Flexural strength and ductility of CFRP strengthened reinforced concrete beams
Joint Authors
al-Numan, Bayan S.
Ali, Uthman K.
Farhan, Jamal Abd al-Wahid
Source
Engineering and Technology Journal
Issue
Vol. 34, Issue 7A (31 Jul. 2016), pp.1294-1307, 14 p.
Publisher
Publication Date
2016-07-31
Country of Publication
Iraq
No. of Pages
14
Main Subjects
Abstract EN
A total of fourteen beams, 100×150 mm in cross-section were tested in the laboratory over an effective span of 2000 mm.
Two of them were used as reference beams.
Twelve fiber reinforced concrete beams were provided with externally bonded CFRP laminates at the soffit of the beam.
The variables considered included number of CFRP layers, yield strength of steel reinforcement (fy) and steel reinforcement ratio ().
All the beams were tested until failure.
The test results showed that the ultimate load carrying capacity increased by 56% as average by increasing of the ratio of steel reinforcement from (0.0127 to 0.0324).
The deflection ductility index DDI values averaged (1.80) and (1.75) for one-layer strengthened beams and two-layer ones, respectively.
The corresponding energy ductility index EDI values averaged (1.75) and (1.73), respectively.
The DDI and EDI for the control beams were 4.61 and 6.24, respectively.
With the exception of the control beams, all of the beams exhibited poor ductility.
Failures in all strengthened beams were accompanied by the release of large amounts of energy (known as elastic energy) relative to inelastic energy.
Therefore, a reasonable factor of safety should be used in the design of FRP strengthened reinforced concrete members
American Psychological Association (APA)
al-Numan, Bayan S.& Farhan, Jamal Abd al-Wahid& Ali, Uthman K.. 2016. Flexural strength and ductility of CFRP strengthened reinforced concrete beams. Engineering and Technology Journal،Vol. 34, no. 7A, pp.1294-1307.
https://search.emarefa.net/detail/BIM-700634
Modern Language Association (MLA)
al-Numan, Bayan S.…[et al.]. Flexural strength and ductility of CFRP strengthened reinforced concrete beams. Engineering and Technology Journal Vol. 34, no. 7A (2016), pp.1294-1307.
https://search.emarefa.net/detail/BIM-700634
American Medical Association (AMA)
al-Numan, Bayan S.& Farhan, Jamal Abd al-Wahid& Ali, Uthman K.. Flexural strength and ductility of CFRP strengthened reinforced concrete beams. Engineering and Technology Journal. 2016. Vol. 34, no. 7A, pp.1294-1307.
https://search.emarefa.net/detail/BIM-700634
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references : p. 1307
Record ID
BIM-700634