METHOD TO DETERMINE SPECIFIC ADHESION OF SOILS Russian patent published in 2014 - IPC G01N3/00 

FIELD: measurement equipment.

SUBSTANCE: method to determine specific adhesion of soils consists in the fact that 6 drops of wetting liquid with available values of surface tension are applied onto a soil sample. Then the shape of the drop on the material surface is used to determine the angle of surface wetting, and using the functional dependence of cosθ-1=f(1/σ), they determine tangent of inclination angle a. Then, using the previously built calibrating dependence, they find the specific soil adhesion.

EFFECT: higher speed of determination, possibility to do tests both with preselected samples and directly at a facility, simplified equipment, possibility to perform analysis on any soils, higher accuracy of determination due to exclusion of impact of soil resistance to impression at side walls of a probe at the result.

1 dwg, 4 tbl