Premium
Surfactant and water migration in unsaturated sand
Author(s) -
Tschapek M.,
Boggio L.
Publication year - 1981
Publication title -
zeitschrift für pflanzenernährung und bodenkunde
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.644
H-Index - 87
eISSN - 1522-2624
pISSN - 0044-3263
DOI - 10.1002/jpln.19811440106
Subject(s) - pulmonary surfactant , surface tension , capillary action , water pressure , capillary pressure , pressure gradient , vadose zone , tension (geology) , significant difference , composite material , geology , materials science , mineralogy , geotechnical engineering , chemistry , thermodynamics , groundwater , ultimate tensile strength , porous medium , biochemistry , physics , oceanography , porosity , statistics , mathematics
Abstract1 In unsaturated coarse disperse materials such as sand, the water on the surface is continous and ‘deep’ enough to be an adequate medium for the migration of surface active substances (SAS). 2 The influence of the tangential force on water migration in unsaturated coarse disperse material is studied by compensating the capillary pressure difference caused by the surface tension gradient. 3 The influence on water migration in unsaturated disperse materials exerted by the additional pressure difference, originating from SAS migration, is comparable to that exerted by capillary pressure difference.