INTERACTION BETWEEN SOIL AND GEOGRIDS. POLYMER GRID REINFORCEMENT: PROCEEDINGS OF A CONFERENCE SPONSORED BY THE SCIENCE AND ENGINEERING RESEARCH COUNCIL AND NETLON LTD AND HELD IN LONDON 22-23 MARCH 1984

Abstract

Three mechanisms of interaction between soil and grid reinforcement have been identified to provide a framework for understanding and interpreting laboratory and field measurements. Their importance in governing the resistance to direct sliding of soil over grid reinforcement and the bond strength for different types of grid reinforcement has been examined. A qualitative model is proposed to classify the influence of soil particle size on soil grid interaction. Theoretical expressions have been developed to describe direct sliding resistance, bearing stresses, and bond strength of reinforcement in terms of well accepted soil and reinforcement parameters. The results have been compared with available laboratory and field data. Guidance is given on measuring values of grid sliding resistance and bond strength in the laboratory, and on the selection of parameters for design. For the covering abstract of the symposium see IRRD 284425. (Author/TRRL)