Investigation and Modeling of Soil-Structure Interface Properties

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by Patricia A. Lee, Ethyl Corp, United States,
William F. Kane, Ethyl Corp, United States,
Eric C. Drumm, Ethyl Corp, United States,
Richard M. Bennett, Ethyl Corp, United States,

Document Type: Proceeding Paper

Part of: Foundation Engineering: Current Principles and Practices

Abstract: An investigation of some techniques suggested to reduce friction at the soil-structure interface, for example plastic sheet on sand, is presented, and a model proposed for characterizing such interface behavior. A series of direct shear tests were performed on various combinations of soils and construction materials. These included: clay-plastic sheet, clay-smooth concrete, clay-rough concrete, sand-plastic sheet, sand-smooth concrete, and sand-rough concrete. Each interface combination was tested over a range of normal stresses chosen to include the typical stresses to which a residential foundation is subjected. Shear strength and stiffness parameters were determined for each interface combination and the unloading response was observed.

Subject Headings: Clays | Concrete | Sandy soils | Soil structures | Soil properties | Shear tests | Construction materials | Foundations |

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