Effect of Replacing the Main Reinforcement by Sheet Steel Plate in Reinforced Concrete Beams

Khalid Ibrahim; Ahmed A. Mansor; Bilal J.  Noman; Wisam D.  Salman; Ahlam S.  Mohammed

doi:10.24237/djes.2021.14312

Authors

Khalid Ibrahim Department of Civil Engineering, University of Diyala, 32001 Diyala,
Ahmed A. Mansor
aamansor@engineering.uodiyala.edu.iq
Department of Civil Engineering, University of Diyala, 32001 Diyala,
Bilal J. Noman Department of Civil Engineering, University of Baghdad, Baghdad, Iraq
Wisam D. Salman Department of Civil Engineering, University of Diyala, 32001 Diyala, Iraq
Ahlam S. Mohammed Department of Civil Engineering, University of Technology, Baghdad, Iraq

Keywords:

Flexural reinforcement, Steel plates, Yield load, Ultimate load, Crack load

Abstract

In recent years, new methods have developed utilizing steel plates instead of deformed steel bar reinforcement in the concrete beams. This paper presents the utilization of a new proposed approach for replacing the main flexural reinforcement concrete beams by steel checker plates of (6mm) thickness. Four reinforced concrete beams were cast and tested under two-point load. All beams had the same cross-sectional area of reinforcement and the dimensions of 210 cm in length, 35 cm in height and 25cm in width. The result show there was a reduction in crack load, yield load, and ultimate load of steel plate as compared to steel bar, Whereas increased with increasing cross-sectional area of the steel. Once, the increment in crack load and yield load of steel plate were 25.5% and 16,67% more than steel bar whereas the same increment was found in ultimate load for both steel bar and steel plate. The measured crack load and ductility for steel plate was 16.7% more than steel bar when increasing cross-sectional area of steel. The deflection past of failure for steel plate has a considerable deflection before failure than steel bar. Finally, the observations show cracks have been much wider and less in range for all steel plate samples in comparison with the steel bar.

Downloads

Download data is not yet available.

References

Alfeehan, A. (2014). Strengthening of RC beams by external steel plate using mechanical connection technique. Journal of Engineering and Development, 18(1), 202-215.

Thamrin, R., & Sari, R. P. (2017). Flexural capacity of strengthened reinforced concrete beams with web bonded steel plates. Procedia engineering, 171, 1129-1136. DOI: https://doi.org/10.1016/j.proeng.2017.01.474

Mansor, A. A., Ibrahim, A. M., & Hamood, M. J. (2018). Study the Response of Bubbled Wide Reinforced Concrete Beams with Different Shear Steel Plate Spacing. Diyala Journal of Engineering Sciences, 11(2), 1-13.

Mansor, A. A., Mohammed, A. S., & Mansor, M. A. (2020). Reinforced Concrete Beams Capacity with Various Concrete Compressive Strengths. In IOP Conference Series: Materials Science and Engineering (Vol. 978, No. 1, p. 012036). IOP Publishing. DOI: https://doi.org/10.1088/1757-899X/978/1/012036

Mansor, A. A., Mohammed, A. S., & Salman, W. D. (2020). Effect of longitudinal steel reinforcement ratio on deflection and ductility in reinforced concrete beams. In IOP Conference Series: Materials Science and Engineering (Vol. 888, No. 1, p. 012008). IOP Publishing. DOI: https://doi.org/10.1088/1757-899X/888/1/012008

Hadi, M. N., Sarhan, M. M., & Teh, L. H. (2018). Behavior of Concrete Beams Reinforced with Steel Plates. ACI Structural Journal, 115(5), 1307-1315. DOI: https://doi.org/10.14359/51702445

Zuhdiy, Z. S., & Abbas, A. L. (2021). Comparative Study of Structural Behaviour of Reinforced Concrete Box Girder with Different Numbers of Cells. In IOP Conference Series: Materials Science and Engineering (Vol. 1076, No. 1, p. 012110). IOP Publishing. DOI: https://doi.org/10.1088/1757-899X/1076/1/012110

ASTM C150/C150M-16e1. (2016). Standard Specifications for Portland Cement. West Conshohocken, PA: American Society for Testing and Materials.

ASTM C192 / C192M-19. (2019), Standard Practice for Making and Curing Concrete Test Specimens in the Laboratory. West Conshohocken, PA: American Society for Testing and Materials.

ASTM, C39. (2003). Standard specification for testing method for compressive strength of cylindrical concrete specimens. Philadelphia, PA: American Society for Testing and Materials.

Hussain, L. N., Mohammed, A. S., & Mansor, A. A. (2020). Finite Element Analysis Of Large-Scale Reinforced Concrete Shell Of Domes. Journal of Engineering Science and Technology, 15(4), 2712-2729.

Mansoor, A. A., Salman, W. D., & Abbas, A. L. (2006). Finite Element Analysis of Reinforced Concrete Deep Beams Strengthened in Shear with CFRP.

Hadi, N. S., Oleiwi, S. M., Salman, W. D., Ibrahim, A. M., & Mansor, A. A. (2020). Modified geopolymer paste adhesive bond material for near surface mounted strengthening technique. In IOP Conference Series: Materials Science and Engineering (Vol. 888, No. 1, p. 012053). IOP Publishing. DOI: https://doi.org/10.1088/1757-899X/888/1/012053

Salman, W. D., & Mansor, A. A. (2021). Fibrous geopolymer paste composites for near-surface-mounted strengthening of reinforced concrete beams in flexure. Case Studies in Construction Materials, 14, e00529. DOI: https://doi.org/10.1016/j.cscm.2021.e00529