LABORATORY DETERMINATION OF DYNAMIC MODULI OF FROZEN SOILS AND OF ICE.

The report presents a summary of results of laboratory investigations of frozen soils and ice to determine the elastic moduli by the dynamic (sonic) method. The elastic moduli were indirectly obtained by measuring the fundamental resonant frequencies of flexural, longitudinal, and torsional vibratio...

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Bibliographic Details
Main Author: Kaplar,Chester W.
Other Authors: COLD REGIONS RESEARCH AND ENGINEERING LAB HANOVER N H
Format: Text
Language:English
Published: 1969
Subjects:
Soil Mechanics
Snow
Ice and Permafrost
*SOILS
*ICE
MODULUS OF ELASTICITY
MECHANICAL PROPERTIES
LOADS(FORCES)
PLASTIC PROPERTIES
THERMAL STABILITY
FROST HEAVE
VIBRATION
TORSION
MEASUREMENT
WATER
TEST METHODS
SILT
CLAY
POISSON RATIO
LIQUID SATURATION
POISSONS RATIO
Ice
permafrost
Online Access:http://www.dtic.mil/docs/citations/AD0686282
http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=AD0686282
Description
Summary:The report presents a summary of results of laboratory investigations of frozen soils and ice to determine the elastic moduli by the dynamic (sonic) method. The elastic moduli were indirectly obtained by measuring the fundamental resonant frequencies of flexural, longitudinal, and torsional vibrations induced in prismatic beams by electromagnetic means. Vibration tests were performed on a total of 56 specimens representing 12 different materials (8 natural soil types, ranging from coarse-grained to fine-grained; 2 blended soils; a natural peat; laboratory-frozen ice and natural lake ice, at temperatures ranging from approximately +32F to -10F). Elastic wave velocities (longitudinal and torsional) were computed for each material in the range of test temperatures studied. All soils were saturated or were close to saturation. (Author)

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