Accession Number : AD0675657

Title :   THERMAL CONDUCTIVITY OF SATURATED LEDA CLAY.

Descriptive Note : Research paper,

Corporate Author : NATIONAL RESEARCH COUNCIL OF CANADA OTTAWA (ONTARIO) DIV OF BUILDING RESEARCH

Personal Author(s) : Penner,E.

Report Date : SEP 1962

Pagination or Media Count : 14

Abstract : The thermal conductivity of saturated remoulded Leda clay, a soil of post-glacial marine origin, increased from 5.5 to 7 B.t.u. in/sq.ft hour degree F for an increase in dry density of 20 lb/cu.ft (75-95 lb/cu.ft) and decreased from 7 to 6 B.t.u. in/sq.ft hour degree F for an increase of clay size particles from 39 to 60%. The undisturbed soil appeared to have a higher thermal conductivity in the direction normal to the ground surface than in the remoulded condition, but insufficient results are available on which to base conclusions. Extrapolating the thermal conductivity to 100% solids gave a value of 11.8 B.t.u. in/sq.ft hour degree F. The use of the value for the solid fraction in De Vries's method for predicting the conductivity gave reasonable agreement with measured results. (Author)

Descriptors :   (*CLAY, THERMAL CONDUCTIVITY), DENSITY, FELDSPAR, MICA, QUARTZ, SAMPLING, MEASUREMENT, SOIL MECHANICS, CANADA

Subject Categories : Geology, Geochemistry and Mineralogy
      Thermodynamics

Distribution Statement : APPROVED FOR PUBLIC RELEASE