Wave Propagation in Confined Clay

by Delon Hampton, (M.ASCE), Prof. of Civ. Engrg.; Howard Univ., Washington, DC,
Peter J. Huck, (A.M.ASCE), Assoc. Res. Engr.; IIT Res. Inst., Chicago, IL,
Ernest T. Selig, (M.ASCE), Assoc. Prof. of Civ. Engrg.; State Univ. of New York at Buffalo, Buffalo, NY,

Serial Information: Journal of the Soil Mechanics and Foundations Division, 1970, Vol. 96, Issue 4, Pg. 1391-1410

Document Type: Journal Paper


Specimens of Kaolin clay were confined by a column of segmented rings consisting of 1-in. long hollow aluminum sections, of about 3-in. ID with 1/8-in. foam rubber spacers on each end. The peak shock pressures, applied by use of a gas shock tube, were in the range of 400 to 1,000 psi. Embedded stress and strain gages were used to measure the stress-time and strain-time responses at various points along the length of the specimens. The recorded data provided information on the soil stress-strain characteristics during shock loading as well as wave propagation characteristics such as peak stress attenuation, velocities of propagation, and wave front development. The experimental results were evaluated by means of a general one-dimensoinal computer code and estimates of the accuracy of the experimental techniques were made.

Subject Headings: Stress strain relations | Soil stress | Wave velocity | Clays | Strain gages | Wave propagation | Kaolin | Columns | Idaho | United States

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