Reinforcement of corroded steel structures with CFRP panels

Cardona, Francisco and Tawfik, Qaidar H. and Karunasena, Karu (2012) Reinforcement of corroded steel structures with CFRP panels. In: ICACE 2012: International Conference on Architectural and Civil Engineering, 24-25 Oct 2012, Bali, Indonesia.

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Carbon Fibre Reinforced Polymer composites are a proven method of providing structural strengthening that is lighter, non-corrosive, and less labour intensive than the application of steel plate or exterior post-tensioning. Corrosion of steel structures in bridges and other civil engineering applications induces a serious structural damage that could lead to the failure during operating conditions. Instead of replacing the damaged structures there is the current approach of repairing the corroded steel structures by strengthening the damaged steel beams or gridges using Carbon Fibre Reinforced Polymer (CFRP). The focus in this work is on tension angle members in truss type of steel structures. The loss of sectional area due to corrosion effect was represented by creating notches of different sizes (3 mm – 12 mm) in the angles. The results revealed that CFRP reinforcement is able to rehabilitate the corroded steel to the point that the tensile strength reached a value within 20% of the original value of the undamaged steel truss for artificial notch length lower than 9 mm. The effect of moisture on the corroded and rehabilitated steel structures was also investigated and the results revealed a decrease of 7% in the ultimate tensile strength of the steel truss after 2000 hours of continue immersion in water.

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Item Type: Conference or Workshop Item (Commonwealth Reporting Category E) (Paper)
Refereed: Yes
Item Status: Live Archive
Additional Information: Author retains copyright
Faculty / Department / School: Historic - Faculty of Engineering and Surveying - Department of Agricultural, Civil and Environmental Engineering
Date Deposited: 24 Apr 2013 05:59
Last Modified: 18 Sep 2014 02:03
Uncontrolled Keywords: CFRP composites; corrosion of steel; tensile strength; moisture effect
Fields of Research : 09 Engineering > 0905 Civil Engineering > 090506 Structural Engineering
09 Engineering > 0912 Materials Engineering > 091202 Composite and Hybrid Materials
09 Engineering > 0912 Materials Engineering > 091209 Polymers and Plastics
Socio-Economic Objective: E Expanding Knowledge > 97 Expanding Knowledge > 970109 Expanding Knowledge in Engineering

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