›› 2007, Vol. 28 ›› Issue (5): 1021-1025.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Study on mechanism of thermal damage fracture for limestone

XIE Wei-hong1, GAO Feng2, LI Shun-cai2, GUAN Xiang-hui2   

  1. 1. Department of Airport Engineering, Xuzhou Air Force College, Xuzhou 221000, China; 2. School of Sciences, China University of Mining and Technology, Xuzhou 221008, China
  • Received:2005-06-13 Online:2007-05-10 Published:2013-09-10

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Abstract: Under uniaxial compressive and tensile loading, limestone’s meso-structure has been investigated by real-time under high temperature with advanced experiment instruments such as High Temperature Fatigue Testing System with Scanning Electron Microscope in Tsinghua University. Thermal damage evolution process, thermal crack growth and fracture characteristic of rock are discussed. The damage model of rock thermal crack growth is established. Combining test results with the concept of dislocation and diffusion creep, thermal damage deformation fracture mechanism of rock are researched. The results show that the thermal crack is intercrystalline crack mainly within the scope of 500 ℃.

Key words: limestone, temperature, thermal damage, fracture mechanism

CLC Number: 

  • TU 452
  • 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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