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Retrofitting nonseismically detailed exterior beam-column joints using concrete covers together with CFRP jacket

Journal Article


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Abstract


  • This paper introduces a new method for retrofitting reinforced concrete (RC) exterior beamcolumn T joints, using segmental circular concrete covers together with Carbon Fibre Reinforced Polymer (CFRP). Two RC T connections without transverse reinforcement at the joints were cast and tested. The first connection (Strengthened specimen, TS) was glued with the concrete covers around the column at the joint area to modify it from a square to a circular section and then it was wrapped with CFRP to strengthen its capacity. A load was first applied on the second connection (Repaired specimen, TR) to cause a serious failure then it was repaired. The repair scheme of the second connection was identical to the first connection. Results of testing the two connections have shown that the performances of both the strengthened and the repaired connections were improved significantly. The glued concrete covers worked well with the existing concrete to resist shear load. Moreover, the wrap on the modified circular sections helped in increasing the effectiveness of CFRP by increasing the confinement effect on the concrete and reduce the possibility of debonding of CFRP at the joints. © 2014 Elsevier Ltd. All rights reserved.

Publication Date


  • 2014

Citation


  • Hadi, M. N. S. & Tran, T. Minh. (2014). Retrofitting nonseismically detailed exterior beam-column joints using concrete covers together with CFRP jacket. Construction and Building Materials, 63 161-173.

Scopus Eid


  • 2-s2.0-84899666991

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=3386&context=eispapers

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers/2377

Has Global Citation Frequency


Number Of Pages


  • 12

Start Page


  • 161

End Page


  • 173

Volume


  • 63

Place Of Publication


  • Netherlands

Abstract


  • This paper introduces a new method for retrofitting reinforced concrete (RC) exterior beamcolumn T joints, using segmental circular concrete covers together with Carbon Fibre Reinforced Polymer (CFRP). Two RC T connections without transverse reinforcement at the joints were cast and tested. The first connection (Strengthened specimen, TS) was glued with the concrete covers around the column at the joint area to modify it from a square to a circular section and then it was wrapped with CFRP to strengthen its capacity. A load was first applied on the second connection (Repaired specimen, TR) to cause a serious failure then it was repaired. The repair scheme of the second connection was identical to the first connection. Results of testing the two connections have shown that the performances of both the strengthened and the repaired connections were improved significantly. The glued concrete covers worked well with the existing concrete to resist shear load. Moreover, the wrap on the modified circular sections helped in increasing the effectiveness of CFRP by increasing the confinement effect on the concrete and reduce the possibility of debonding of CFRP at the joints. © 2014 Elsevier Ltd. All rights reserved.

Publication Date


  • 2014

Citation


  • Hadi, M. N. S. & Tran, T. Minh. (2014). Retrofitting nonseismically detailed exterior beam-column joints using concrete covers together with CFRP jacket. Construction and Building Materials, 63 161-173.

Scopus Eid


  • 2-s2.0-84899666991

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=3386&context=eispapers

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers/2377

Has Global Citation Frequency


Number Of Pages


  • 12

Start Page


  • 161

End Page


  • 173

Volume


  • 63

Place Of Publication


  • Netherlands