Assessing the shear behavior of steel fiber reinforced concrete beams corroded under chloride attacks

Abstract

Steel corrosion affects the failure mechanism of deteriorated reinforced concrete (RC) beams. Meanwhile, there is a lack of research on the shear behavior of corroded RC beams, particularly corroded steel fiber reinforced concrete (SFRC) beams. This paper investigates the shear behavior of corroded SFRC beams with a 1.5 shear span-to-depth ratio. All beam specimens included steel fibers with 50 kg/m3. In particular, tensile longitudinal reinforcements were subjected to a corrosion degree of 16.4%, while stirrups were subjected to an approximately 24.1% corrosion degree. These results are compared to those obtained on a non-corroded beam. The obtained results from the four-point loading tests show that the corroded SFRC beams preserve a softening behavior as opposed to the sudden shear failure of RC beams without steel fibers.

An analytical approach to predict post-cracking behavior of steel fiber reinforced concrete considering the fibers orientation

“…The concept of enhancing the ductility of concrete by incorporating steel fibers has garnered significant interest in both the scientific community and industrial production. Over the past three decades, the steel fiber-reinforced concrete (SFRC) has expressed its benefits from numerous studies and practical applications [1][2][3][4].…”

A data-driven approach for investigating shear strength of slender steel fiber reinforcedconcrete beams

“…The shear behavior of slender steel fiber reinforced concrete (SSFRC) beams with cracks that have formed on slanted portions is challenging to predict. This is a result of the fact that the shear behavior of SSFRC beams is influenced by a variety of variables [1][2][3][4][5]. Therefore, it is necessary to model the interconnectedness of these several components in order to calculate shear strength.…”