1 Civil Engineering Department, Erbil Technical Engineering College, Erbil Polytechnic University Erbil, Iraq.

2 Civil Engineering Department, Erbil Technical Engineering College, Erbil Polytechnic University Erbil, Iraq.


A computational analysis is presented to predict the ultimate and cracking shear strength of steel fiber reinforced concrete slabs. Different models are suggested considering the effect of concrete compressive and tensile strength, amount of flexural reinforcements, yield strength of the reinforcement bars and steel fiber properties (volume percent, aspect ratio, and type of steel fibers). The predicted results are compared with the experimental data found in literature and found good agreement.

[1] J. Moe, “Shearing strength of reinforced slabs on footings under concentrated loads,” Portland Cement Association, Research and Development Laboratories, April 1961. [2] ACI – Committee 544; “State of Art Report on Fiber Reinforced Concrete,” sp-81 ACI Publication, Detroit, Mechigan, pp. 411-452, 1984. [3] J. K. Ibrahim, “Punching shear strength of steel fiber reinforced concrete slabs,” M.Sc. Thesis, University of Baghdad, Iraq, 1984
[4] D. Yitizaki, “Punching strength of reinforced concrete slabs,” ACI Journal, pp. 527-540, May, 1966. [5] M. Herzog, “New evaluation of earlier punching shear test,” Concrete Research, December, pp. 448-450, 1970. [6] M. A. Al. Ani, “Influence of steel fiber on punching shear strength of Reinforced concrete slabs,” M.Sc. Thesis, University of Baghdad, Iraq, 1985. [7] N. K. Oukaili and T. S. Salman, “Punching shear strength of reinforced concrete flat plates with openings,” Journal of Engineering, Vol.20; No.1, pp. 1-20, January 2014. [8] A. H. N. Al-Mamoori, “Investigation the punching shear behavior of reinforced concrete slab-column connection using carbon fiber reinforced polymers,” Al-Qadisiya Journal for Engineering Science, Vol.8, No.1, pp. 38-58, 2015. [9] K. F. Sarsam and H. F. Hassan, “Punching shear failure characteristics of flat slabs using reactive and modified powder concrete with steel fiber,” Journal of Engineering and Development, Vol.17, No.15, pp. 124- 140, Nov., 2013. [10] H. Ju, N.R. Cheon, D. H. Lee, J. V. Oh, J. H. Hwang, and K. S. Kim, “Consideration on punching shear strength of steel fiber reinforced concrete slabs,” Advanced in Mechanical Engineering; Vol.7, No.5, pp. 1-12, 2015. [11] B. Mu and C. Meyer, “Bending and punching shear strength of Fiber-Reinforced Glass concrete slabs,” Nov. 2002. [12] J. B. Hanai and K. M. A. Holanda, “Similarities between punching and shear strength of steel fiber reinforced concrete (SFRC) slabs and beams,” Ibracon Structures and Materials Journal, Vol.1 No.1, pp. 1-16, March, 2008. [13] V. B. Jatale and L. G. Kalurkar, “Punching shear high strength steel fiber reinforced concrete slabs,” International Journal of Engineering Research and Applications; Vol.3, Issue 6, pp. 269-275, Nov-Dec., 2013. [14] T. A. Q. Al-Shaikhli, “Effect of steel fiber on punching shear strength on non-rectangular reactive powder concrete slabs,” International Journal of Structural and Civil Engineering Research, Vol.5, No.2, pp.130-135, May 2016. [15] K. K. Choi, M. M. R. Taha, H. H. Park and A. K. Maji, “Punching shear strength of interior concrete slabcolumn connections reinforced with steel fibers,” Cement and Concrete Composites, Vol.29, pp. 409-420, 2007. [16] L. F. Maya, M. F. Ruiz, A. Muttoni and S. J. Foster, “punching shear strength of steel fiber reinforced concrete slabs,” Engineering Structures, Vol.40, pp.83-94, 2012. [17] K. S. Rajab “Study punching shear of steel fiber reinforced self compacting concrete slabs by Nonlinear analysis,” International Journal of Civil, Environmental, Structural, Construction and Architectural Engineering, Vol.17, No.9, pp. 624-635, 2013. [18] M. Y. Cheng and G. J. P. Montensions, “Evaluation of steel fiber reinforcement for punching shear resistance in slab-column connections part I: Monotonically Increased load,” ACI-Structural Journal, Vol.107, No.1, Jan-Feb., 2010. [19] S. R. Magdum and S. A. Veerabhadrannavap, “Finit Element Analysis of Conventional Reinforced concrete and steel fiber Reinforced concrete in slab-column joint,” International Journal of Research in Engineering and Technology, Vol.5, Issue 10, pp. 74-81, Oct., 2016. [20] H. Higashiyama, A. Ota and M. Mizukoshi, “Design equation for punching shear capacity of SFRC slabs,” International Journal of Concrete Structures and Materials, Vol.5, No.1, pp. 35-42, June, 2011. [21] L. N. Minh, M. Rovnak, J. J. Quoc and K. N. Kin, “Punching shear Resistance of steel fiber reinforced concrete flat slabs,” Procedia Engineering, Research gate, pp1-8, Dec. 2011. [22] E. Mondo, “Shear Capacity of steel fiber reinforced concrete beams without conventional shear reinforcement,” M.Sc. Thesis, Department of Civil and Architectural Engineering, Division of structured Design and Bridges, Royal Institute of Technology, pp.113, Stockholm, Sweden, 2011. [23] H. A. A. Al-Quraishi, “Punching shear behavior of UHPC flat slabs,” Ph.D. Thesis; Faculty of Civil and Environmental Engineering, University of Kassel, Kassel, Germany, 2014. [24] R. N. Swamy and Ali SAR, “Punching shear behavior of reinforced slab-column connections made with steel fiber concrete,” ACI-Journal, Vol. 79, No.6, pp. 392-406, 1982
[25] D.D. Theodorakopoulos and N. Swamy, “Contribution of steel fibers to the strength characteristics of light weight concrete slab-column connections falling in punching shear,” ACI- structural Journal, Vol. 90, No.4, pp. 342-355, 1993. [26] M. It. Harajli, D. Maalouf and H. Khatib, “Effect of fibers on the punching shear strength of slab-column connections,” Cement and Concrete Composite, vol. 17, pp.161-170, 1995. [27] S. D. B. Alexander and S. H. Simmonds, “Punching shear tests of concrete slab-column joints containing fiber reinforcement,” ACI- structural Journal; Vol. 89, No.4, pp. 425-432, 1992. [28] P .J. McHarg, W. D. Cook, D. Mitchell and Yoon Young-Soo, “Benefits of concentrated slab reinforcement and steel fibers on performance of slab-column connections,” ACI-Structural Journal, Vol. 97, No.2, pp. 225-234, 2000. [29] R. Suter and L. Moreillan, “Punching shear strength of high performance fiber reinforced concrete slabs,” 3 rd FIB international congress, Washington, USA, 2010. [30] A. Yassen “Punching shear strength of steel fiber high strength reinforced concrete slabs,” Msc. Thesis, University of Salahaddin, College of Engineering, Erbil, Iraq; Dec. 2006. [31] R. Naranayan and I. Y. S. Darwish, “Punching shear tests on steel-fiber-reinforced micro-concrete slabs,” Mag Concrete Research, Vol. 39, No. 138, pp. 42-50, 1987. [32] X. Wang, W. Tian, Z. Huang, M. Zhou and X. Zhao, “Analysis on Punching shear behavior of the raft slab Reinforced with steel fibers,” Advanced concrete and structure; vol. 400; 2009, pp. 335-340. [33] M. Hirasawa, K. Ito and K. Takagi, “Punching shear strength at steel fiber reinforced concrete slabs,” Proceedings of the 37th Annual Conference of the JSCE, Vol. 124, pp. 247-258, 1982. [34] A. M. Shaahan and H. Gesund, “Punching shear strength of steel fiber reinforced concrete flat slabs,” ACI structural Journal, Vol. 91, No.3, pp.406-414, 1994. [35] M. Wakabayashi and T. Maruyama, “A study on punching shear Resistance of reinforced concrete slabs by using steel fiber,” Proceedings of the 57th Annual conference of the JSCE, Vol. 131, 2002. [36] G. S. Basman, “Strength of reinforced concrete slabs for punching shear stress,” M.Sc. Thesis, University of Salahaddin, College of Engineering. Erbil, Iraq, 1989. [37] D. J. Hannant, “Fiber cements and fiber concretes,” John Wiley & Sons, publication, New York, USA, 1978. [38] R. N. Swamy, R. S. Mangar and K. C. U. S. Roa, K. C. U. S. “The Mechanics of fiber reinforcement of cement materials,” American Concrete Institute, Detroit, Sp-44, pp. 1-28, 1974. [39] R. Narayanan and S. S. K. Palanjlain, “A space truss model for fiber concrete beams in torsion,” The structural Engineer, vol. 63B, No.1, March, pp. 4-18, 1985. [40] R. Narayanan and A. S. K. Palanjain, “Effect of fiber addition on concrete strength,” Indian Concrete Journal, Vol. 58, No. 4, pp.100-103, April 1984. [41] ACI 318-14; “Building Code Requirements for structural concrete”; American Concrete Institute; USA; pp. 524, 2014