Shear Performance Assessment of Sand-Coated GFRP Perforated Connectors Embedded in Concrete
Zhihua Xiong 
1
Department of Bridge Engineering, Tongji University, 1239 Siping Road, Shanghai 200092, China
2
China Construction First Division Group Construction and Development Co., Ltd., Beijing 100161, China
3
Faculty of Civil Engineering and Geosciences, Delft University of Technology, 2600 AA Delft, The Netherlands
*
Author to whom correspondence should be addressed.
Materials 2019, 12(12), 1906; https://doi.org/10.3390/ma12121906
Received: 19 May 2019 / Revised: 5 June 2019 / Accepted: 11 June 2019 / Published: 13 June 2019
(This article belongs to the Section Structure Analysis and Characterization)
In order to evaluate the shear performance of sand-coated glass fiber-reinforced polymer (GFRP) perforated connectors (SCGPC) embedded in concrete, 8 pull-out tests were conducted. Finite element (FE) analysis considering GFRP failure and cohesion between GFRP and concrete of SCGPC were conducted for parametric analysis. Effects of surface treatment, hole’s radius, embedment length, and multi holes were examined. The test and theoretical analysis revealed that the strength of SCGPC is considerably larger than GFRP Perforated Connector (GPC). The stiffness of SCGPC is determined by the adhesion between concrete and GFRP. When GFRP plate’s thickness is less than the critical thickness, the embedment length plays a major role in the strength of SCGPC. When embedment length is less than the effective bond length, the shear strength of SCGPC is governed by both the adhesion and GPC’s shear capacity; otherwise, the strength of SCGPC is governed by the adhesion strength. Furthermore, an empirical equation was suggested to predict the shear strength of SCGPC. The equation involves the failure mechanism of both bond and GPC and deals the strength of SCGPC into two ranges according to the embedment length. Good agreement was achieved between the strength prediction by the suggested equation and the parametric analysis result.
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Keywords:
GFRP; sand coated; shear behavior; concrete; pull-out test
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MDPI and ACS Style
Xiong, Z.; Liu, Y.; Zuo, Y.; Xin, H. Shear Performance Assessment of Sand-Coated GFRP Perforated Connectors Embedded in Concrete. Materials 2019, 12, 1906.
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