Research Article
Sep 1980
Dynamic Properties of Frozen Silt Under Cyclic Loading
Publication: Journal of the Geotechnical Engineering Division
Volume 106, Issue 9
Abstract
Cyclic triaxial tests were conducted to evaluate the dynamic properties of laboratory prepared samples of frozen silt under simulated earthquake loading conditions. Dynamic Young's modulus and damping ratio were evaluated for Hanover and Alaska silt at two water contents over axial strain amplitudes from approx 2x10-³% to 8x10-²%, temperatures from 30.2°F to 14°F (-1°C to -10°C), frequencies from 0.05 cps to 10.0 cps, and confining pressures from 0 psi to 200 psi (0kN/m² to 1400kN/m²). Values of dynamic Young's modulus obtained over the range of test parameters were from 1x105 psi to 35x105 psi (7x105 kN/m² to 245x105 kN/m²) for Hanover silt and 1x105 psi to 22x105 psi (7x105 kN/m² to 154x105 kN/m²) for Alaska silt; values of damping ratio ranges from.02 to.36 for Hanover silt and from.02 to.32 for Alaska silt. The test results indicate that dynamic Young's modulus of frozen silt decreases with increasing axial strain amplitude and temperature, increases with increasing frequency, and is unaffected by confining pressure. The damping ratio increases with increasing axial strain amplitude and temperature and decreases with increasing frequency, water content, and confining pressure.
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Information
Published In
Journal of the Geotechnical Engineering Division
Volume 106 • Issue 9 • September 1980
Pages: 963 - 980
Copyright
© 1980 American Society of Civil Engineers.
History
Published in print: Sep 1980
Published online: Feb 11, 2021
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Ronald L. Czajkowski, AM.ASCE
Sr. Engr., Woodward-Clyde Consultants, Houston, Tex
Ted S. Vinson, M.ASCE
Assoc. Prof. of Civ. Engrg., Oregon State Univ., Corvallis, Oreg
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