Experimental Investigation of Compressive and Tensile Strength of Steel Fiber Reactive Powder Concrete

Document Type : Original Article

Authors

1 Department of Civil Engineering,Yazd Branch, Islamic Azad University, Yazd, Iran.

2 Professor, Department of Civil Engineering, Ferdowsi University of Mashhad, Mashhad, Iran

3 Department of Civil Engineering, Faculty of Engineering, Ferdowsi University of Mashhad, Mashhad, Iran.

Abstract

Reactive powder concrete (RPC) is one of the ultra high performance concrete ( UHPC ) with superior physical and mechanical properties . Reactive powder concrete is produced using cement and very fine powdered materials including crushed quartz , silica fume and low water to cement ratio using super plasticizer . In this study , an optimum mixing ratio of RPC has been used , in which water / binder ratio ( W / B ) was equal to 0.15 and the ratio of super plasticizer to cement ( SP / C ), was equal to 3 % . For a long time , the idea of adding fibers to various types of concrete has been considered to improve its physical and mechanical properties . In this research , by performing several experiments, the influence of adding steel fibers on the compressive and tensile strength of RPC has been investigated . The results show that the average compressive strength of samples with 1 , 2 and 3 percent volumetric fibers increases about 6 , 20 and 5 percent , respectively , compared to non - fibrous specimens. This increase in tensile strength is 46 , 73 and 66 percent , respectively for the same amounts of steel fibers .

Keywords

Main Subjects


[1] Richard, P., Cheyrezy, M. (1995), Composition of Reactive Powder Concretes. Cement and Concrete Research, Vol. 25, No. 7, pp. 1501-1511.
[2] Long, G., Wang, X. and Xie, Y. (2002). Very-High-Performance Concrete with Ultrafine Powders. Cement and Concrete Research, Vol. 32, No. 4, pp. 601-605.
[3] Wong, A.C.L., Childs, P.A., Berndt, R., Macken, T., Peng, G.D. and Gowripalan, N. (2007). Simultaneous Measurement of Shrinkage and Temperature of Reactive Powder Concrete at Early-Age Using Fibre Bragg Grating Sensors. Cement and Concrete Composites, Vol. 29, No. 6, pp. 490-497.
[4] Zhang, M.H., Tam, C.T. and Leow, M.P. (2003). Effect of Water-to-Cementitious Materials Ratio and Silica Fume on the Autogenous Shrinkage of Concrete. Cement and Concrete Research, Vol. 33, No. 10, pp. 1687-1694.
[5] Habel, K., Denarie, E. and Bruhwiler, E. (2006). Structural Response of Elements Combining Ultrahigh-Performance Fibre–Reinforced Concretes. Journal of Structural Engineering, ASCE, Vol. 132, No. 11, pp. 1793 – 1799.
[6] Hoang, K.H., Phat, B. and Van Chanh, N. (2008). Influence of Types of Steel Fibre on Properties of Ultra High Performance Concrete. The 3rd ACF International Conference-ACF/VCA, pp.347-355.
[7] Mindess, S., Young, J.F. and Darwin, D. (2003). Concrete. 2nd Edition, Prentice Hall, New Jersey.
[8] Neville, A.M. (1995). Properties of Concrete. 4th Edition, Addison Wesley Longman Ltd., London.
[9] Reschke, T. (2000). Influence of Granulometry of Fines on the Microstructure Development and the Strength of Concrete. Series of the Cement Industry, Issue 62. (In Germany)
[10] Wild, S., Sabir, B.B. and Khatib, J.M. (1995). Factors Influencing Strength Development of Concrete Containing Silica Fume. Cement and Concrete Research, Vol. 25, No. 7, pp. 1567-1580.
[11] Rhaei, A. and Zomorrodian, A. (2005). Restoration and reinforcement of composite polymer fiber reinforced concrete structures (FRP). Tafresh University Press. (In Persian)
[12] Beddar, M. (2008). Development of steel fiber reinforced concrete from antiquity until the present day. Proceedings of International Conference on Concrete: Constructions sustainable option, Dundee, U.K., pp. 35-44.
[13] Bonneau, O., Lachemi, M., Dallaire, E., Dugat, J., and Aitcin, P.C. (1997). Mechanical Properties and Durability of Two Industrial Reactive Powder Concretes. ACI Materials Journal, Vol. 94, No. 4, pp. 286-290.