Commenced in January 2007
Frequency: Monthly
Edition: International
Paper Count: 30222
Strengthen of Cold-Formed Steel Column with Ferrocement Jacket: Push out Tests

Authors: Khaled Alenezi, Talal Alhajri, M. M. Tahir, Mohamed Ragaee K. Badr, S. O. Bamaga

Abstract:

The population growth in the world requires an increase in demand of residential and housing construction. Using lightweight construction materials such as cold formed steel sections and ferrocement could be an alternate solution to foster the construction industry. In this study, a new composite column is introduced. It consists of cold formed steel section and ferrocement jacket. The ferrocement jacket was constructed using self-compacting mortar with two wire steel mesh of 550 MPa yield strength. Experimental push out tests was conducted to investigate the strength capacities and behavior of proposed shear connectors namely, bolt, bar-angle and self-drilling screw shear connectors. It was found that bolt connector showed the best behavior followed by bar-angle. Also, it was concluded that the ferrocement could be used to strength and improve the behavior of cold formed steel column.

Keywords: Cold Formed Steel, shear connector, ferrocement, composite column, push out test, strengthen method

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1335866

Procedia APA BibTeX Chicago EndNote Harvard JSON MLA RIS XML ISO 690 PDF Downloads 2900

References:


[1] S. M. Johnson, Deterioration, maintenance and repair of structures. New York: McGraw-Hill, 1965.
[2] R. P. Kumar, C.B.K. Rao, "Constitutive behavior of high-performance ferrocement under axial compression," Mag Concr Res, vol. 58, pp. 647–656, 2006
[3] R. P. Kumar, T. Oshima, S. Mikami and T. Yamazaki, "Ferrocement confinement of plain and reinforced concrete,”, Int J ProgStructEng Mater, pp. 6241–51, 2004
[4] ACI Committee 549.1–R88. Guide for the design, construction and repair of ferrocement. ACI Struct J. vol. 85, pp. 325–51, 1988.
[5] P. Balaguru, "Use of ferrocement for confinement of concrete," In 1988 Proceedings of the third international conference on ferrocement, pp. 296–305.
[6] C.B.K. Rao, A. K. Rao, "Stress–strain curve in axial compression and Poisson’s ratio of Ferrocement," Journal Ferrocement, vol. 6, pp. 17–28, 1988.
[7] K. K. Singh and S. K. Kaushik, "Ferrocement composite columns," In Proceedings 1988 of the third international conference on ferrocement, pp. 216–225.
[8] Ganesan, J. Anil, "Strength and behavior of reinforced concrete columns confined by ferrocement," J Ferrocement, vol. 23, pp. 99–108, 1993.
[9] L. Wang, Effect of corner radius on the performance of CFRP-confined square concrete column. M. Phil Thesis, Department of Building and Construction, City University of Hong Kong, 2007.
[10] Y. A. Al-Salloum, "Influence of edge sharpness on the strength of square concrete columns confined with FRP composite laminates," Composites Part B: Engineering, vol.38, pp. 640-650, 2006.
[11] J. G. Ollgaard, R. G. Slutter and J. W. Fisher, “Shear strength of stud connectors in lightweight and normal weight concrete,” Engineering Journal AISC, vol. 8, pp. 55-64, 1971.
[12] N. M. Hawkins, “The strength of stud shear connectors,” Civil Engineering Transactions, Institution of Engineers, Australia, vol. CE33, pp. 46-52, 1973
[13] D. J. Oehlers and R. P. Johnson, “The strength of stud shear connections in composite beams,” The Structural Engineer, June, Part B, 1987
[14] British Standards Institution, DD ENV 1994-1-1, Design of composite steel and concrete structures- Part 1.1, EC 4: General rules and rules for building. London: British Standards Institution, 1994
[15] D. J. Oehlers and S. M. Park, “Shear connectors in composite beams with longitudinally cracked slabs,” Journal of Structural Engineering, vol. 118, pp. 2004-2022, 1992.