Study of the effect of particle characteristics on the flow behavior and strength properties of particulate materials
Abstract
The effect of inherent particle characteristics on the undrained and drained shear strength of sands was studied. Inherent particle characteristics, namely particle size and size distribution, surface texture, shape, hardness, and specific gravity are the factors considered. The flow rate of material through the flow cone tests are a measure of these inherent particle characteristics. Therefore, possible correlations of the liquefaction susceptibility as well as the drained and undrained shear strength properties can be obtained from the flow properties. Determination of inherent particle characteristics was achieved by conducting conventional tests such as sieve analysis and specific gravity tests. Quantification of the shape parameters is difficult. To achieve this objective, a new technique to quantify the shape parameters was developed. This new technique utilized the image analyzer. A method for preparing reconstituted specimens of sand with a high degree of repeatability in terms of density was also studied. Analytical investigations of the dynamic factors involved in the dry pluviation of particles was conducted to better understand the factors affecting the density obtained. It is assumed that the undrained steady state strength behavior is a function of the void ratio. The study should provide some insight into the other factors contributing to the undrained behavior as well as the flow behavior of sands.
Degree
Ph.D.
Advisors
Leonards, Purdue University.
Subject Area
Civil engineering|Geology|Geotechnology
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