Jump to ContentJump to Main Navigation
Show Summary Details
More options …

Archives of Civil Engineering

The Journal of Polish Academy of Sciences

4 Issues per year


SCImago Journal Rank (SJR): 0.251
Source Normalized Impact per Paper (SNIP): 0.521

Open Access
Online
ISSN
1230-2945
See all formats and pricing
More options …

Flexural Strengthening of Reinforced Concrete Beams Using Valid Strengthening Techniques

Alaa A. Bashandy
Published Online: 2013-09-06 | DOI: https://doi.org/10.2478/ace-2013-0015

Abstract

This study aims to evaluate the efficiency of strengthening reinforced concrete beams using some valid strengthening materials and techniques. Using concrete layer, reinforced concrete layer and steel plates are investigated in this research. Experiments on strengthening beam samples of dimensions 100x150x1100mm are performed. Samples are divided in to three groups. Group “A” is strengthened using 2cm thickness concrete layer only (two types). Group “B” is strengthened using 2cm thickness concrete layer reinforced with meshes (steel and plastic). Group “C” is strengthened using steel plates. The initial cracking load, ultimate load and crack pattern of tested beams are illustrated. The experimental results show that for group A and B, the ultimate strength, stiffness, ductility, and failure mode of RC beams, with the same thickness strengthening layer applied, will be affected by the mesh type, type of concrete layer. While for group C, these parameters affected by the fixation technique and adhesion type.

Keywords: strengthening; Reinforcing mesh; Steel plate; Reinforced; Concrete; Beam

References

  • 1. Dehwah, H.A.F.; Basunbul, I.A.; Maslehuddin, M.; Al-Sulaimani, G.J.; and Baluch, M.H., „Durability Performance of Repaired Reinforced Concrete Beams,” ACI Mater. J., Vol. 91, No. 2, 1994, pp. 167-172.Google Scholar

  • 2. Hussain, M.; Sharif, A.; Basunbul, I. A.; Baluch, M. H.; and Al-Sulaimani, G.J., „Flexural Behavior of Pre-cracked Concrete Beams Strengthened Externally by Steel Plates,” ACI Structural Journal, Vol. 92, No. 1, 1995, pp. 14-22.Google Scholar

  • 3. Hamoud, A.; Islem, A.; Maslehuddin, M.; Jamil Ghazi; and Baluch, M., „Durability Performance of Repaired Concrete Beams,” ACI Materials Journal, Vol. 91, No. 2, 1994.Web of ScienceGoogle Scholar

  • 4. Basunbul, A.A.; Gubati, G.J.; Al-Sulaimani; and Baluch, M.H., „Repaired Reinforced Concrete Beams,” ACI Materials Journal, Title No. 87-M37, 1990, pp. 348-354.Google Scholar

  • 5. Fahmy, E.H., Shaheen, Y.B.I., and Korany, Y.S., „Repairing Reinforced Concrete Beams by Ferrocement,” Journal of Ferrocement, Vol. 27, No. 1, Jan. 1997, pp. 19-32.Google Scholar

  • 6. Fahmy, E.H.; Shaheen, Y.B.I.; and Korany, Y.S., „Use of Ferrocement Laminates for Repairing Reinforced Concrete Slabs,” Journal of Ferrocement, Vol. 27, No. 3, July 1997, pp. 219-232.Google Scholar

  • 7. Bonacci, J.F., and Maalej, M., „Behavioral Trends of RC Beams Strengthened with Externally Bonded FRP,” Journal of Composites for Construction, Vol. 5, No. 2, 2001, pp.102-113.Google Scholar

  • 8. Al-Amery, R., and El-Mahaidi, R., „Coupled Flexural-Shear Retrofi tting of RC Beams Using CFRP Straps,” Composite Structures, Vol. 74, 2006, pp.457-464.Google Scholar

  • 9. Esfahani, M.R.; Kianoush, M.R.; and Tajari, A.R., „Flexural Behavior of Reinforced Concrete Beams Strengthened by CFRP Sheets,” Engineering Structures, Vol. 29, 2007, pp.2428-2444.Google Scholar

  • 10. Anil, O., „Strengthening of RC T-section Beams with Low Strength Concrete Using CFRP Composites Subjected to Cycle Load,” Constr. and Building Mat., Vol. 22, 2008, pp.2355-2368.Google Scholar

  • 11. Bass, R.A.; Carrasquillo, R.L.; and Jirsa, J.O., „Inter Face Shear Capacity of Concrete Structures Used in Strengthening Structures,” PMFSEL Report, No. 85-4, University of Texas, Austin, Texas, USA, 1985.Google Scholar

  • 12. SIKA Corporation, „Sika Carbodur Structural Strengthening System - Engineering Guidelines for Design and Application,” Sika Corp., Lyndhurst, NJ, 1999. Google Scholar

About the article

Received: 2013-04-09

Revised: 2013-08-15

Published Online: 2013-09-06

Published in Print: 2013-09-01


Citation Information: Archives of Civil Engineering, ISSN (Online) 1230-2945, DOI: https://doi.org/10.2478/ace-2013-0015.

Export Citation

© Polish Academy of Sciences. This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License. BY-NC-ND 3.0

Comments (0)

Please log in or register to comment.
Log in