Clay Microstructure and Ice Nucleation.

The microstructural difference between weakly aggregated ('dispersed') and strongly aggregated clays means that a larger part of the water is structurally unaffected by clay mineral lattices in the last-mentioned type of clay which should therefore have a lower content of unfrozen water. T...

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Bibliographic Details
Main Author: Pusch,Roland
Other Authors: TECHNICAL UNIV OF NORTHERN SWEDEN LULEA DIV OF SOILS MECHANICS
Format: Text
Language:English
Published: 1978
Subjects:
Geology
Geochemistry and Mineralogy
Snow
Ice and Permafrost
*ICE
*CLAY
MICROSTRUCTURE
X RAY DIFFRACTION
TEST EQUIPMENT
GRAIN SIZE
NUCLEATION
SOIL MECHANICS
MOISTURE CONTENT
SURFACES
SALINITY
MINERALOGY
DILATOMETERS
ASH57
WU00624
PE61102A
Ice
permafrost
Online Access:http://www.dtic.mil/docs/citations/ADA056815
http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA056815
Description
Summary:The microstructural difference between weakly aggregated ('dispersed') and strongly aggregated clays means that a larger part of the water is structurally unaffected by clay mineral lattices in the last-mentioned type of clay which should therefore have a lower content of unfrozen water. This hypothesis was tested and found to be valid in an investigation where two such clays were actually compared with reference to the content of unfrozen water. The results from dilatometer and spin echo tests clearly show that this content is dependent not only on the specific surface area but also on the microstructural constitution expressed in terms of the degree of aggregation. (Author)

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