Push-out Tests of Innovative Shear Connectors Between Cold-formed Steel Section Integrated with Ferrocement Jacket
DOI:
https://doi.org/10.11113/jt.v74.4611Keywords:
Push out test, cold-formed column, ferrocement jacket, shear connector, bolts, wire meshAbstract
Traditional construction materials such as steel and concrete exhibit signs of deterioration over the years. This can be attributed either to the inherent nature of the materials or their weak resistance to adverse the environmental conditions and natural disasters, such as, fires, earth quakes, etc. The use of ferrocement as an external jacket to cold-formed column is presented in this study to provide an alternative solution to existing construction materials. Ferrocement is a special form of reinforced concrete, which exhibits a behavior that differs much from conventional reinforced concrete in strength performance and other potential applications. The use of ferrocement with cold-formed steel as composite column is a new approach to enhance the axial load capacity of the later. Hence, the composite action between ferrocement and cold-formed steel section have to be established by means of understanding the behavior of the proposed shear connectors. In this study, push-out test set-up is proposed for eight specimens with various shear connectors’ configuration. The utilization of high strength self-compacting ferrocement mortar in the design of cold-formed steel integrated with ferrocement jacket as composite column is proposed. It was observed that ferrocement jacket with 12 mm bolt shear connectors showed the best shear capacity when compared to other proposed shear connectors.
References
ACI Committee 549.1–R88. 1988. Guide for the Design, Construction and Repair of Ferrocement. ACI Struct J. 85(3): 325–51.
Al-Salloum, Y. A. 2006. Influence of Edge Sharpness on the Strength of Square Concrete Columns Confined with FRP Composite Laminates. Composites Part B: Engineering. 38: 640–650.
American Society for Testing and Materials: ASTM 370-03a. 2000. Standard Test Methods and Definitions for Mechanical Testing of Steel Products. Philadelphia, USA.
Balaguru, P. 1988. Use of Ferrocement for Confinement of Concrete. In: Proceedings of the Third International Conference on Ferrocement. Roorkee, India. 296–305.
Bro, M. and Westberg, M. 2004. Influence of Fatigue on Headed Stud Connectors in Composite Bridges, Master’s Thesis, Department of Civil & Environmental Engineering, Lulea University of Technology Sweden.
BS EN1994-1-1. 2004. Eurocode 4: Design of Composite Steel and Concrete Structures-Part 1.1: General Rules and Rules for Building. British Standards Institution, London.
Ganesan, A. and Anil, J. 1993. Strength and Behavior of Reinforced Concrete Columns Confined by Ferrocement. Journal of Ferrocement. 23(2): 99–108.
Hawkins, N. M. 1973. The Strength of Stud Shear Connectors. Civil Engineering Transactions, Institution of Engineers, Australia. CE33: 46–52.
Hussin, M. W. 1991. Deflection and Cracking Performance of Fibrous Ferrocement Thin Sheets. Journal of Ferrocement. 21(1): 31–41.
Jawahar, J., Guru, Ramana Reddy, C. S., I. V. and Annie Peter, J. 2013. Optimization of Superplasticiser and Viscosity Modifying Agent in Self Compacting Mortar. Asian Journal of Civil Engineering (BHRC). 14(1): 71–86.
Jin, J. 2002. Properties of Mortar for Self-compacting Concrete. University College, London.
Johnson, S. M. 1965. Deterioration, Maintenance and Repair of Structures. New York: McGraw-Hill.
Li, A., and Cederwall, K. 1996. Push-out Tests on Studs in High Strength and Normal Strength Concrete. Journal of Constructional Steel Research. 36(1): 15–29.
Lloyd, R. M., and Wright, H. D. 1990. Shear Connection Between Composite Slabs and Steel Beams. Journal of Structural Engineering. 255–285.
Oehlers, D. J., and Johnson, R. P. 1987. The Strength of Stud Shear Connections in Composite Beams. The Structural Engineer. June, Part B.
Oehlers, D. J., and Park, S. M. 1992. Shear Connectors in Composite Beams with Longitudinally Cracked Slabs. Journal of Structural Engineering. 118(8): 2004–2022.
Ollgaard, J. G., Slutter R. G., and Fisher J. W. 1971. Shear Strength of Stud Connectors in Lightweight and Normal Weight Concrete. Engineering Journal AISC. 8: 55–64.
Pallares, L. and Hajjar, J. F. 2010. Headed Steel Stud Anchors in Composite Structures, Part I: Shear. Journal of Constructional Steel Research. 66: 198–212.
Rao, C. B. K, Rao, A. K. 1988. Stress–strain Curve in Axial Compression and Poisson’s Ratio of Ferrocement. Journal of Ferrocement. 16(2): 117–28.
Rathish, Kumar, P., Oshima, T., Mikami, Sh., andYamazaki, T. 2004. Ferrocement Confinement of Plain and Reinforced Concrete. Int J Prog Struct Eng Mater. 6241–51.
Rathish Kumar, P., Rao, C. B. K. 2006. Constitutive Behavior of High-Performance Ferrocement Under Axial Compression. Mag Concr Res. 58(10): 647–56.
Shim, C. S., Lee, P. G., and Yoon, T. Y. 2004. Static Behaviour of Large Stud Shear Connectors. Engineering Structures. 26(12): 1853-–1860.
Singh, K. K, Kaushik, S. K. 1988. Ferrocement Composite Columns. In: Proceedings of the Third International Conference on Ferrocement, Roorkee, India. 216–25.
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