A STUDY OF THE BEHAVIOR OF A CLAY UNDER RAPID AND DYNAMIC LOADING IN THE ONE-DIMENSIONAL AND TRIAXIAL TESTS
ILLINOIS UNIV AT URBANA-CHAMPAIGN
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The behavior of soil under dynamic loading is an important factor in the soil-structure interaction problem. To study this behavior, a series of dynamic, high-pressure triaxial and one-dimensional compression tests has been conducted. Special testing devices developed for this research are described. In the one-dimensional tests, the peak pressures ranged from 620 psi to 11,300 psi with rise times to the peak pressure of 1.9 milliseconds to 1,625 milliseconds. In the triaxial tests, cell pressure from 100 psi to 1,010 psi were used with times-to-failure varying from 3 milliseconds to 100 seconds. In addition, partial loading triaxial tests were run in which the applied axial stress was 20 percent to 60 percent of the failure stress. The soil used was a compacted silty clay of low plasticity. The test results are presented and the influence of rate of loading and pressure level on compressive strength, ratio of lateral to axial pressures, stress-strain relations, residual strains, and creep under constant load are evaluated.
- Geology, Geochemistry and Mineralogy