Static and Cyclic Performance of HSC Beams with GFRP Laminates

Authors

  • Gopinathan Krishnamurthy Research Scholar Department of civil & Structural Engineering Annamalai University cHIDAMBARAM
  • Raghunath T N
  • Suguna K

Keywords:

cyclic, fibre, ductility, GFRP, laminate, strengthening

Abstract

This paper presents the experimental work conducted to examine the effectiveness of Glass Fibre Reinforced Polymer (GFRP) laminates on the performance of High Strength Concrete (HSC) beams under static loading and cyclic loading. For the experimental investigation, a total of fourteen beams of size 150mmm x 250mm in cross section with a total length of 3000mm were cast and tested. Two beams served as control beam and twelve beams were strengthened with three different configuration of GFRP laminates (Chopped Strand mat – CSM, Woven Roving – WR and Uni Directional Cloth – UDC) of 3mm and 5mm thickness. The study parameters considered for this research work included first crack load, deflection at first crack load, yield load, deflection at yield load, ultimate load, deflection at ultimate load, deflection ductility, deflection ductility ratio, energy ductility, energy ductility ratio, number of cracks and average spacing of cracks for high strength concrete beams with and without externally bonded GFRP laminates under static loading. Also, adequate data was obtained on the number of cycles, deflection, stiffness, crack width, number of cracks, average spacing of cracks, energy absorption and failure characteristics for high strength concrete beams with externally bonded GFRP laminates under cyclic loading. The results of the experiments carried out are presented and discussed in detail. The static and cyclic test results show that the beams strengthened with externally bonded GFRP laminates exhibit increased strength, enhanced flexural stiffness, sufficient ductility and composite action until failure.

 

Author Biography

Gopinathan Krishnamurthy, Research Scholar Department of civil & Structural Engineering Annamalai University cHIDAMBARAM

Research Scholar

Department of civil & Structural Engineering

References

Almusallam, Tarek H. "Load–deflection behavior of RC beams strengthened with GFRP sheets subjected to different environmental conditions." Cement and Concrete Composites 28.10 (2006): 879-889.

Tan, K. H., M. K. Saha, and Y. S. Liew. "FRP-strengthened RC beams under sustained loads and weathering." Cement and Concrete Composites 31.5 (2009): 290-300.

Esfahani, Mohammad Reza, M. R. Kianoush, and A. R. Tajari. "Flexural behaviour of reinforced concrete beams strengthened by CFRP sheets." Engineering structures 29.10 (2007): 2428-2444.

Mahjoub, Reza, and Seyed Hamid Hashemi. "Finite element analysis of RC beams strengthened with FRP sheets under bending." Australian Journal of Basic and Applied Sciences 4.5 (2010): 773-778.

Obaidat, Yasmeen Taleb, et al. "Retrofitting of reinforced concrete beams using composite laminates." Construction and Building Materials 25.2 (2011): 591-597.

Heffernan, P. J., and M. A. Erki. "Fatigue behavior of reinforced concrete beams strengthened with carbon fiber reinforced plastic laminates." Journal of Composites for Construction 8.2 (2004): 132-140.

Yu, Tianlai, et al. "Fatigue of concrete beams strengthened with glass-fiber composite under flexure." Journal of Composites for Construction 15.4 (2010): 557-564.

Shrivastava, Ravikant, Uttamasha Gupta, and U. B. Choubey. "Effect Of Cyclic Loading On Flexural Behaviour Of FRP Strengthened RC Beams: A Stability Point Approach." International Journal of Advanced Research in Engineering and Applied Sciences 2.6 (2013): 9-26.

Ferrier, Emmanuel, et al. "Fatigue-loading effect on RC beams strengthened with externally bonded FRP." Construction and Building Materials 25.2 (2011): 539-546.

Ekenel, Mahmut, and John J. Myers. "Fatigue performance of CFRP strengthened RC beams under environmental conditioning and sustained load." Journal of Composites for Construction 13.2 (2009): 93-102.

Downloads

Published

2016-04-16

How to Cite

Krishnamurthy, G., T N, R., & K, S. (2016). Static and Cyclic Performance of HSC Beams with GFRP Laminates. Asian Journal of Engineering and Technology, 4(2). Retrieved from https://ajouronline.com/index.php/AJET/article/view/3747

Issue

Vol. 4 No. 2 (2016): April 2016

Section

Articles

License

  • Papers must be submitted on the understanding that they have not been published elsewhere (except in the form of an abstract or as part of a published lecture, review, or thesis) and are not currently under consideration by another journal published by any other publisher.
  • It is also the authors responsibility to ensure that the articles emanating from a particular source are submitted with the necessary approval.
  • The authors warrant that the paper is original and that he/she is the author of the paper, except for material that is clearly identified as to its original source, with permission notices from the copyright owners where required.
  • The authors ensure that all the references carefully and they are accurate in the text as well as in the list of references (and vice versa).
  • Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Attribution-NonCommercial 4.0 International that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
  • Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
  • Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).
  • The journal/publisher is not responsible for subsequent uses of the work. It is the author's responsibility to bring an infringement action if so desired by the author.