Repair of corroded steel beam using CFRP

Date of Award


Publication Type

Master Thesis

Degree Name



Civil and Environmental Engineering

First Advisor

Das, Sreekanta (Civil & Environmental Engineering)


Engineering, Civil.



Creative Commons License

Creative Commons Attribution-Noncommercial-No Derivative Works 4.0 License
This work is licensed under a Creative Commons Attribution-Noncommercial-No Derivative Works 4.0 License.


Many steel structures were built during World War I and II. More than twenty percent of steel bridges in the USA are structurally deficient. The cost for rehabilitation in most cases is far less than the cost of replacement. Moreover, the rehabilitation generally takes less time than replacement. Due to the limited methods available to mitigate this problem, new materials were explored in recent years to adopt cost-effective technique to address this issue. This thesis focuses on the use of Carbon Fiber Reinforced Polymer (CFRP) sheets as a competitive technique to restore the capacity of surface corroded steel beam. Rehabilitation was achieved by bonding the CFRP fabrics on to the corroded area of the bottom flange of steel beams. A series of tests and finite element analyses were also conducted. Results showed that the ultimate load capacity of the rehabilitated structures can be restored using this method; however, ductility reduces.