Accession Number : AD0659781

Title :   CALCULATING THE AMOUNT OF UNFROZEN WATER IN FROZEN GROUND FROM MOISTURE CHARACTERISTIC CURVES.

Descriptive Note : Special rept.,

Corporate Author : COLD REGIONS RESEARCH AND ENGINEERING LAB HANOVER N H

Personal Author(s) : Keune,R. ; Hoekstra,P.

Report Date : JUL 1967

Pagination or Media Count : 13

Abstract : The unfrozen water content of a soil can be determined by calculating the partial molar free energy of water (delta F bar, subscript l) at any temperature and referring this value to the plot of delta F bar, subscript l vs. the water content of the soil under consideration. A plot of delta F bar, subscript l vs. water content can be obtained from a moisture characteristic curve at room temperature. Methods of calculating the numerical values for the graphs are outlined. Data are given for granular, clay, loam, and peat soils and for Na-montmorillonite, so that the results should be useful in estimating unfrozen water by comparing an unknown soil with a similar soil in the report. (Author)

Descriptors :   (*SOILS, *WATER), (*MOISTURE, MATHEMATICAL ANALYSIS), CLAY, SAND, SILT, GRAIN SIZE, FREEZING, ICE, TEMPERATURE

Subject Categories : Soil Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE