Related Experiment Video
Updated: Jun 29, 2025

Preparation of Aligned Steel Fiber Reinforced Cementitious Composite and Its Flexural Behavior
Published on: June 27, 2018
Axial compression tests on CFRP strengthened CFS plain angle short columns
K S Vivek1, Mohammad Adil Dar2, M I Ali1
1Department of Civil Engineering, Vasireddy Venkatadri Institute of Technology, Guntur, 522508, AP, India.
Abstract:
A comprehensive test program was performed to experimentally investigate the effect of CFRP strengthening on the axial strength and stability of CFS plain angle short columns subjected to monotonic axial compression. A total of 28 specimens were tested by varying the CFRP strengthening configurations for different column heights. Both uni-directional (CF_UD) and bi-directional (CF_BD) CFRP were considered. The influence of various parameters such as the type of CFRP, fiber orientation, and number of CFRP layers was investigated and discussed in detail. For single layer (ply) of CFRP, CF_UD-0° strengthening configuration resulted in maximum increase of axial capacity by 58.33% and 45.72% (in comparison to bare steel specimens), corresponding to 0.5 m and 1.0 m column lengths respectively. All the bare steel and skin-strengthened specimens failed predominantly due to torsional-flexural buckling mode. Additional layer of CFRP wrapping was found to enhance the axial capacity further and CF_UD-0°/BD was found to possess greater capacity in the case of double layer of CFRP. Adopting cardboard in-fill in addition to CF_UD-0° wrap has prevented the torsional mode of buckling and resulted in a peak increase of axial capacity by 192.55% and 240.61% corresponding to 500 mm and 100 mm long specimens, respectively.
Related Concept Videos
Design of Columns under a Centric Load
Euler's formula is applicable under the assumption that the column is a perfect, straight, homogenous prism, and it is operating...
Design of Columns under an Eccentric Load
Behavior of Concrete Under Compressive Load
As the concrete specimen fractures under...
Euler's Formula to Columns with Other End Conditions
Stresses under Combined Loadings
The process begins by slicing the tube at critical points and analyzing the internal forces and stress components at these sections, focusing on the centroid. Normal stresses, generated by axial forces and bending moments, are either compressive or tensile and vary across the section from...
Euler's Formula for Pin-Ended Columns
To calculate the critical load,...

