Location
St. Louis, Missouri
Presentation Date
04 Apr 1995, 10:30 am - 12:00 pm
Abstract
High strain rate tests were conducted on specimens of three different sands at saturations varying from dry to 100% using a Split-Hopkinson Pressure Bar. Compacted specimens were subjected to undrained uniaxial confined compression at approximate strain rates of 1000/s and 2000/s by an approximate square wave input of 225 MPa with a pulse length of 250 µs. The stress-strain curves show an initially steep portion which appears to be strain rate independent. Beyond this, slopes are about the same up to the lock-up strain, an abrupt change in slope, indicating an increase in stiffness. The effect of increasing saturation is to increase the slope or stiffness of the material. Results suggest that the soil skeleton dominates the response up to lock-up and the water phase dominates the response beyond.
Department(s)
Civil, Architectural and Environmental Engineering
Meeting Name
3rd International Conference on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics
Publisher
University of Missouri--Rolla
Document Version
Final Version
Rights
© 1995 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
Veyera, G. E. and Ross, C. A., "High Strain Rate Testing of Unsaturated Sands Using a Split-Hopkinson Pressure Bar" (1995). International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics. 8.
https://scholarsmine.mst.edu/icrageesd/03icrageesd/session01/8
Included in
High Strain Rate Testing of Unsaturated Sands Using a Split-Hopkinson Pressure Bar
St. Louis, Missouri
High strain rate tests were conducted on specimens of three different sands at saturations varying from dry to 100% using a Split-Hopkinson Pressure Bar. Compacted specimens were subjected to undrained uniaxial confined compression at approximate strain rates of 1000/s and 2000/s by an approximate square wave input of 225 MPa with a pulse length of 250 µs. The stress-strain curves show an initially steep portion which appears to be strain rate independent. Beyond this, slopes are about the same up to the lock-up strain, an abrupt change in slope, indicating an increase in stiffness. The effect of increasing saturation is to increase the slope or stiffness of the material. Results suggest that the soil skeleton dominates the response up to lock-up and the water phase dominates the response beyond.
