Determination of Elastic Constants of Frozen Rubber-Sand Mixes by Ultrasonic Testing
Publication: Journal of Cold Regions Engineering
Volume 25, Issue 4
Abstract
This technical note presents measurements of ultrasonic velocities of compressional and shear waves in frozen ground-rubber-sand mixtures at various mixing ratios and subfreezing temperatures. Test results showed that ultrasonic velocities of compressional and shear waves increased with descending temperature, while the addition of rubber decreased both the compressional- and shear-wave velocity; namely, the higher the rubber content in the mixture, the lower the measured ultrasonic wave velocity. Based on the elastic wave theory and measured ultrasonic wave velocities, the dynamic elastic properties were determined. The results indicate that the elastic properties of rubber-mixed sand change with temperature and rubber-mixing ratio. The dynamic elastic modulus and dynamic shear modulus increased with a decrease in temperature. The deformation characteristics and rigidity of the frozen mixtures can be controlled with the addition of ground rubber to sand. The Poisson’s ratios ranged between 0.34 and 0.20.
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Acknowledgments
This research was financially supported by the Korean Ministry of Construction & Transportation and the Korea Institute of Construction Technology (Project No. UNSPECIFIED06D03).
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Information & Authors
Information
Published In
Journal of Cold Regions Engineering
Volume 25 • Issue 4 • December 2011
Pages: 196 - 207
Copyright
© 2011 American Society of Civil Engineers.
History
Received: May 18, 2009
Accepted: Jan 28, 2011
Published online: Jan 29, 2011
Published in print: Dec 1, 2011
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