10.24423/EngTrans.1664.20220303
Experimental Investigation of Two-Way Concrete Slabs Reinforced by Perforated Steel Plates Under Concentrated Load
This research experimentally investigates the effect of using the perforated steel plate instead of steel bars as a reinforcing system in two-way concrete slabs. The study consists of casting four slabs using self-compacting concrete. Three slabs are reinforced by a perforated steel plate and one slab is reinforced by traditional bar reinforcement. The amount of steel in both types of reinforcement is equal. The slabs are tested under a monotonic concentrated load at their middle point. The results show a significant enhancement in behavior. The ultimate load increased about 43% to 76%, depending on the size of the openings. Moreover, the final crack width in all slabs reinforced by a perforated steel plate was smaller than in the slab reinforced by a traditional steel bar. The results of this study may be used in future research to introduce a method that will lead to an improvement in the overall behavior of two-way concrete slabs.
Copyright © The Author(s). This is an open-access article distributed under the terms of the Creative Commons Attribution-ShareAlike 4.0 International (CC BY-SA 4.0).
References
Zhang J. W., Teng J. G., Wong Y. L., Lu Z.T., Behavior of two-way RC slabs externally bonded with steel plate, Journal of Structural Engineering, 127: 390–397, 2001, doi: 10.1061/(ASCE)0733-9445(2001)127:4(390).
Ebead U., Marzouk H., Strengthening of two-way slabs using steel plates, ACI-Structural Journal, 99-S3(1): 23–31, 2002, doi: 10.14359/11032.
Rasheed L. Sh., Al-Azawi, T.K., Experimental analysis of reinforced concrete slabs strengthened with steel plates, The Iraqi Journal for Mechanical and Material Engineering, 13(1): 1–12, 2013.
Metwally I.M., Three-dimensional finite element analysis of reinforced concrete slabs strengthened with epoxy-bonded steel plates, Advances in Concrete Construction, 2(2): 91–108, 2014, doi: 10.12989/acc.2014.2.2.091.
Elbakry H.M.F., Allam S.M., Punching strengthening of two-way slabs using external steel plates, Alexandria Engineering Journal, 54(4): 1207–1218, 2015, doi: 10.1016/j.aej.2015.09.005.
Okamura H., Ouchi M., Self-compacting concrete, Journal of Advanced Concrete Technology, 1: 5–15, 2003, doi:b10.3151/jact.1.5.
ACI Committee 237, Self-Consolidating Concrete, American Concrete Institute, Farmington Hills, MI 48331, 2007.
ACI Committee 318, ACI 318 R-19: Building Code Requirements for Structural Concrete, American Concrete Institute, Farmington Hills, MI 48331, 2019.
Alwash N.A., Habeeb G. M., Naser F.H., Shear behavior of light weight concrete slab panels reinforced with CFRP bars, The Iraqi Journal for Mechanical and Material Engineering, Conference Issue: First International Engineering Conference 2016, University of Babylon, Iraq, pp. 367–385, 2016.
DOI: 10.24423/EngTrans.1664.20220303