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International Journal of Polymer Science
Volume 2017, Article ID 1730434, 10 pages
https://doi.org/10.1155/2017/1730434
Research Article

Evaluation of Shear Strength of Concrete Flat Plates Reinforced with GFRP Plates

Department of Architectural Engineering, Kyung Hee University, 1732 Deogyeong-daero, Yongin, Republic of Korea

Correspondence should be addressed to Young Hak Lee; rk.ca.uhk@hyeel

Received 19 January 2017; Accepted 20 March 2017; Published 18 May 2017

Academic Editor: Sumin Kim

Copyright © 2017 Min Sook Kim and Young Hak Lee. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The shear performance of concrete flat plates with glass fiber-reinforced polymer (GFRP) plate shear reinforcement was investigated through punching shear tests. Each GFRP plate was embedded in the concrete and included openings to permit the flow of concrete during fabrication. Punching shear tests were conducted on a total of 8 specimens, and the resulting crack and fracture formations, strains, and load-displacement curves were analyzed and compared. The experimental variables considered were the types of shear reinforcement, including steel stirrups or GFRP plates, and the shear reinforcement spacing. The experimental results show that the GFRP shear reinforcement effectively increased the shear strengths of flat plates. Furthermore, the applicability of two formulas was investigated: a modified version of a shear strength formula from ACI 318-14 and the ACI 318-14 fracture prediction formula.