Masters Theses

Abstract

This study focused on evaluating the performance of concrete bridge barriers reinforced with Glass Fiber Reinforced Polymer (GFRP) compared to those reinforced with conventional mild steel. Four full-scale barriers were constructed, three using GFRP bars as the reinforcement and one with mild steel reinforcement. These were cast on two concrete slabs to ensure consistent support conditions. The use of GFRP aims to address durability concerns associated with steel reinforced concrete (RC), particularly corrosion of these bars in harsh environments.

To simulate real-world impact scenarios, a weighted cart was launched at each barrier using a guided sled system. Sensors, including load cells, string pots, strain gauges and accelerometers, were installed to record force, deformation, strain and acceleration during the impacts. This setup allowed for controlled, repeatable testing of each barrier's ability to withstand dynamic loading conditions similar to vehicular collisions.

Test results showed that the GFRP-reinforced barriers performed similarly to the steel-reinforced barrier, with no structural failure or significant damage at AASHTO MASH level loading under impact. The GFRP barriers exhibited good energy absorption and acceptable deformation levels, confirming their potential as a viable alternative to steel. These findings support the use of GFRP in bridge barrier systems, especially where corrosion resistance and long-term durability are critical.

Advisor(s)

Myers, John J.
Wu, Chenglin

Committee Member(s)

ElGawady, Mohamed

Department(s)

Civil, Architectural and Environmental Engineering

Degree Name

M.S. in Civil Engineering

Publisher

Missouri University of Science and Technology

Publication Date

Summer 2025

Pagination

ix, 43 pages

Note about bibliography

Includes_bibliographical_references_(pages 40-41)

Rights

© 2025 Manish Kumar Gadhe , All Rights Reserved

Document Type

Thesis - Open Access

File Type

text

Language

English

Thesis Number

T 12538

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