On the adhesion of wet cohesive soils with a hard surface machines
In developing the wet cohesive soils occur sticking and freezing of the soil on the working bodies of earthmoving machines, which significantly reduces their productivity. The analysis of the known theories of the moist cohesive soils adhesion to various hard surfaces has been carried out, and certain contradictions have been detected. They explain the causes of adhesion and its dependence on the following factors: surface roughness, chemical composition, material hydrophoby, level of excavating parts of the earth-moving machines, pressure intensity and time of pressing period, type of soil, moisture content and temperature in the contact zone. One can conclude that the additional experiments are required to eliminate the identified contradictions.