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Advances in Materials Science and Engineering - Volume 2015 2015, Article ID 812797, 10 pages -

Research ArticleDepartment of Civil Engineering, Faculty of Engineering, University of Malaya, 50603 Kuala Lumpur, Malaysia

Received 5 February 2015; Accepted 2 April 2015

Academic Editor: Rui Vilar

Copyright © 2015 Md.
Akter Hosen et al.
This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Nowadays, the use of near surface mounted NSM technique strengthening reinforced concrete RC structural members is going very popular.
The failure modes of NSM strengthened reinforced concrete RC beams have been shown to be largely due to premature failure such as concrete cover separation.
In this study, CFRP U-wrap end anchorage with CFRP fabrics was used to eliminate the concrete cover separation failure.
A total of eight RC rectangular beam specimens of 125 mm width, 250 mm depth, and 2300 mm length were tested.
One specimen was kept unstrengthened as a reference; three specimens were strengthened with NSM steel bars and the remaining four specimens were strengthened with NSM steel bars together with the U-wrap end anchorage.
The experimental results showed that wrapped strengthened beams had higher flexural strength and superior ductility performance.
The results also show that these beams had less deflection, strain, crack width, and spacing.





Autor: Md.
Akter Hosen, Mohd Zamin Jumaat, and A.
B.
M.
Saiful Islam


Fuente: https://www.hindawi.com/



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