A COMPARISON OF BOND PERFORMANCE OF CONCRETE REINFORCED WITH REINFORCEMENTS FROM DIFFERENT MANUFACTURERS
DOI:
https://doi.org/10.4314/njt.332.784Keywords:
Bond strength, Concrete, Failure Load, Pull-out Test, and Reinforcement.Abstract
The transfer of stress from a deformed bar to the concrete is achieved by mechanical locking of the steel into the surrounding concrete. This interfacial bond strength between steel and the surrounding concrete is an important factor influencing the strength and durability of reinforced concrete structure. This paper presents the result of investigation conducted to find out the bond performance of reinforcement from different manufacturer. 12 mm and 16 mm diameter steel specimens from five different manufacturers were used for this investigation. Tensile properties and pull out test were conducted. The results showed that: (i) all the steel specimens substantially met the minimum requirement specified by relevant standards for both 12 mm and 16 mm diameters, (ii) bond performance of locally-made was found to be better than the imported ones for 12 mm diameter, but for 16 mm diameter, imported steel showed a better bond performance than the locally made ones, (iii) all the steel specimens exhibited splitting failure, (iv) the lowest values of slippage were exhibited by a locally-sourced steel specimens, and (v) bond stresses obtained from this investigation for both 12 mm and 16 mm diameter bars are structurally adequate.
Downloads
Issue
Section
License
The contents of the articles are the sole opinion of the author(s) and not of NIJOTECH.
NIJOTECH allows open access for distribution of the published articles in any media so long as whole (not part) of articles are distributed.
A copyright and statement of originality documents will need to be filled out clearly and signed prior to publication of an accepted article. The Copyright form can be downloaded from http://nijotech.com/downloads/COPYRIGHT%20FORM.pdf while the Statement of Originality is in http://nijotech.com/downloads/Statement%20of%20Originality.pdf
For articles that were developed from funded research, a clear acknowledgement of such support should be mentioned in the article with relevant references. Authors are expected to provide complete information on the sponsorship and intellectual property rights of the article together with all exceptions.
It is forbidden to publish the same research report in more than one journal.