Date of Award

2018

Degree Type

Thesis

Degree Name

M.A.Sc.

Department

Civil and Environmental Engineering

First Advisor

Ghrib, Faouzi

Second Advisor

El-Ragaby, Amr

Keywords

Composite construction; Connections; GFRP; Push-off specimens; Shear friction; Shear transfer

Rights

CC-BY-NC-ND

Abstract

Composite construction in which precast girders and cast-in-place slabs are combined together is a widely used methodology especially in bridge construction. To maintain continuity at the slab-girder joints, steel reinforcement across these joints has always been used. Under the influence of extreme weather and traffic conditions, the steel reinforcement crossing these joints would be subjected to extensive corrosion. This would deteriorate the connection strength and subsequently the girder-slab composite action is reduced. Glass Fiber-Reinforced Polymer (GFRP) is an elastic, non-corrodible, strong and lightweight material that has been shown to be a good alternative to steel in many reinforced concrete applications. This study is the second phase of an ongoing research project at the University of Windsor to evaluate the performance of GFRP as a shear transfer reinforcement. The experimental program involved constructing and testing twenty push-off test specimens. Each specimen consisted of two connected L-shaped concrete blocks, cast at different times. The interface surface between the blocks was left as-cast and intersected by the GFRP reinforcement. In addition, control specimens containing steel and others with no reinforcement across their interfaces were used. The test parameters of the research included the reinforcement stiffness and the shape of the GFRP reinforcement. The data collected were the ultimate strength, the slip and the reinforcement strain. The test results of the specimens confirmed the feasibility and effectiveness of the GFRP shear transfer reinforcement at higher reinforcement contents.

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