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Structural Implications of Moisture Retention by Clay‐Size Soil Materials
Author(s) -
Kemper W. D.
Publication year - 1958
Publication title -
soil science society of america journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.836
H-Index - 168
eISSN - 1435-0661
pISSN - 0361-5995
DOI - 10.2136/sssaj1958.03615995002200010002x
Subject(s) - particle (ecology) , soil water , particle size , water content , moisture , organic matter , materials science , clay soil , mineralogy , soil science , chemical engineering , chemistry , composite material , geotechnical engineering , geology , organic chemistry , oceanography , engineering
At differential pressures, less than 1 atm., clay materials from soils retain much more water than calculations from Gouy theory would predict. Experimental evidence is shown which indicates that the excess water held in these materials is the result of a structure consisting of particle‐to‐particle bonds. The ability of this structure to resist pressures and by inference, the strength of the particle‐to‐particle bonds, can be increased by adding organic matter and decreased by increasing the amount of sodium on the exchange complex.