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This technical note presents a new method to transport liquefiable soils from the investigation site to the laboratory. The development of this method resulted from research on liquefiable soils from the Imperial Valley, CA. This method is based upon the application of a slight vacuum on the pore water of the soil. The vacuum decreases the pore pressure, and therefore increases the effective confining stress. Sample recovery and integrity were compared with experiences of others. Comparisons were made in the sample quality after extrusion and sample preparation, as well as the variability of the test results. This method proved to be an improvement over previous techniques.
Assistant professor, Washington State University, Pullman, WA
Engineer, Upp Geotechnology, San Jose, CA
Lead engineer, Parsons, Brinckerhoff, Quade, and Douglas, New York, NY
Stock #: GTJ10649J