Volume 28 Issue 4
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LUO Xin, XU Jin-Yu, SU Hao-Yang, LI Zhi-Wu, BAI Er-Lei. Experimental Parameter Control of SHPB Based on the Geopolymer Concrete[J]. Chinese Journal of High Pressure Physics, 2014, 28(4): 416-422. doi: 10.11858/gywlxb.2014.04.005
Citation: LUO Xin, XU Jin-Yu, SU Hao-Yang, LI Zhi-Wu, BAI Er-Lei. Experimental Parameter Control of SHPB Based on the Geopolymer Concrete[J]. Chinese Journal of High Pressure Physics, 2014, 28(4): 416-422. doi: 10.11858/gywlxb.2014.04.005

Experimental Parameter Control of SHPB Based on the Geopolymer Concrete

doi: 10.11858/gywlxb.2014.04.005
  • Received Date: 06 Jun 2012
  • Rev Recd Date: 22 Aug 2012
  • In order to test the impact mechanical properties of geopolymer concrete (GC) effectively, the slag and fly ash were used to fabricate the highly fluidized C30 GC.Based on the prepared GC, the parameter control of split Hopkinson pressure bar (SHPB) system was investigated, and the law between striker velocity, pulse shaper diameter and the optimum constant strain rate was obtained.The results indicate that the pulse shaping technique eliminates the phenomenon of wave oscillation and reduces the dispersion effect effectively; the rise time of the stress wave after shaping is higher than that of rectangular wave, which guarantees the dynamic stress equilibrium; a nearly constant strain-rate loading can be achieved through the integrated control of striker velocity and pulse shaper diameter.

     

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