Scientia Iranica

Scientia Iranica

Experimental Investigation of Square RC Column Strengthened with Near Surface Mounted GFRP Bars Subjected to Axial and Cyclic lateral Loads

Authors
N. Dayhim 1
A. Nicknam 1
M.A. Barkhordari 1
A. Hosseini 2
S. Mehdizad 3
1 Department of Civil Engineering, Iran University of Science and Technology, P.O. Box. 16765-163, Tehran, Iran
2 Department of Civil Engineering, Tehran University, P.O. Box. 11365-4563, Tehran, Iran
3 Department of Civil Engineering, Sharif University of Technology, P.O. Box. 11155-9313, Tehran, Iran
Abstract
This article is intended to highlight the effectiveness of longitudinal Glass Fiber Reinforced Polymer (GFRP) bars in combination with GFRP sheets on the flexural capacity of Reinforced Concrete (RC) columns. Seven half-scale RC columns including five strengthened and two control unstrengthened specimens were experimentally tested under axial and cyclic lateral loads. The strengthened columns with two different longitudinal GFRP bar ratios were tested under three different axial load levels. The flexural strength and ductility parameters of the specimens were calculated by obtaining their deformations and measuring the loads from load cells. The experimental results indicate significant increase in the flexural strength of the RC specimens. The results of this study can be reliably utilized to enhance the flexural strength of RC columns in the regions with high seismicity.
Keywords
Cyclic Lateral Load
GFRP Bar
Near-Surface Mounted Technique
GFRP Wrap
ductility
Flexural strengthening
Scientia Iranica
Volume 20, Issue 5
Transactions on Civil Engineering (A)
September and October 2013
Pages 1361-1371

  • Receive Date 24 July 2013
  • Accept Date 09 July 2017