›› 2007, Vol. 28 ›› Issue (4): 779-784.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Experimental study on ultrasonic properties of sandstone before and after high temperature

HE Guo-liang，WU Gang，HUANG Xing-chun，ZHANG Lei，QIU Yi-ping   

  1. Department of Civil Engineering, Shanghai Jiaotong University, Shanghai 200240, China
  • Received:2005-05-09 Online:2007-04-10 Published:2013-09-05

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Abstract: Ultrasonic velocities and dimensions of sandstone specimens from Jiaozuo that experience different temperature(100 ℃－1 200 ℃) are measured; and their uniaxial strength are tested. P-wave attenuation coefficients of rock specimens are calculated. Crack densities are calculated using relations between ultrasonic velocity and elastic moduli. The volumes, ultrasonic velocities and attenuation coefficients of sandstone specimens before and after high temperature are compared. Results show that the cracks of sandstone specimens develop so that the compactness and ultrasonic velocities of specimens decline. For sandstone specimens that experience different temperature the changes of ultrasonic velocity and uniaxial strength are obviously discrepant. But changes of attenuation coefficients are similar to uniaxial strength. It can be taken as reference to evaluate uniaxial strength at a certain extent.

Key words: post-high temperature, sandstone, ultrasonic properties, crack density, uniaxial strength

CLC Number: 

  • TU 458+.3
  • Please send e-mail to pingzhou3@126.com if you would like to read full paper in English for free. Parts of our published papers have English translations.
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