Please use this identifier to cite or link to this item: http://hdl.handle.net/1959.3/232843

Title

A study of the use of high functionality-based resin for bonding between CFRP and concrete under harsh environmental conditions

Author(s)

Al-Safy, Rawaa;  Al-Mahaidi, Riadh;  Simon, George P.

Abstract

The application of carbon fibre reinforced polymer (CFRP) materials to strengthen and retrofit concrete structures requires appropriate bonding between the concrete members and CFRP composites. The experimental investigation reported in this work involved the modification of the adhesive used to bond CF fabric to concrete members, in order to improve CFRP/concrete bond performance under severe service conditions. The glass transition temperature, modulus and adhesive tensile strength of conventional bifunctional epoxy adhesives can be enhanced by their replacement with an epoxy resin monomer of a higher functionality, leading to a higher level of cross-linking. The interfacial bond strengths in the CFRP/concrete systems, the concrete/primer interface and the adhesive/primer interface were significantly improved when loaded CFRP/concrete samples were subjected to the combined effect of temperature and humidity for various exposures. This was true when either partly or fully replacing the conventional epoxy with the higher crosslink density material.

Publication type

Journal article

Research centre

Swinburne University of Technology. Faculty of Engineering and Industrial Sciences

Source

Composite Structures, Vol. 95 (Jan 2013), pp. 295-306

Publication year

2013

FOR Code(s)

09 Engineering

Keyword(s)

Bonding;  Carbon fibre reinforced polymers;  CFRP;  Concrete;  DGOA;  High functionality epoxy resin;  Humidity;  Temperature

Publisher

Elsevier

ISSN

0263-8223

Publisher URL

http://dx.doi.org/10.1016/j.compstruct.2012.06.027

Copyright

Copyright © 2012 Elsevier Ltd.

Peer reviewed