Determination of contact characteristics at the soil-geotextile interface in a triaxial compression

Abstract


The interaction of soil with reinforcing elements is of key importance in design calculations and subsequent reliable operation of reinforced soil structures. This interaction is reflected in the form of contact characteristics, such as the friction coefficient of geosynthetic material on the soil (friction angle at the soil-geosynthetic contact) and adhesion at the soil-geosynthetic interface.The paper presents the results of triaxial tests of sandy soil reinforced with woven geotextile. The purpose of the experiments was to determine the contact characteristics of the reinforcing elements with non-cohesive soil (friction angle at the soil-geosynthetic contact) during tests in a triaxial compression device. In the course of the research, a simple method for determining the contact characteristics was proposed.As a result of the research, the values of the friction angle at the contact boundary of the geosynthetic material with the soil were obtained, which depend not only on the type of soil and reinforcement material, but also on their joint operation with each other. The method proposed by the authors is simple, inexpensive and accessible.

Full Text

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About the authors

V. G Ofrikhter

Perm National Research Polytechnic University

M. S Kazakov

Perm National Research Polytechnic University

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