Date of Graduation

2017

Document Type

Thesis

Degree Type

MS

College

Statler College of Engineering and Mineral Resources

Department

Civil and Environmental Engineering

Committee Chair

PV Vijay

Committee Co-Chair

Yoojung Yoon

Committee Member

Radhey Sharma

Abstract

Fiber reinforced polymer (FRP) composite materials offer economical solutions to repair and rehabilitate the aging civil infrastructure at a fraction of the huge replacement cost. Glass and carbon FRP fabrics, bars, and shapes have been field implemented for the construction and rehabilitation of reinforced concrete (RC) structures. This research work aims at evaluating the mechanical and bond properties of Fiber Reinforced Polymer (FRP) composites for concrete structural applications. Both CFRP and Hybrid Carbon/Glass FRP (HFRP) have been investigated for repair and rehabilitation of civil infrastructure constructed of concrete. Concrete cylinders of different compressive strengths were tested with 1, 2, and 3 layers of confining CFRP and HFRP wraps. Similarly, split-bonded cylinders with adhesive bonding representing cracked and repaired concrete columns were also tested. In addition to cylinder testing, CFRP and HFRP wrapped concrete beams with varying types of damage were tested to find the wrap effectiveness, structural behavior, and flexural strength gains. Analytical modeling results for both concrete cylinders and beams were compared with the experimental results. Results show that both the fabric systems are effective in providing the necessary bond strength, confinement effects and flexural strength enhancement.

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