Results 241 to 250 of about 1,830,996 (296)
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Canadian Journal of Soil Science, 1988
Drying rates of frozen aggregates varied from 2 mg cm−2 h−1 to zero, mainly in response to decreasing water content. Temperature, windspeed and dryness of the air controlled the maximum rate of drying. The variation in drying rate with water content was explained by the balance between ice and water in the pores.
E. de JONG, R. G. KACHANOSKI
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Drying rates of frozen aggregates varied from 2 mg cm−2 h−1 to zero, mainly in response to decreasing water content. Temperature, windspeed and dryness of the air controlled the maximum rate of drying. The variation in drying rate with water content was explained by the balance between ice and water in the pores.
E. de JONG, R. G. KACHANOSKI
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1994
Foundation design in areas of seasonal frost depends on the choice of an appropriate foundation depth and protection of the foundation from the effects of frost, particularly where there is frost-susceptible soil. Under certain conditions, harmful frost action effects may arise.
Orlando B. Andersland, Branko Ladanyi
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Foundation design in areas of seasonal frost depends on the choice of an appropriate foundation depth and protection of the foundation from the effects of frost, particularly where there is frost-susceptible soil. Under certain conditions, harmful frost action effects may arise.
Orlando B. Andersland, Branko Ladanyi
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Study of the spectral gradient of frozen soil
2010 IEEE International Geoscience and Remote Sensing Symposium, 2010Spectral gradient is one of the indicators of soil freeze and thaw. A negative spectral gradient was a sign of frozen soil. A truck-mounted microwave radiometer observed the frozen ground in two experiments. However, the measured spectral gradient was positive when the surface is frozen.
Shaojie Zhao +5 more
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Canadian Journal of Soil Science, 2010
An outline is presented of the relations between the energy status of water and the content of liquid water and ice in frozen soils. The theory formulates the dependence of the soil moisture characteristic (moisture retention curve) of a frozen soil on the load pressure and the temperature.
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An outline is presented of the relations between the energy status of water and the content of liquid water and ice in frozen soils. The theory formulates the dependence of the soil moisture characteristic (moisture retention curve) of a frozen soil on the load pressure and the temperature.
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Practice of Testing Frozen Soils
2013When designing building foundations, infrastructure, or operations for natural resource retrieval in cold regions, mechanical properties of frozen soils need to be known in order to avoid sudden bearing capacity failures, excessive creep settlements, and slope failures. Several methods exist to measure the mechanical properties of frozen soils, some of
Finn E. Oestgaard, Hannele K. Zubeck
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Electro-osmosis in Frozen Soil
Nature, 1964WATER can be transported in unfrozen soil under an electrical gradient. This process, which is called electro-osmosis, is due to an excess of positive ions over negative ions in the water near a solid surface. The amount of water which can be transported by electro-osmosis is such that in some instances it has been used to stabilize soft clay ...
P. HOEKSTRA, E. CHAMBERLAIN
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Soil‐moisture conditions and phenomena in frozen soils
Eos, Transactions American Geophysical Union, 1942In this article we shall discuss briefly some of the general characteristics of observations in laboratory and field related to freezing of soil‐moisture. We shall also consider the basic thermodynamic theory requisite to an interpretation of these observations in relation to the movement of moisture associated with frozen soils.
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Mechanical Properties of Frozen Soil
2013Description Thirteen peer-reviewed papers cover the latest information on: research needed in frozen soil related engineering and frozen soil standard development needs including thaw consolidation test, shear stress test, triaxial compression test, unfrozen water content test, segregation potential test, handling-transportation-storage ...
Hannele Zubeck, Zhaohui Yang
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Microwave Thawing of Frozen Soil
Journal of Microwave Power, 1982The design and performance of a novel microwave power applicator are described for thawing frozen soils and similar outdoors applications in the construction industry.
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