Premium
HYSTERESIS IN THE MOISTURE CHARACTERISTICS OF CLAY SOIL
Author(s) -
PAVLAKIS GEORGE,
BARDEN LAING
Publication year - 1972
Publication title -
journal of soil science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.244
H-Index - 111
eISSN - 1365-2389
pISSN - 0022-4588
DOI - 10.1111/j.1365-2389.1972.tb01667.x
Subject(s) - wetting , saturation (graph theory) , hysteresis , permeability (electromagnetism) , soil science , soil water , degree of saturation , water content , moisture , geotechnical engineering , soil structure , microstructure , water saturation , suction , porosity , clay soil , materials science , geology , environmental science , chemistry , mathematics , composite material , thermodynamics , physics , biochemistry , quantum mechanics , combinatorics , membrane
Summary The relation between soil suction, degree of saturation, and the air and water permeabilities is experimentally investigated for two clay soils. Marked hysteresis can exist between saturation and permeability, but does not follow a unique trend. Thus permeability can be greater on a wetting or drying cycle depending on the structure of the clay soil. This behaviour is considered in terms of the cluster concept of soil structure, and it is concluded that any general theory of hysteresis must recognize both the macrostructure and microstructure of a soil.