Resumo

CARRILLO, Julián; CARDENAS PULIDO, Jhon  e  APERADOR CHAPARRO, William. Splitting tensile performance of RC-65/35-BN steel fiber reinforced concrete subjected to the effect of chloride ion. Rev. Fac. Ing. UCV [online]. 2015, vol.30, n.3, pp.49-61. ISSN 0798-4065.

The influence of two corrosive environments on the mechanical properties of RC-65/35-BN steel fiber reinforced concrete, SFRC, under splitting tensile stresses is assessed in this paper. The experimental program comprised the tests of 54 cylindrical-type specimens of concrete reinforced with fiber dosages of 30 and 60 kg/m³. During 60 days, 18 cylinders were subjected to the action of a watery environment, 18 cylinders were subjected to an environment of 3.5% NaCl solution (chloride ion) and 18 cylinders were kept in unaltered conditions. For that exposure time, measured results demonstrated that the corrosive environments, specially the environment of 3.5% NaCl solution, slightly improves the bond between concrete matrix and steel fibers, and thus the strain capacity of SFRC increases. However, the 3.5% NaCl solution causes a loss of roughly 13% and 15% on the maximum tensile strength and tensile toughness, respectively, due to the degradation effect provided by the chloride ion.

Palavras-chave : SFRC; fiber dosage; chloride ion; splitting tensile strength; toughness.

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