Research on Impact Behavior of Reactive Powder Concrete

Abstract:

By means of the three-point bending impact equipment, with the measurement of ultrasonic velocity, the impact behavior and damage evolution of reactive powder concrete (RPC) with 0, 1%, 2% and 3% volume fraction of steel fiber were tested. The results showed that steel fiber significantly improved the compressive strength, flexural strength, flexural toughness and impact toughness of RPC matrix. The compressive strength, flexural strength, flexural toughness of RPC with 3% steel fiber increased by 40.1%, 102.1%, and 37.4 times than that of plain concrete, respectively, and simultaneously, the impact toughness of RPC with 3% steel fiber was 93.2 times higher than that with 1% steel fiber. RPC with 2% and 3% steel fiber dosage both had relatively high compressive strength, flexural strength and flexural toughness; however, compared with the sample with 2% steel fiber dosage, the impact toughness of RPC with 3% steel fiber dosage increased by more than 10 times. Therefore, taking economy and applicability into consideration, if we mainly emphasis on the compressive strength, flexural strength and flexural toughness, RPC with 2% steel fiber is optimal. While if impact toughness is critical, RPC with 3% steel fiber would be the best choice.

• Periodical: Advanced Materials Research (Volumes 150-151)
• Pages: 779-782
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.150-151.779
• Online since: October 2010
• Authors: Qing Xin Zhao, Zhao Yang Liu, Jin Rui Zhang, Ran Ran Zhao
• Keywords: Flexural Toughness, Impact Behaviour, Reactive Powder Concrete (RPC), Steel Fiber (SF), Volume Fraction

References

[1] Matte V, Moranville M. Cement Concrete Comp 1999; 21(1): 1-9.

[2] Allan CLW, Paul AC, Richard B, et al. Cement Concrete Comp 2007; 29(60): 490-7.

[3] Richard P, Cheyrezy M. ACI SP 1994; 144: 507-18.

[4] Richard P, Cheyrezy M. Cement Concrete Res 1995; 25(7): 1501-11.

[5] Aïtcin PC. Cement Concrete Res 2000; 30(9): 1349-59.

[6] Bonneau O, Vernetb C, Moranvillea M, et al. Cement Concrete Res 2000; 30: 1861-7.

[7] Shaheen E, Shrive N. ACI Mater J 2006; 103: 444-51.

[8] Lee MG, Wang YC, Chiu CT. Constr Build Mater 2007; 21(1): 182-9.

[9] Yazıcı H, Yiğiter H, Karabulut AŞ, et al. Fuel 2008; 87(12): 2401-7.

[10] Tai YS. Theoretical and Applied Fracture Mechanics 2009; 52(1): 14-21.

[11] Zhang YS, Sun W, Liu SF, et al. Cement Concrete Comp 2008; 30(9): 831-8.

[12] Yazıcı H, Yardımcı MY, Aydın S, et al. Constr Build Mater 2009; 23(3): 1223-31.

[13] ACI committee 544, ACI Mater J 1988; 85(6): 583-9.