Role of Steel Fibers in Shear Resistance of Beams in Arch Action Sahith Gali and Kolluru V. L. Subramaniam

Author(s):
Paper category: Proceedings
Book title: Proceedings of International Conferences (ICACMS) Advances in Construction Materials and systems Vol 2
Editor(s): Manu Santhanam, Ravindra Gettu, Radhakrishna G. Pillai, Sunitha K. Nayar
ISBN: 978-2-35158-194-0
e-ISBN: 978-2-35158-191-9
Publisher: RILEM Publications SARL
Publication year: 2017
Pages: 322-331
Total Pages: 10
Language : English

Abstract: Reinforced concrete beams with discrete hooked-end steel fibers were tested with a shear span to depth ratio equal to 1.8. Digital image 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 monitored using the displacement from the DIC measurements. There is a continuous slip across the crack faces 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 concrete was identical to the crack pattern in the control beam. The dilatant behavior from the measured crack opening and 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 carrying capacity even after the continued opening of the dominant shear crack.

Online publication : 2017
Publication type : full_text
Public price (Euros) : 0.00