Role of Steel Fibers in Shear Resistance of Beams in Arch Action

Gali, Sahith and K V L, Subramaniam (2017) Role of Steel Fibers in Shear Resistance of Beams in Arch Action. In: 71st RILEM Annual Week & ICACMS, 03-08,September, 2017, Chennai, IIT Madras.

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Reinforced concrete beams with discrete hooked-end steel fibe rs were tested with a shear span to depth ratio equal to 1.8. Digital im age correlation (DIC) technique was used to obtain the full-field displacements from the beam during the load response. The formation and propagation of a shear crack which directly influences the load response and peak load in the load response of the beam is moni tored using the displacement fr om the DIC measurements. There is a continuous slip across the crack face s of the shear crack with increasing load carrying capacity up to the peak load. The shear crack exhibits a dilatant behavior with increasing slip. Failure in control beams is brittle which was by the opening of dominant shear crack in shear span at a small value of crack opening. At the peak load, the shear crack pattern in fiber reinforced conc rete was identical to the crack pattern in the control beam. The dilatant behavior from the measured crack opening a nd crack slip displacements obtained from the control and the SFRC beams is identical. The fiber reinforced concrete beams exhibit a ductile response with a post peak load car rying capacity even after the continued opening of the dominant shear crack.

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IITH Creators:
IITH CreatorsORCiD
K V L, Subramaniam
Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: Hooked-end steel fibers, ductility, crac k propagation, shear-dilatant behaviour, shear span to effective depth ratio.
Subjects: Civil Engineering > Construction & Building Technology
Divisions: Department of Civil Engineering
Depositing User: Team Library
Date Deposited: 10 Oct 2017 09:58
Last Modified: 10 Oct 2017 09:58
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