Accession Number:

ADA056815

Title:

Clay Microstructure and Ice Nucleation.

Descriptive Note:

Final technical rept. Aug 77-Apr 78,

Corporate Author:

TECHNICAL UNIV OF NORTHERN SWEDEN LULEA DIV OF SOILS MECHANICS

Personal Author(s):

Report Date:

1978-04-01

Pagination or Media Count:

24.0

Abstract:

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

Subject Categories:

  • Geology, Geochemistry and Mineralogy
  • Snow, Ice and Permafrost

Distribution Statement:

APPROVED FOR PUBLIC RELEASE