PULSE TRANSMISSION SYSTEM FOR MEASURING WAVE PROPAGATION IN SOILS

The authors developed a soil testing system for measuring wave propagation through soils using a pulse transmission technique. Very sensitive P- and S-transducers are mounted in the cap and pedestal of a triaxial testing device to detect even strongly attenuated waves that propagate through dry sand. Also, the wave forms during consolidation and undrained compression tests are used to investigate the process of soil structure change during deformation. The measured wave velocities are compared with findings from the resonant column method and in-situ wave velocity determinations. The pulse transmission method gives a higher S-wave velocity than the resonant column method, especially for clay samples. The difference may result from disturbance of the peripheral part of resonant column specimens. Good agreement is shown between pulse transmission method and the in-situ velocity measured by the suspension type S-wave logging, whereas the resonant column method gives lower velocity than the in-situ measurement by up to 50 percent in clays.

Language

  • English

Media Info

  • Features: Appendices; Figures; References;
  • Pagination: p. 302-308
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00720424
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Apr 16 1996 12:00AM