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oai:mountainscholar.org:10217/2401232025-12-30T03:20:13Zcom_10217_100532com_10217_100000com_10217_100369com_10217_100303col_10217_100536col_10217_100381

Butler, Leo Wm., author Charlie, Wayne A., advisor Siller, Thomas J., committee member Doehring, Donald O., committee member 2025-03-12T13:37:50Z 2025-03-12T13:37:50Z 1994 https://hdl.handle.net/10217/240123 https://doi.org/10.25675/3.024678 Covers not scanned. The Piezovane was developed for determining in situ liquefaction potential of saturated sands by measuring the porewater pressure response oi saturated sand during and after shearing of the soil. A negative porewater pressure response is an indication that the material is in a dense (dilative) state; therefore is not susceptible to liquefaction failure. Positive porewater pressure response is an indication that the sand is in a loose (contractive) state and is susceptible to liquefaction-type failure. This project included design, fabrication of the Piezovane apparatus and the calibration chamber for the initial laboratory testing. Sands were placed within the calibration chamber at densities greater than or less than densities at the steady state which had been developed by using CU triaxial and CD direct shear tests. Trends indicate that the Piezovane testing can predict contractive or dilative behavior of soils. Additional testing both in the laboratory and in the field is required to determine whether these measured porewater pressure responses and measured shear resistances provide parameters needed for evaluating liquefaction potential and their possible use for design. A patent for the Piezovane has been awarded. masters theses English eng Colorado State University. Libraries Catalog record number (MMS ID): 991024261759703361; TA710.B76 1994 1980-1999 Copyright and other restrictions may apply. User is responsible for compliance with all applicable laws. For information about copyright law, please see https://libguides.colostate.edu/copyright. Soil liquefaction Soil mechanics Development of the piezovane for estimating liquefaction potential of saturated sands Text StillImage Master of Science (M.S.) Masters Civil Engineering Colorado State University This Item is protected by copyright and/or related rights (https://rightsstatements.org/vocab/InC/1.0/). You are free to use this Item in any way that is permitted by the copyright and related rights legislation that applies to your use. For other uses you need to obtain permission from the rights-holder(s). open.access