MEASUREMENT OF SHEAR WAVE VELOCITIES IN DILUVIAL GRAVEL SAMPLES UNDER TRIAXIAL CONDITIONS

A method of measuring the shear wave velocity in a triaxial test specimen (300 mm in diameter, 600 mm in height) has been proposed. The validity of the measurement method and the characteristics of the detected waves were confirmed by conducting preliminary tests on a steel cylinder and toyoura sand specimens. By applying this method, the velocities of the shear waves propagating in the 'undisturbed' samples which were obtained from diluvial gravel deposits by means of an in-situ freezing method were measured under various confining pressures. The results of these measurements indicated that the effect of confining pressure on shear wave velocity was more significant for diluvial gravel samples than for clean sand, and that the shear wave velocities in reconstituted gravel specimens at in-situ overburden pressure were 20 to 30 percent below those in diluvial gravel samples. The shear moduli in cyclic triaxial tests were about 5 percent less than those determined from measurement of shear wave velocities.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/00380806
• Authors:
  • Nishio, S
  • TAMAOKI, K
• Publication Date: 1988-6

Language

• English

Media Info

• Pagination: p. 35-48
• Serial:
  • SOILS AND FOUNDATIONS
  • Volume: 28
  • Issue Number: 2
  • Publisher: JAPANESE GEOTECHNICAL SOCIETY
  • ISSN: 0038-0806

Subject/Index Terms

• TRT Terms: Gravel; Measurement; Pressure; Repeated loads; Sand; Shear strength; Triaxial shear tests; Velocity; Waves
• Subject Areas: Geotechnology;

Filing Info

• Accession Number: 00487423
• Record Type: Publication
• Source Agency: Transport and Road Research Laboratory (TRRL)
• Files: ITRD, TRIS
• Created Date: Sep 30 1989 12:00AM