›› 2005, Vol. 26 ›› Issue (6): 924-928.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

An investigation to the creep of claystone

WAN Lin1,2, PENG Xiang-he1,2, YANG Chun-he3, GUO Kai-yuan1   

  1. 1.College of Resources and Environmental Science, Chongqing University, Chongqing 400044, China; 2.Key Lab. for the Exploitation of Southwest Resources & Environmental Disaster Control Engineering, Ministry of Education, Chongqing University, Chongqing 400044, China; 3.Institute of Rock and Soil Mechanics, Chinese Academy of Sciences,Wuhan 430071, China
  • Received:2005-02-28 Online:2005-06-10 Published:2013-12-17

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Abstract: The triaxial creep experiments of a kind of claystone was performed with a specially designed triaxial creep testing device; and the effects of axial stress ?1 and confining pressure ?3 on the creep are investigated. It was found that for constant confining pressure, creep develops faster, the steady-state creep strain rate increases, and the life is reduced, with the increase of axial stress. If the stress difference ?? =?1–?3 is constant, creep strain and steady-state creep strain rate decrease and the life increases with the increase of confining pressure. The creep behavior of claystone was analyzed with an elastic-viscoplastic constitutive model for incorporating damage and its evolution. It is shown that the main features observed in experiments can be satisfactorily described.

Key words: claystone, creep, damage, triaxial experiment, constitutive model

CLC Number: 

  • TU 45
  • 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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