Strength and Ductility of Steel Fibre Reinforced High Performance Concrete (SFRHPC) Flexural Members

T. Sekar*
*Professor, Department of Civil Engineering, University College of Engineering, Ramanathapuram, Tamil Nadu, India.
Periodicity:June - August'2015
DOI : https://doi.org/10.26634/jste.4.2.3554

Abstract

This paper presents results of an experimental investigation carried out to study strength and ductility of conventionally reinforced high performance concrete flexural members (i.e. beams) additionally reinforced with steel fibres. Totally ten beams of 150 x 200 x 2200 mm size were cast with and without steel fibres, and tested under two point flexural loading. For casting beams, a high performance concrete (HPC) of M60 grade, and short discrete steel fibres of 0.5 mm diameter were used. The main variables considered in this study are: three different aspect ratios of steel fibres viz. 50, 75 and 100, and in each aspect ratio, three different volume fractions of fibres viz. 0.50%, 0.75% and 1.0%. Test results indicate that addition of steel fibres to conventionally reinforced HPC beam improves strength, ductility and other engineering properties markedly, and the improvement achieved is more when fibre length or fibre content is more. However, the rate of improvement reduces with increase in fibre content. Besides, incorporation of steel fibres improves cracking behaviour of beam by increasing first crack load, and also by forming large number of fine cracks. Furthermore, introduction of steel fibres improves dimensional stability and overall integrity of beam by effective 'fibre bridging action' across cracks. Empirical equations are also proposed to predict strength and ductility of SFRHPC composite beam in terms of 'fibre reinforcing index'.

Keywords

High Performance Concrete, Steel Fibre, Flexural Member, Strength, Ductility, Cracking Behaviour, Empirical Equation

How to Cite this Article?

Sekar, T. (2015). Strength and Ductility of Steel Fibre Reinforced High Performance Concrete (SFRHPC) Flexural Members. i-manager’s Journal on Structural Engineering, 4(2), 1-9. https://doi.org/10.26634/jste.4.2.3554

References

[1]. ACI 544.1R-96 (Reapproved 2002). “State-of-the-art report on fiber reinforced concrete”, American Concrete Institute, Farmington Hills, USA.
[2]. Alberto Meda, Fausto Minelli, and Giovanni A Plizzari. (2012). “Flexural behavior of RC beams in fiber reinforced concrete”, Composites: Part B 43, Elsevier Journals Pvt. Ltd., Vol. 45, No. 1, pp. 811 - 820.
[3]. Almansour, H., and Zoubir Lounis. (2007). “Innovative precast bridge superstructure using ultra high performance concrete girders”, Proceedings of the PCI National Bridge Conference, Phoenix, Arizona, pp. 1 - 21.
[4]. Amit Mittal. (1998). “Development of high performance concrete for containment dome of Kaiga atomic power project”, The Indian Concrete Journal, Vol. 72, No. 4, pp.193 - 202.
[5]. Balaguru, P., Ramesh Narahari, and Mehendra Patel. (1992). “Flexural toughness of steel fiber reinforced concrete”, ACI Materials Journal, Vol. 89, No. 6, pp.541 - 546.
[6]. Balasubramanian, K . ,Bharat kumar, B . H. , Gopalakrishnan, S., and Parameswaran, V.S. (1998). “Flexural behaviour of steel fibre reinforced concrete beams under static load”, Journal of Structural Engineering, Vol. 25, No. 3, pp.167 - 172.
[7]. Balendran, R.V., Zhou, F.P., Nadeem, A., and Leung, A.Y.T. (2002). “Influence of steel fibre on strength and ductility of normal and lightweight high strength concrete”, Building and Environment, Vol. 37, No. 12, pp. 1361 - 1367.
[8]. Edwards, D.L. (2000). “HPC on bridges - The Florida experience”, Concrete International, Vol. 22, No. 2, pp. 63 - 65.
[9]. Eswari, S., Raghunath, P.N., and Suguna, K. (2008). “Ductility performance of hybrid fibre reinforced concrete”, American Journal of Applied Sciences, Vol. 5, No. 9, pp. 1257 - 1262.
[10]. Ganesan, N., and Sekar, T. (2003). “Mechanical properties of super-plasticized micro-silica modified high strength concrete”, Indian Concrete Institute Journal, pp. 37 - 40.
[11]. Ganesan, N., and Sekar, T. (2005). “Permeability of steel fibre reinforced high performance concrete composites”, Journal of the Institution of Engineers (India), Civil Engineering Division, Vol. 86, pp. 8 - 11.
[12]. Ganesan, N., and Sekar, T. (2006). “Effect of microsilica and steel fibres on the strength of high performance concrete composites”, Journal of Structural Engineering, Vol. 33, No. 3, pp. 225 - 229.
[13]. Ganesan, N., and Shivananda, K.P. (2000). “Strength and ductility of latex modified steel fibre reinforced concrete flexural members”, Journal of Structural Engineering, Vol. 27, No. 2, pp.111 - 116.
[14]. Ganesan, N., Indira, P.V., and Abraham, R. (2007). “Behaviour of steel fibre reinforced high performance concrete members under flexure”, Journal of the Institution of Engineers (India), Civil Engineering Division, Vol. 88, No. 5, pp. 20 - 23.
[15]. George C. Hoff. (1996). “Production of HPC for offshore concrete platforms”, ACI Special Publication, Vol.159, pp. 302 - 322.
[16]. IS 1893 (part 1). (2002). Criteria for earthquake resistant design of structures – General provisions and buildings, Bureau of Indian Standards, New Delhi.
[17]. IS 383. (1970). Specifications for coarse and fine aggregates from natural sources for concrete, Bureau of Indian Standards, New Delhi.
[18]. IS 456. (2000). Plain and reinforced concrete – Code of practice, Bureau of Indian Standards, New Delhi.
[19]. IS 8112. (1989). 43 Grade ordinary Portland cement - Specification, Bureau of Indian Standards, New Delhi.
[20]. Jitendra Thakur. (2012). “Applications of high performance concrete in hydropower structures”, NBM & CW magazine, August 2012 issue.
[21]. Jyoti Narwal, Ajay Goel, Devender Sharma, Kapoor, D.R., and Bhupinder Singh. (2013). “An experimental investigation on structural performance of steel fibre reinforced concrete beam”, International Journal of Engineering and Advanced Technology, Vol. 2, No. 6, pp. 301 - 304.
[22]. Kwan, A.K.H., Ho, J.C.M., and Pam, H.J. (2002). “Flexural strength and ductility of reinforced concrete beams”, Proceedings of the Institution of Civil Engineers: Structures and Buildings, Vol. 152, No. 4, pp. 361 - 369.
[23]. Park, R. (2001). “Improving the resistance of structures to earthquakes”, Bulletin of the New Zealand National Society of Earthquake Engineering, Vol. 34, No. 1, pp.1 - 39.
[24]. Ramakrishnan, V. (1987). “Materials and properties of fibre reinforced concrete”, Proceedings of the International Symposium on Fibre Reinforced Concrete, Madras, India.
[25]. Sekar, T. (2005). Studies on strength and ductility of steel fibre reinforced-high performance concrete (SFRHPC) composites, Ph.D. Thesis, Department of Civil Engineering, National Institute of Technology, Calicut, Kerala.
[26]. Shah, S.P., and Rangan, R.V. (1971). “Fiber reinforced concrete properties,” ACI Journal, Proceedings, Vol. 68, No. 2, pp.126 - 135.
[27]. Sreeja, M.D. (2013). “Behaviour of steel fibre reinforced concrete beam under cyclic loading”, IOSR Journal of Mechanical and Civil Engineering, Vol. 6, No. 3, pp. 1 - 4.
[28]. Sy-Jye Guo, and Tung-Ho Tsai. (2013). “Application of high performance concrete on a 85-story high rise building in Taiwan”, The 30th International Symposium on Automation and Robotics in Construction and Mining, 11- 15th August 2013, Montreal, Canada, pp. 933 - 940.
[29]. Vandewalle, L. (2000). “Cracking behaviour of concrete beams reinforced with a combination of ordinary reinforcement and steel fibres”, Materials and Structures, Vol. 33, pp.164 - 170.
[30]. Vasant. B. Jatale, and Kalurkar, L.G. (2013). “Flexural strength of high strength steel fiber-reinforced concrete beams with stirrups”, International Journal of Engineering Research and Application, Vol. 3, No. 6, pp. 1580 - 1586.
[31]. Venkatesan, K.R., Raghunath, P.N., and Suguna, K. (2015). “Flexural behavior of high strength steel fibre reinforced concrete beams”, International Journal of Engineering Science and Innovative Technology, Vol. 4, No. 1, pp.135 - 140.
[32]. Wafa, F.F., and Ashour, S.A. (1992). “Mechanical properties of high-strength fiber reinforced concrete”, ACI Materials Journal, Vol. 89, No. 5, pp. 449 - 455.
[33]. Yang, I.H., Joh, C., and Kim, B.S. (2011). “Flexural strength of ultra-high strength concrete beams reinforced with steel fibers”, Procedia Engineering, Vol. 14, pp. 793 - 796.
[34]. Zhiliang Wang, Yiqun Tang, and Jianguo Wang. (2011). “Strength and toughness properties of steel fibre reinforced concrete under repetitive impact”, Magazine of Concrete Research, Vol. 63, No. 11, pp. 883 - 891.
[35]. Zhou, F.P., Barr, B.I.G., and Lydon, F.D. (1994). “Fracture mechanical properties of high strength concrete with varying silica fume contents and aggregates”, Cement and Concrete Research, Vol. 25, No. 3, pp. 543 - 552.
If you have access to this article please login to view the article or kindly login to purchase the article

Purchase Instant Access

Single Article

North Americas,UK,
Middle East,Europe
India Rest of world
USD EUR INR USD-ROW
Online 15 15

Options for accessing this content:
  • If you would like institutional access to this content, please recommend the title to your librarian.
    Library Recommendation Form
  • If you already have i-manager's user account: Login above and proceed to purchase the article.
  • New Users: Please register, then proceed to purchase the article.