Impact Experimental Study for Dynamic Character of Reactive Powder Concrete

Abstract:

In order to systematically study dynamic mechanics character of reactive powder concrete (RPC), impact compression experiments and impact flattened Brazilian disc specimens of RPC have been investigated with modified split Hopkinson pressure bar (SHPB) experimental facility using brass pulse shaper, curves about stress versus strain and other parameters at strain rates of 20.3/s~137.0/s were obtained from impact compression. The dynamic tensile strength and tensile failure strain at strain rates of 3.4/s~26.2/s were obtained from impact flattened Brazilian. For comparison, the quasi-static compress and split tension of RPC were obtained with an MTS 810 materials test system and CSS-88500 electron universal material testing machine.The experimental result show that dynamic compression strength , elastic modulus and failure strain,dynamic tensile strength and failure strain significantly increase comparing to quasi-static experiment, RPC have the character of impact harding and ductility enhancement. RPC exhibit excellent failure patterns at high strain rate. Whether impact compression or impact splitting under strain rate including this paper ’s experiments, the relationship between the DIFC or DIFT and the logarithm of strain rateis linear.

• Periodical: Advanced Materials Research (Volumes 261-263)
• Pages: 187-191
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.261-263.187
• Online since: May 2011
• Authors: Wan Peng Wang, Yong Le Hu, Xin Tao Ren, Yi Bo Xiong, Kang Zhao, Xiao She
• Keywords: Failure Pattern, Impact Compression, Impact Split Tension, Reactive Powder Concrete (RPC), Split Hopkinson Pressure Bar (SHPB)

References

[1] P. Richard, M .Cheyrezy. Reactive powder concrete with high ductility and 200–800 MPa compressive strength. ACI SP 1994;144:507–18.

DOI: 10.14359/4536

[2] O .Bonneau, C.Vernet, Moranville M, Aitcin PC: submitted to Journal of Cem Concr Res(2000)

[3] E. Shaheen, N. Shrive: submitted to Journal of ACI Mater (2006)

[4] Y.Halit: submitted to Journal of Build Environ (2007)

[5] Qizhi Wang, Wei Li, Heoing Xie: submitted to Journal of Mechanics of Materials (2009)

[6] C.A. Ross, D.M. Jerome, J.W. Tedesco, M.L. Hughes: submitted to Journal of ACI Mater (1996)