Spall Strength of Steel Fiber Reinforced Concretes

Abstract:

The spall fracture of steel fiber reinforced concretes (SFRC) is investigated with the strain wave profiles in buffer bar behind the specimen bar in a large size Hopkinson pressure bar equipment. The experimental results indicate that the spall strength of SFRC is related to the steel fiber volume ratio, the compressive strength of concretes and the load rate (impact velocity). The spall strength of SFRC empirical formula shows the relationship between these factors. The conclusion that the steel fiber has the effect to improve the ability to prevent spall fracture is of real importance in the correlative numerical simulation and protective engineering design.

• Periodical: Advanced Materials Research (Volumes 1120-1121)
• Pages: 1468-1474
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1120-1121.1468
• Online since: July 2015
• Authors: Lei Zhang*, Biao Wu, Ying Zhou
• Keywords: Hopkinson Bar, Impact, Spall Strength, Steel Fiber Reinforced Concretes (SFRC)

References

[1] Metha PK, Hall P, Cliffs E (1993) Concrete Structure, Properties and Materials. New Jersey. (2nd edition).

[2] Watson AJ, Sanderson AJ (1979) The resistance of concrete to shock. Proceedings of the Conference on Mechanics and Physics, Behaviour of Materials Under Dynamic Loading. Oxford: The Institut of Physics.

[3] Klepaczko JR, Brara A(2001) An Experiment Method for Dynamic Tensile Testing of Concrete by Spall. International Journal of Impact Engineering. 25: 387-409.

DOI: 10.1016/s0734-743x(00)00050-6

[4] Wu HJ, Zhang QM, Huang FL, Jin QK(2005) Experimental and numerical investigation on the dynamic tensile strength of concrete. International Journal of Impact Engineering. 32: 605-617.

DOI: 10.1016/j.ijimpeng.2005.05.008

[5] Brara A, Klepaczko JR(2006) Experimental characterization of concrete in dynamic tension. Mechanics of Materials 38: 253–267.

DOI: 10.1016/j.mechmat.2005.06.004

[6] Schuler H, Mayrhofer C, Thoma K(2006) Spall experiments for the measurement of the tensile strength and fracture energy of concrete at high strain rates. International Journal of Impact Engineering 32: 1635-1650.

DOI: 10.1016/j.ijimpeng.2005.01.010

[7] L. Zhang, S.S. Hu and D.X. Chen et al(2009). An experimental technique for spall of concrete. Experimental Mechanics. 49: 523-532.

[8] Berholf LD, Kames CH(1963) Two-dimensional Analysis of the Split Hopkinson Pressure Bar System. Journal of Mechanics and Physics of Solids. 11: 155-179.

[9] Lok TS, Li XB, Liu D(2002)Testing and Response of Large Diameter Brittle Materials Subjected to High Strain Rate. Journal of Materials in Civil Engineering. 14: 262-269.

DOI: 10.1061/(asce)0899-1561(2002)14:3(262)

[10] Taraby Antoun(2003) Spall Fracture. Springer-Verlag New York, Inc. 160-171.

[11] Zain MFM, Mahmud HB, Ilham AM, Faizal M(2002) Prediction of splitting tensile strength of high-performance concrete. Cement and Concrete Research. 32: 1251–1258.

DOI: 10.1016/s0008-8846(02)00768-8

[12] A. Brara, J.R. Klepaczko, Mech. Mater. 38 (2006) 253–267.

[13] P. Rossi, Mater. Struct. 30 (1997) 54–62.

[14] D. Zhu, A. Peled, B. Mobasher, Constr. Build. Mater. 25 (2011) 385–395.