of steel fibers and mineral additions on cracking behavior of reinforced concrete tension members. Revista IBRACON de Estruturas e Materiais, São Paulo, v. 2, n. 2, p. 142-165, June 2009.