SUBMICROSCOPIC ANALYSIS ON DEFORMATION CHARACTERISTICS OF FROZEN SOIL CREEP

In this paper, computerized tomography (CT) is used to measure and analyze the change of submicrostructure of frozen soil in uniaxial and triaxial creep process. The study reveals that the strengthening and softening actions of structure, as well as the form characteristics of creep process in frozen soil are controlled by the growing and extending of structural damage in the creep process. The failure firstly appears in the weak area of low density layer of sample. In uniaxial creep process of frozen soil, a ring low density zone is formed in the weak layer and then extends outward, and finally leads to a failure of the integral structure. In triaxial creep process, tensile cracks are formed in the surface of the weak part of sample and then extends inward, and finally results in failure of integral structure. The volume of frozen soil continuously increases with time in uniaxial creep process but continuously decreases with time in the triaxial creep process. However, when the creep is in the third stage, the volume of frozen soil in the triaxial creep process tends to increase, but is still smaller than the initial value.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/10004548
• Corporate Authors:

  EDITORIAL OFFICE OF CHINESE JOURNAL OF GEOTECHINCAL ENGINEERING

  34 HUJUGUAN
  NANJING, JIANGSU  China  210024
• Authors:
  • ZIWANG, W U
  • WEI, M A
  • YIBIN, P U
  • XIAOXIAO, CHANG
• Publication Date: 1997-5-30

Language

• Chinese

Media Info

• Features: References;
• Pagination: p. 1-6
• Serial:
  • CHINESE JOURNAL OF GEOTECHNICAL ENGINEERING
  • Volume: 19
  • Issue Number: 3
  • Publisher: EDITORIAL OFFICE OF CHINESE JOURNAL OF GEOTECHINCAL ENGINEERING
  • ISSN: 1000-4548

Subject/Index Terms

• TRT Terms: Computers; Cracking; Creep; Deformation; Failure; Samples; Soils; Tension; Time; Triaxial shear tests; Volume
• Uncontrolled Terms: Cold; Uniaxial
• ITRD Terms: 6405: Axis; 9116: Cold; 5211: Cracking; 4732: Creep (mater); 5595: Deformation; 8673: Digital computer; 5520: Failure; 6251: Sample (mater); 4156: Soil; 5502: Tension; 5414: Time; 5566: Triaxial; 6468: Volume
• Subject Areas: Geotechnology;

Filing Info

• Accession Number: 00742696
• Record Type: Publication
• Source Agency: Transport Research Centre (CDV)
• Files: ITRD
• Created Date: Nov 26 1997 12:00AM