Location
San Diego, California
Presentation Date
29 Mar 2001, 4:00 pm - 6:00 pm
Abstract
The Downhole Freestanding Shear Device is a new, in situ tool for measuring the dynamic properties of cohesive soil deposits. It has been designed and developed to perform cyclic torsional shear tests on freestanding specimens beneath the bottom of a cased borehole, with the goal of measuring local strains on soil which has not been significantly disturbed by the drilling, sampling, or unloading/reloading processes associated with conventional laboratory testing. The research team has completed the device, and is now in the process of validating its performance, first in a laboratory setting. The current paper presents results from the initial tests on soil, illustrating that this new device is capable of measuring shear modulus and damping over a wide range of shear strains, from 10-3 % to nearly 1%.
Department(s)
Civil, Architectural and Environmental Engineering
Meeting Name
4th International Conference on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics
Publisher
University of Missouri--Rolla
Document Version
Final Version
Rights
© 2001 University of Missouri--Rolla, All rights reserved.
Creative Commons Licensing
This work is licensed under a Creative Commons Attribution-Noncommercial-No Derivative Works 4.0 License.
Document Type
Article - Conference proceedings
File Type
text
Language
English
Recommended Citation
Riemer, Michael F.; Grizzle, Carlton; and Safaqah, Osama, "Measurement of Dynamic Properties of Clay Using the Downhole Freestanding Shear Device" (2001). International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics. 27.
https://scholarsmine.mst.edu/icrageesd/04icrageesd/session01/27
Included in
Measurement of Dynamic Properties of Clay Using the Downhole Freestanding Shear Device
San Diego, California
The Downhole Freestanding Shear Device is a new, in situ tool for measuring the dynamic properties of cohesive soil deposits. It has been designed and developed to perform cyclic torsional shear tests on freestanding specimens beneath the bottom of a cased borehole, with the goal of measuring local strains on soil which has not been significantly disturbed by the drilling, sampling, or unloading/reloading processes associated with conventional laboratory testing. The research team has completed the device, and is now in the process of validating its performance, first in a laboratory setting. The current paper presents results from the initial tests on soil, illustrating that this new device is capable of measuring shear modulus and damping over a wide range of shear strains, from 10-3 % to nearly 1%.
