Journal
INTERNATIONAL JOURNAL OF THERMOPHYSICS
Volume 33, Issue 5, Pages 843-863Publisher
SPRINGER/PLENUM PUBLISHERS
DOI: 10.1007/s10765-012-1184-2
Keywords
Canadian soils; Reverse modeling of quartz content; Thermal conductivity; XRD/XRF analysis
Funding
- Natural Sciences and Engineering Research Council (NSERC) Canada
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The measured mineral composition data (XRD/XRF) of 40 Canadian soils were modeled for the presence of as a function of soil texture. Preliminary modeling revealed a lack of strict correlation between content and mass fraction of sand. For that reason, the occurrence of content was modeled as dependent on a combined fraction of sand and silt, which produced an improved correlation for all tested soils. Then, all soils were modeled separately for five assigned provinces/regions of Canada and strong correlations of versus combined sand and silt fractions were obtained. Estimates of content and an average thermal conductivity of other minerals were also obtained by the reverse analysis of the weighted geometric mean model applied to the experimental thermal conductivity data of saturated soils. In general, estimates followed XRD/XRF data sufficiently well. The thermal conductivity of the remaining soil minerals was about 2.13 W center dot m(-1) center dot K-1 on average and did not depend on the soil texture.
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