Study on the adhesion law of rubber-soil interface under the influence of multiple factors

Soil adhesion is one of the basic physical properties of soil, which is manifested as the ability of soil to adhere to foreign objects. Soil adhesion can cause additional energy consumption in mechanical operations in agriculture, engineering, transportation and other fields, which is an important scientific problem to be studied and solved urgently. In this paper, three kinds of rubber tires with different surface roughness were used as test materials, and soil samples from six regions were selected as test soil samples. The adhesion force of rubber-soil interface under different normal loads was tested, and the variation law of soil peak adhesion force and the peak moisture content to reach peak adhesion force under the combined action of various influencing factors were analyzed and discussed. The mechanism of peak moisture content change under load was proposed. The test results show that the adhesion force of the rubber-soil interface increases with the increase of surface roughness, normal load and clay content. This experiment further promoted the study of soil adhesion and helped to solve the energy consumption problem caused by soil adhesion in the transportation field.