Effects of Fiber Volume Fraction and Aspect Ratio on Mechanical Properties of Hybrid Steel Fiber Reinforced Concrete

Document Type : Original Article

Authors

1 Ph.D. Candidate, Department of Civil Engineering, Faculty of Engineering, University of Tehran, Tehran, Iran.

2 M.Sc., Department of Civil Engineering, Faculty of Engineering, University of Tehran, Tehran, Iran.

3 Associate Professor, Department of Civil Engineering, Faculty of Engineering, University of Tehran, Iran

4 Professor, Department of Civil Engineering, Faculty of Engineering, University of Tehran, Tehran, Iran.

Abstract

In recent years, a new type of fiber reinforced concrete (FRC), called hybrid FRC, comprised of fibers of the same material but with different geometry has been developed. The aim of this paper is to investigate the influence of volume fraction and aspect ratio of steel fibers on the basic engineering properties of hybrid steel fiber reinforced concrete. To this end, steel fiber reinforced concrete composites, comprised of different combinations of fiber volume fraction and fiber size/shape, are experimentally tested and compared in terms of compressive, splitting tensile strengths and flexural toughness by four-point bending tests. The results indicate that both micro and macro size steel fibers generally improve various engineering properties of concrete, despite advantages of one on the other for different mechanical properties. Straightforward relations are proposed relating the significant mechanical properties of hybrid steel FRC to the volume fraction of micro and macro steel fibers in the composite.

Keywords

Main Subjects

References

[1]- De la Fuente, A., Pablo, P., Ana, B. and Antonio, A. (2012). Experiences in Barcelona with the use of fibres in segmental linings, Tunnelling and Underground Space Technology, 27: 60-71.
[2]- di Carlo, F., Meda, A., Rinaldi, Z. (2016). Design procedure for precast fibre-reinforced concrete segments in tunnel lining construction, Structural Concrete, 17: 747-59.
[3]- Meng, G., Bo, G., Jiamei, Z., Guodong, C. and Qian, Z. (2016). Experimental investigation of the mechanical behavior of the steel fiber reinforced concrete tunnel segment, Construction and Building Materials, 126: 98-107.
[4]- Caggiano, A., Paula, F., Carmine, L., Enzo, M. and Marco, P. (2017). On the mechanical response of Hybrid Fiber Reinforced Concrete with Recycled and Industrial Steel Fibers, Construction and Building Materials, 147: 286-95.
[5]- Li, J., Chengqing, W. and Zhong-Xian, L. (2017). Comparative evaluation of steel wire mesh, steel fibre and high performance polyethylene fibre reinforced concrete slabs in blast tests, Thin-Walled Structures.
[6]- Nehdi, M. L., Manal, F. N., Ahmed, M. S. and Tareq, M. A. (2017). Novel steel fiber reinforced preplaced aggregate concrete with superior mechanical performance, Cement and Concrete Composites, 82: 242-51.
[7]- Sorelli, L. G., Alberto, M. and Plizzari, G. A. (2005). Bending and uniaxial tensile tests on concrete reinforced with hybrid steel fibers, Journal of materials in civil engineering, 17: 519-27.
[8]- Su, Y., Jun, L., Chengqing, W., Pengtao, W., Ming, T. and Xibing, L. (2017). Mesoscale study of steel fibre-reinforced ultra-high performance concrete under static and dynamic loads, Materials & Design, 116: 340-51.
[9]- Ganesan, N., Sahana, R. and Indira, P. V. (2017). Effect of hybrid fibers on tension stiffening of reinforced geopolymer concrete, Advances in Concrete Construction, An Int'l Journal, 5.
[10]-Banthia, N., Yan, C. and Bindiganavile, V. (2000). Development and application of high performance hybrid fiber reinforced concrete, In Proceedings of the fifth international RILEM symposium on fibre-reinforced concrete, 471-80. Lyon, France.
[11]- Ganesan, N., Indira, P.V. and Irshad, P. (2017). RCC frames with Ferro cement and fiber reinforced concrete infill panels under reverse cyclic loading, Advances in Concrete Construction, An International Journal, 5.
[12]- Mobasher, B., and Li, C.Y. (1996). Mechanical properties of hybrid cement-based composites, ACI Materials Journal, 93.
[13]- Mobasher, B. (2011). Mechanics of fiber and textile reinforced cement composites (CRC press).
[14]- Libre, N., Shekarchi, A. M., Mahoutian, M., and Soroushian, P. (2011). Mechanical properties of hybrid fiber reinforced lightweight aggregate concrete made with natural pumice, Construction and Building Materials, 25: 2458-64.
[15]- Alberti, M. G., Enfedaque, A., and Gálvez, J. C. (2017). Fibre reinforced concrete with a combination of polyolefin and steel-hooked fibres, Composite Structures, 171: 317-25.
[16]- Zarrin, O. and Khoshnoud, H. R. (2016). Experimental investigation on self-compacting concrete reinforced with steel fibers, Structural Engineering and Mechanics, An International Journal, 59 
[17]-Banthia, N., Nandakumar, N. (2003). Crack growth resistance of hybrid fiber reinforced cement composites, Cement and Concrete Composites, 25: 3-9.
[18]- Plizzari, G. A. and Tiberti, G. (2006). Steel fibers as reinforcement for precast tunnel segments', Tunnelling and Underground Space Technology incorporating Trenchless Technology Research, 3: 438-39.
[19]- Japan Concrete Inst. (1984). JSCE-SF4. Standard for flexural strength and flexural toughness, method of tests for steel fiber reinforced concrete, In Concrete library of JSCE, 58-66.
[20]- ASTM. (1993). Annual book of ASTM standards, section 6, vol. 4.02, concrete and aggregates, In. Philadelphia, USA: American Society for Testing and Materials.
New Approaches in Civil Engineering
Volume 2, Issue 2 - Serial Number 2
September 2018
Pages 49-64

Files

Share

How to cite

Statistics