›› 2013, Vol. 34 ›› Issue (12): 3500-3504.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Experimental study of dynamic tensile behaviors of marble after high temperature

LIU Shi1, XU Jin-yu1, 2, BAI Er-lei1, ZHI Le-peng1, CHEN Teng-fei1   

  1. 1. Department of Airfield and Building Engineering, Air Force Engineering University, Xi?an 710038, China; 2. College of Mechanics and Civil Architecture, Northwest Polytechnic University, Xi?an 710072, China
  • Received:2012-08-29 Online:2013-12-10 Published:2013-12-19

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Abstract: In order to investigate the dynamic tensile strength of rock after high temperature under impact loading, the dynamic flattened Brazilian disc experiments of marble after different temperatures subjected to radial impact compression are carried out by using split Hopkinson pressure bar (SHPB). The temperature and impact loading rate effects on the dynamic tensile strength and dynamic tensile failure form of marble under impact loading after high temperatures are analyzed. It is demonstrated that after different high temperatures the dynamic tensile strength of marble is substantially higher than the static tensile strength and has an obvious impact loading rate strengthening effect. As temperature increases, the dynamic tensile strength of marble under the same impact loading rate increases first and then decreases. Meanwhile, the temperature and impact loading rate both have strong influence on the dynamic tensile failure form of marble under impact loading after high temperature.

Key words: rock mechanics, high temperature, loading rate, dynamic tensile strength, dynamic tensile failure

CLC Number: 

  • TU 452
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