Influence of Steel Fiber on the Shear Strength of a Concrete Beam
The shear failure in a concrete beam is a brittle type of failure. The addition of steel fibers in a plain concrete mix helps to bridge and restrict the cracks formed in the brittle concrete under applied loads, and enhances the ductility of the concrete. In this research an attempt was made to investigate the behavior and the ultimate shear strength of hooked end steel fiber reinforced concrete beams without traditional shear reinforcement. Four simply-supported reinforced concrete beams with a shear span-to-depth ratio of about 3.0 were tested under two-point loading up to failure. Steel fibers volumetric fractions that used were 0.0, 0.5, 0.75 and 1.0%. Test results indicated that using 1.0% volume fraction of hooked steel fiber led to exclude shear failure and enhanced the use of steel fibers as shear reinforcement in concrete beams. The results also showed that a concrete beam with hooked steel fiber provided higher post-flexural-cracking stiffness, an increase in the shear capacity and energy absorption and an increase in the maximum concrete and steel reinforcement strains.
Batson, G., Jenkins, E. and Spatney, R. “Steel fibers as shear reinforcement in beams.” ACI Journal Proceedings, 69(10) (1972): 640-644.
Mansur, MA, Ong, KCG, Paramsivam, P. “Shear strength of fibrous concrete beams without stirrups.” Journal of Structural Engineering 121(1) (1986): 2066–2079. doi.org/10.1061/(ASCE)0733-9445(1986)112:9(2066).
Ashour, S. A., Hasanain, G. S., and Wafa, F. F. “Shear behavior of high-strength fiber reinforced concrete beams.” ACI Structural Journal, 89(2) (1992): 176-184.
Swamy, R. N., Jones, R., and Chiam, A. T. P. “Influence of steel fibers on the shear resistance of lightweight concrete i- beams.” ACI Structural Journal, 90(1) (1993): 103-114.
Shin, S.-W., Oh, J.-G., and Ghosh, S. K. “Shear behavior of laboratory-sized high-strength concrete beams reinforced with bars and steel fibers.” ACI Special Publication, 142 (1994): 181-200.
Kwak, YK, Eberhard, MO, Kim, WS. “Shear strength of steel fiber reinforced concrete beams without stirrups.” ACI Structural Journal, 99(1) (2002): 530–538.
Tantary, M. A., Upadhyay A., and Prasad J. “Influence of Steel Fibers on the Shear Strength of Concrete.” Journal of Engineering, Computers & Applied Sciences, 1(10), (Oct. 2012): 88-92.
Araújo, D. L., Nunes, F. G. T., Filho, R. D. T. and Andrade, M. Al. S. “Shear strength of steel fiber-reinforced concrete beams.” Acta Scientiarum. Technology Maringá, 36(3), (July-Sept., 2014): 389-397.
Shoaib, A., Lubell, A. S., and Bindiganavile, V. S. “Size effect in shear for steel fiber-reinforced concrete members without stirrups.” ACI Structural Journal, 111(5), (September-October 2014): 1081-1090. DOI: 10.14359/51686813.
Vairagade, L. and Bhedi, V. M. “Comparison of strength between steel fiber reinforced concrete and conventional concrete.” Track 3, International Journal on Recent and Innovation Trends in Computing and Communication, 3(2), (Feb 2015): 5-10.
Babar, V. T., Joshi, P. K., and Shinde, D. N. “Shear strength of steel fiber reinforced concrete beam without stirrups.” Int J Adv Engg Tech/ VI(II), (April-June 2015): 15-18.
Arslan, G., Keskin, R. S. O., and Ulusoy, S. “An Experimental Study on the Shear Strength of SFRC Beams without Stirrups.” Journal of Theoretical and Applied Mechanics, 55(4), (2017): 1205-1217.
Sudheer R. L , Ramana Rao. N.V, and Gunneswara Rao, T.D “A Study on Effect of Steel Fiber in Shear Critical Regions of HSC Beams - Variaiton with a/d Ratio.” International Journal of Scientific & Engineering Research, 8(6), (June 2017): 548-553.
Yoo, D.-Y. , Yang, J.-M. “Effects of stirrup, steel fiber, and beam size on shear behavior of high strength concrete beams.” Cement and Concrete Composites 87(1) (2018): 137–148. DOI: 10.1016/j.cemconcomp.2017.12.010.
Morsy, A. M. and El-Raki, T. M. “Shear Behavior of Steel Fiber Reinforced Concrete Wide Beams without Stirrups.” J Civil Environ Eng 8(1), (2018): 292
Yang, J. –M., Kim, J. –K., and Yoo, D. –Y. “Flexural and shear behaviour of high-strength SFRC beams without stirrups.” Magazine of Concrete Research, Ahead of Print, (2018): 1–16.
Ananthi, G. B. G., Sathick, A. J., and Abirami, M. “Experimental Investigation on Shear Behavior of Fiber Reinforced Concrete Beams Using Steel Fibers.” International Journal of Structural and Construction Engineering, 12(6), (2018): 553-556.
ACI Committee 318 (2014) Building Code Requirements for Structural Concrete ((ACI 318-14) and Commentary (318R-14)). Farmington Hills, MI: American Concrete Institute.
Iraqi Standard Specification No 5, “Portland Cement (I.O.S. 5/1984) “, Baghdad, 1984.
Iraqi Standard Specification No 45, “Natural Sources for aggregate that is Used in Concrete and Construction”, Baghdad, 1984.
ASTM A820 / A820M-16, Standard Specification for Steel Fibers for Fiber-Reinforced Concrete, ASTM International, West Conshohocken, PA, (2016), www.astm.org. DOI: 10.1520/A0820_A0820M-16
ASTM A615 / A615M-16, “Standard Specification for Deformed and Plain Carbon-Steel Bars for Concrete Reinforcement.” ASTM International, West Conshohocken, PA. (2016), www.astm.org. DOI: 10.1520/a0615_a0615m-16.
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