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Method for Calculating the Edge Moisture Variation Distance.
- Source :
- Journal of Geotechnical & Geoenvironmental Engineering; Sep2004, Vol. 130 Issue 9, p945-955, 11p
- Publication Year :
- 2004
-
Abstract
- A three-dimensional moisture diffusion and volume change model was developed for determining the distribution of soil suction and the associated volume changes in an expansive soil mass under a covered area (e.g., slab foundations or pavements) with respect to time. The model was used to determine a relationship among the edge moisture variation distance, e<subscript>m</subscript>, the amplitude of surface suction change, U<subscript>0</subscript>, and the diffusion coefficient of the soil, α. The edge moisture variation distance calculation is based on the change in soil suction beneath the covered area as a result of climate changes. The edge moisture variation distance is considered to be the distance between the edge of the covered area and the point beneath the covered area where suction change is no more than 0.12 kPa (0.1 pF). Comparison between the predicted values of edge moisture variation distance by using the proposed relationship to that measured in the field or predicted by other methods is also presented. [ABSTRACT FROM AUTHOR]
- Subjects :
- SOIL moisture
CONDENSATION
HUMIDITY
MOISTURE
CLIMATE change
RAINFALL
Subjects
Details
- Language :
- English
- ISSN :
- 10900241
- Volume :
- 130
- Issue :
- 9
- Database :
- Complementary Index
- Journal :
- Journal of Geotechnical & Geoenvironmental Engineering
- Publication Type :
- Academic Journal
- Accession number :
- 14152067
- Full Text :
- https://doi.org/10.1061/(ASCE)1090-0241(2004)130:9(945)