Flexural strengthening of reinforced concrete beams using valid strengthening techniques

• Autorzy: Bashandy A. A.
• Języki publikacji: EN

Abstrakty

EN

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.

Słowa kluczowe

EN

reinforced concrete beam; strengthening; concrete layer; steel plate; load bearing capacity

PL

belka żelbetowa; wzmacnianie; warstwa betonowa; siatka zbrojąca; płyta stalowa; nośność

• Wydawca: Komitet Inżynierii Lądowej i Wodnej PAN ; Politechnika Warszawska, Wydział Inżynierii Lądowej
• Czasopismo: Archives of Civil Engineering
• Rocznik: 2013
• Tom: Vol. 59, nr 3
• Strony: 275--293
• Opis fizyczny: Bibliogr. 12 poz., il., tab.

Twórcy

autor

Bashandy A. A.

• Civil Engineering Department, Faculty of Engineering Science, Sinai University, Egypt

Bibliografia

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