Shear behavior of steel fiber reinforced concrete using full-field displacements from digital image correlation

Shanableh, A and Gali, Sahith and K V L, Subramaniam and Maalej, M and Barakat, S and Omar, M and Al-Toubat, S and Al-Ruzouq, R and Hamad, K (2017) Shear behavior of steel fiber reinforced concrete using full-field displacements from digital image correlation. MATEC Web of Conferences, 120. 04003. ISSN 2261-236X

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Reinforced concrete beams with discrete hooked-end steel fibers at 0.5% volume fraction are tested with a shear span to depth (a/d) ratio equal to 1.8. Digital image correlation (DIC) technique was used to obtain the full-filed displacements from the beam. The formation and propagation of a shear crack which directly influences the load response and the peak load in the load response of the beam is monitored using the displacement information available from DIC. There is a continuous increase in slip across the crack faces with increasing load, which produces an increase in the crack opening. The dilatant behavior indicated by the proportion of crack opening to slip displacement obtained from the control and the SFRC beams is identical. Failure in control beams is brittle and was produced by the opening of dominant shear crack within the shear span. At the peak load, the shear crack pattern in fiber reinforced concrete is identical to the crack pattern in the control beam. The fiber reinforced concrete beams exhibit post peak load carrying capacity with continued slip of the dominant shear crack. The crack bridging stress provided by the fibers results in a significant increase shear transfer across the crack which provides significant post-peak load carrying capacity with increasing slip of the shear crack.

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IITH Creators:
IITH CreatorsORCiD
K V L, Subramaniam
Item Type: Article
Additional Information: American Concrete Institute,et al.,International Society for Photogrammetry and Remote Sensing,Sharjah Electricity and Water Authority,Sharjah Research Academy,United Arab Emirates Ministry of Infrastructure Development
Uncontrolled Keywords: Beams and girders; Concrete beams and girders; ConcretesCracks; Fiber reinforced materials; FibersImage analysis; Load limitsLoads (forces); Reinforced plastics; Steel fibers; Strain measurement; Stress intensity factors; Sustainable development
Subjects: Civil Engineering > Construction & Building Technology
Civil Engineering > Structural engineering and underground construction
Divisions: Department of Civil Engineering
Depositing User: Team Library
Date Deposited: 04 Sep 2017 07:31
Last Modified: 04 Sep 2017 07:31
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