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Article

Strengthening of RC Slabs with Symmetric Openings Using GFRP Composite Beams

1
School of Architecture & Civil Engineering, Kyungpook National University, Daegu 702-701, Korea
2
School of Architecture, Chosun University, Philmundaero, Dong-Gu, Gwangju 501-759, Korea
*
Author to whom correspondence should be addressed.
Polymers 2013, 5(4), 1352-1361; https://doi.org/10.3390/polym5041352
Received: 28 October 2013 / Revised: 25 November 2013 / Accepted: 27 November 2013 / Published: 3 December 2013
(This article belongs to the Special Issue Fiber-Reinforced Polymer Composites in Structural Engineering)
This paper describes the results of experimental testing of glass fiber reinforced plastic (GFRP) composite beam strengthened reinforced concrete (RC) slabs with two symmetrical openings. Specimens, one-half scale, have been designed and fabricated to reflect the most common RC bathroom slab used in school buildings. The specimen had dimensions of 2000 mm (width) × 150 mm (thickness) × 3000 mm (length) were used with the two openings of 300 mm × 400 mm. The aim of this study is to investigate the most effective strengthening method using GFRP composite beams in slabs with openings for enhancing the load-carrying capacity and stiffness. Test results showed that the strengthened slabs seems to increase the load-carrying capacity by 29%, 21% and 12% over that of the control specimen for diagonal, parallel and surround strengthening respectively. Furthermore, test results showed that the diagonal-strengthened system is one of the most effective methods for strengthening an RC slab with openings in terms of load-carrying capacity, stiffness and crack patterns. View Full-Text
Keywords: RC slab; RC-strengthening; GFRP composite beam; crack pattern; failure mode RC slab; RC-strengthening; GFRP composite beam; crack pattern; failure mode
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MDPI and ACS Style

Choi, Y.; Park, I.H.; Kang, S.G.; Cho, C.-G. Strengthening of RC Slabs with Symmetric Openings Using GFRP Composite Beams. Polymers 2013, 5, 1352-1361. https://doi.org/10.3390/polym5041352

AMA Style

Choi Y, Park IH, Kang SG, Cho C-G. Strengthening of RC Slabs with Symmetric Openings Using GFRP Composite Beams. Polymers. 2013; 5(4):1352-1361. https://doi.org/10.3390/polym5041352

Chicago/Turabian Style

Choi, Yeol, Ik H. Park, Sang G. Kang, and Chang-Geun Cho. 2013. "Strengthening of RC Slabs with Symmetric Openings Using GFRP Composite Beams" Polymers 5, no. 4: 1352-1361. https://doi.org/10.3390/polym5041352

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