JOURNAL BROWSE
Search
Advanced SearchSearch Tips
Flexural strengthening of RC Beams with low-strength concrete using GFRP and CFRP
facebook(new window)  Pirnt(new window) E-mail(new window) Excel Download
 Title & Authors
Flexural strengthening of RC Beams with low-strength concrete using GFRP and CFRP
Saribiyik, Ali; Caglar, Naci;
 Abstract
The Turkish Earthquake Code was revised in 1998 and 2007. Before these Codes, especially 1998, reinforced concrete (RC) beams with low flexural and shear strength were widely used in the building. In this study, the RC specimens have been produced by taking into consideration the RC beams with insufficient shear and tensile reinforcement having been manufactured with the use of concrete with low strength. The performance of the RC specimens strengthened with different wrapping methods by using of Carbon Fibre Reinforced Polymer (CFRP) and Glass Fibre Reinforced Polymer (GFRP) composites have been examined in terms of flexural strength, ductility and energy absorption capacity. In the strengthening of the RC elements, the use of GFRP composites instead of CFRP composites has also been examined. For this purpose, the experimental results of the RC specimens strengthened by wrapping with CFRP and GFRP are presented and discussed. It has been concluded that although the flexural and shear strengths of the RC beams strengthened with GFRP composites are lower than those of beams reinforced with CFRP, their ductility and energy absorption capacities are very high. Moreover, the RC beams strengthened with CFRP fracture are more brittle when compared to GFRP.
 Keywords
low-strength concrete;poor reinforcement;carbon fiber;glass fiber;flexural strengthening;ductility;
 Language
English
 Cited by
 References
1.
Abdel-Kareem, A.H. (2014), "Shear strengthening of reinforced concrete beams with rectangular web openings by FRP Composites", Adv. Concrete Constr., 2(4), 281-300. crossref(new window)

2.
Adhikary, B.B. and Mutsuyoshi, H. (2004), "Behavior of concrete beams strengthened in shear with carbonfiber sheets", J. Compos. Construct., 8(3), 258-264. crossref(new window)

3.
ACI Committee 440F (2002), Guide for the design and construction of externally bonded FRP systems for strengthening concrete structures.

4.
Almusallam, T.H. (2006), "Load-deflection behavior of RC beams strengthened with GFRP sheets subjected to different environmental conditions", Cement Concrete Compos., 28(10), 879-889. crossref(new window)

5.
Arslan, M.H. and Korkmaz, H.H. (2012), "What is to be learned from damage and failure of reinforced concrete structures during recent earthquakes in Turkey?", Eng. Fail. Anal., 14(1), 1-22.

6.
Baggio, D., Soudki, K. and Noel, M. (2014), "Strengthening of shear critical RC beams with various FRP systems", Constr. Build. Mater., 66, 634-644. crossref(new window)

7.
Camata, G., Spacone, E. and Zarnic, R. (2007), "Experimental and nonlinear finite element studies of RC beams strengthened with FRP plates", Compos. Part B, 38, 277-288. crossref(new window)

8.
Celebi, E., Aktas, M., Caglar, N., Ozocak, A., Kutanis, M., Mert, N. and Ozcan, Z. (2012), "October 23, 2011 Turkey/Van-Ercis earthquake: structural damages in the residential buildings", Nat. Hazard, 65, 2287-2310.

9.
Diagana, C., Li, A., Gedalia, B. and Delmas, Y. (2003), "Shear strengthening effectiveness with CFF strips", Eng. Struct., 25, 507-516. crossref(new window)

10.
Dogangun, A. (2004), "Performance of reinforced concrete buildings during the May 1, 2003 Bingol Earthquake in Turkey", Eng. Struct., 26(6), 841-856. crossref(new window)

11.
Esfahani, M., Kianoush, M. and Tajari, A. (2007), "Flexural behavior of reinforced concrete beams strengthened by CFRP sheets", Eng. Struct., 29, 2428-2444. crossref(new window)

12.
http://tur.sika.com (2010)

13.
Khalifa, A. and Nanni, A. (2002), "Rehabilitation of rectangular simply supported RC beams with shear deficiencies using CFRP composites", Constr. Build. Mater., 16, 135-146. crossref(new window)

14.
Khalifa, A., Gold, W.J., Nanni, A. and Abdel Aziz, M.I. (1998), "Contribution of externally bonded FRP to shear capacity of flexural members", J. Compos. Constr, ASCE, 2(4), 195-203. crossref(new window)

15.
Norris, T., Saadatmanesh, H. and Ehsani, M.R. (1997), "Shear and flexural strengthening of R/C beams with carbon fiber sheets", J. Struct. Eng., 123(7), 903-911. crossref(new window)

16.
Obaidat, Y.T., Heyden, S., Dahlblom, O., Abu-Farsakh, G. and Abdel-Jawad, Y. (2011), "Retrofitting of reinforced concrete beams using composite laminates", Constr. Build. Mater., 25(2), 591-597 crossref(new window)

17.
Rahimi, H. and Hutchinson, A. (2001), "Concrete beams strengthened with externally bonded FRP plates", J. Compos. Constr., 5(1), 44-56. crossref(new window)

18.
SIS Canada (2001), Strengthening reinforced concrete structures withexternally-bonded fiber reinforced polymers, Design Manual, No. 4.

19.
Saadatmanesh, H. and Ehsani, M.R. (1991), "RC beams strengthened with GFRP plates, I: Experimental study", J. Eng. Struct., ASCE, 117(11), 3417-3433. crossref(new window)

20.
Saribiyik, M., Sumer, M., Firat, S. and Aydin, F. (2003), "Investigation of Concrete Quality of Collapsed-Heavily Damaged Structures During the Marmara Earthquake", 8th International Conference on Inspection, Appraisal, Repairs, and Maintenance of Structures, Singapore, December.

21.
Sen, T. and Jagannatha, H.N. (2013), "Strengthening of RC beams in flexure using natural jute fibre textile reinforced composite system and its comparative study with CFRP and GFRP strengthening systems", International Journal of Sustainable Built Environment, 2, 41-55 crossref(new window)

22.
Sezen, H., Whittaker A.S., Elwood, K.J. and Mosalam, K.M. (2003), "Performance of reinforced concrete buildings during the August 17, 1999 Kocaeli, Turkey earthquake, and seismic design and construction practice in Turkey", Eng. Struct., 25(1), 103-114. crossref(new window)

23.
Sundarraja, M.C. and Rajamohan, S. (2009), "Strengthening of RC beams in shear using GFRP inclined strips - An experimental study", Constr. Build. Mater., 23, 856-864. crossref(new window)

24.
Taljsten, B. and Elfgren, L. (2000), "Strengthening concrete beams for shear using CFRP-materials: evaluation of different application methods", Compos. Part B: Eng., 31, 87-96.

25.
Triantafillou, T.C. (1998), "Shear strengthening of reinforced concrete beams using epoxy-bonded FRP composites", ACI Struct. J., 95(2), 107-115.

26.
Yoshimura, K., Kikuchi, K., Kuroki, M., Ozawa, K. and Masuda, Y. (2000), "Experimental study on seismic behavior of RC short columns strengthened by carbon fiber sheets composite and hybrid structures", Proceedings of the 6th ASCCS International Conference on Steel-Concrete Composite Structures, Los Angeles, California.

27.
Zhang, Z. and Hsu, C.T. (2005), "Shear strengthening of reinforced concrete beams using carbon-fiber-reinforced polymer laminates", J. Compos. Constr., ASCE, 9(2), 158-169. crossref(new window)