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Further note on the capillary forces in an ideal soil

Published online by Cambridge University Press:  27 March 2009

R. A. Fisher
R. A. Fisher
Affiliation:
(Rothamsted Experimental Station, Harpenden.)
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Extract

The new observations of Haines on the pressure deficiency of liquid in a soil-like aggregate confirm the theoretical deduction that the pressure deficiency falls off with increasing water content, but do not justify his belief in a high static stress as saturation is approached.

A theorem is established connecting the static stress at any water content with the pressure deficiency and the dry area of the surface. This, together with general considerations of the energy conditions of physical equilibria, appears to dispose of the two assumptions from which the high values for the cohesive stress at saturation have been deduced.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 18 , Issue 3 , July 1928 , pp. 406 - 410
Copyright
Copyright © Cambridge University Press 1928

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References

REFERENCES

(1)Haines, W. B. (1925). “Studies in the physical properties of soils. II. A note on the cohesion developed by capillary forces in an ideal soil.” J. Agric. Sci. 15, 529–535.CrossRefGoogle Scholar
(2)Fisher, R. A. (1926). “On the capillary forces in an ideal soil.” J. Agric. Sci. 16, 492–503.CrossRefGoogle Scholar
(3)Haines, W. B. (1927). “Studies in the physical properties of soils. IV. A further contribution to the theory of capillary phenomena in the soil.” J. Agric. Sci.. 17, 264–290.CrossRefGoogle Scholar