Authors :
Ali Raza; Saqib Ali; Dr. Shahzad Saleem
Volume/Issue :
Volume 9 - 2024, Issue 9 - September
Google Scholar :
https://tinyurl.com/3avaknfz
Scribd :
https://tinyurl.com/msecy5n8
DOI :
https://doi.org/10.38124/ijisrt/24sep1381
Note : A published paper may take 4-5 working days from the publication date to appear in PlumX Metrics, Semantic Scholar, and ResearchGate.
Abstract :
Strengthening of Reinforced concrete structures results in much greater capacity to sustain loads. This research investigates
the effect of corner radius on the compressive strength of concrete columns using steel jacket technique. Three parameters
considered were the cross- sectional shape (i.e., circular, square, and rectangular), the corner radius in case of square and
rectangular specimens and gauge of steel which is to be confined. Behavior and failure load of the strengthened columns were
experimentally investigated on thirty specimens divided into six un-strengthened specimens and twenty-four strengthened
ones. The results also indicate that the effectiveness of steel confinement decreases with an increase in sectional aspect ratio
and increases with an increase in corner radius. All the confined specimens display extremely ductile behavior because of
the concrete's high yielding strength, and noncircular columns effectively withstand the knife action of sharp edges. The
results show that while the average ultimate axial strain is significantly underestimated by all twenty-four models, the
average compressive strength of steel confined circular, square, and rectangular concrete columns is predicted correctly.
Keywords :
Circular; Compression; Confinement; Corner Radius; Steel Confined; Rectangular; Square.
References :
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- Almamoori, Ali Hameed Naser, Fatimah H. Naser, and Mohammed K. Dhahir. "Effect of section shape on the behaviour of thin-walled steel columns filled with light weight aggregate concrete: Experimental investigation." Case Studies in Construction Materials 13 (2020): e00356
- Farooq, H., et al. "Effect of steel confinement on axially loaded short concrete columns." IOP Conference Series: Materials Science and Engineering. Vol. 414. No.1 IOP Publishing, 2018.
- Jodawat, Abhishek, et al. "Retrofitting of Reinforced Concrete Column by Steel Jacketing." International Journal of Engineering Research and Application 6.7 (2016): 01-05.
- Saleh, Samoel Mahdi. "Size effect on the load carrying capacity of normal and lightweight concrete filled square steel tube composite columns." Int. J. Appl. Eng. Res 12 (2017): 5261-5266.
- Sezen, Halil, and Eric A. Miller. "Experimental evaluation of axial behavior of strengthened circular reinforced-concrete columns." Journal of Bridge Engineering 16.2 (2011): 238-247.
Strengthening of Reinforced concrete structures results in much greater capacity to sustain loads. This research investigates
the effect of corner radius on the compressive strength of concrete columns using steel jacket technique. Three parameters
considered were the cross- sectional shape (i.e., circular, square, and rectangular), the corner radius in case of square and
rectangular specimens and gauge of steel which is to be confined. Behavior and failure load of the strengthened columns were
experimentally investigated on thirty specimens divided into six un-strengthened specimens and twenty-four strengthened
ones. The results also indicate that the effectiveness of steel confinement decreases with an increase in sectional aspect ratio
and increases with an increase in corner radius. All the confined specimens display extremely ductile behavior because of
the concrete's high yielding strength, and noncircular columns effectively withstand the knife action of sharp edges. The
results show that while the average ultimate axial strain is significantly underestimated by all twenty-four models, the
average compressive strength of steel confined circular, square, and rectangular concrete columns is predicted correctly.
Keywords :
Circular; Compression; Confinement; Corner Radius; Steel Confined; Rectangular; Square.
