Pre-impregnated carbon fibre reinforced composite system for patch repair of steel I-beams

Manalo, Allan, Sirimanna, Chamila, Karunasena, Warna, McGarva, Lance and Falzon, Paul (2016) Pre-impregnated carbon fibre reinforced composite system for patch repair of steel I-beams. Construction and Building Materials, 105 365-376. doi:10.1016/j.conbuildmat.2015.12.172


Author Manalo, Allan
Sirimanna, Chamila
Karunasena, Warna
McGarva, Lance
Falzon, Paul
Title Pre-impregnated carbon fibre reinforced composite system for patch repair of steel I-beams
Journal name Construction and Building Materials   Check publisher's open access policy
ISSN 0950-0618
Publication date 2016-02-15
Year available 2015
Sub-type Article (original research)
DOI 10.1016/j.conbuildmat.2015.12.172
Open Access Status Not Open Access
Volume 105
Start page 365
End page 376
Total pages 12
Place of publication Amsterdam, Netherlands
Publisher Elsevier
Language eng
Abstract The application of fibre-reinforced polymer (FRP) composites for strengthening and rehabilitation of structural elements has become essential in recent years. However, most of the research and developments focused on using FRP strips or plates, which are limited in strengthening metallic structures with flat steel surfaces. In most cases, the damage due to corrosion are localised in the beam which requires more flexible composite repair system. In this study, a pre-impregnated carbon fibre reinforced epoxy repair system is evaluated through mechanical testing of tensile, double strap shear joint specimens, and structural testing of rehabilitated I-beams. The results showed that use of vacuum during laminate manufacture resulted in better mechanical properties due to the better consolidation of the fibre layers. A bond length of 120 mm provides a more consistent and reliable adhesively bonded joint and is representative of the bond strength of the rehabilitated steel beam. Finally, the patched carbon prepreg system successfully repaired the simulated crack and corrosion defects in steel I-beams, restoring them to their original load carrying capacity and stiffness.
Keyword Beam
Corrosion
Crack
Double-strap shear
Patch repair
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ
Additional Notes Published online 28 December 2015

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Mechanical & Mining Engineering Publications
Official 2016 Collection
 
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