Assessment of bond strength in CFRP retrofitted beams under marine environment

Subhani, Mahbube, Al-Ameri, Riyadh and Al-Tamimi, Adil 2016, Assessment of bond strength in CFRP retrofitted beams under marine environment, Composite structures, vol. 140, pp. 463-472, doi: 10.1016/j.compstruct.2016.01.032.

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Title Assessment of bond strength in CFRP retrofitted beams under marine environment
Author(s) Subhani, MahbubeORCID iD for Subhani, Mahbube
Al-Ameri, RiyadhORCID iD for Al-Ameri, Riyadh
Al-Tamimi, Adil
Journal name Composite structures
Volume number 140
Start page 463
End page 472
Total pages 10
Publisher Elsevier
Place of publication Amsterdam, The Netherlands
Publication date 2016-04-15
ISSN 0263-8223
Keyword(s) Bond strength
Accelerated ageing
Wet–dry cycle
Flexural test
Long term prediction
Summary Carbon fibre reinforced polymer (CFRP) sheet has gained its popularity to retrofit civil structures which is bonded externally, typically on the soffit of a beam. In this study, the bond between carbon fibre reinforced polymer (CFRP) and concrete is improved by modifying the property of commercial epoxy and compared against normal epoxy. The deterioration in bond strength was produced by placing the beam into salt water under wet dry cycles. Also, a model is proposed to determine the bond strength from flexural test and compared against the available bond strength models which are typically obtained from pull out test. This proposed model shows promising results in terms of predicting the bond strength from flexural test. In addition, a strength reduction factor is introduced to incorporate the effect of wet dry cycles to predict the long term behaviour. It is found that the modified epoxy enhance the ductile property and bond strength.
Language eng
DOI 10.1016/j.compstruct.2016.01.032
Field of Research 090506 Structural Engineering
09 Engineering
Socio Economic Objective 870201 Civil Construction Design
HERDC Research category C1 Refereed article in a scholarly journal
ERA Research output type C Journal article
Copyright notice ©2016, Elsevier
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