Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Mixtures of Clay / EPS Particulates and Undrained Shear Strength
Soils mixed with expanded polystyrene (EPS) particulates could be used as lightweight fills in slopes for improved stability, embankments over compressible soils, and for reduced earth pressures in soil retention structures. The addition of very low density EPS particulates into soil has a large effect on the mass and volumetric properties of the resulting soil mixtures and their influence on mechanical properties is scarce in the literature. A laboratory characterization program of clay/EPS particulate mixtures was conducted for different dosages of EPS. The undrained shear strength of the soils modified with EPS particulates for both saturated and compacted conditions is presented herein. The preparation of unit element specimens and the influence of EPS content on the density and void ratio are presented. The reduction in dry unit weight is between 8% and 12% and the increase in equivalent void ratio is between 15% and 25% for each half percent increase in EPS content. The results indicate that, for the saturated mixtures, the undrained shear strength is relatively unaffected by EPS content. Conversely, for partially saturated compacted mixtures, a threshold EPS content was noted upon which significant reductions in the undrained shear strength were realized.
Mixtures of Clay / EPS Particulates and Undrained Shear Strength
Soils mixed with expanded polystyrene (EPS) particulates could be used as lightweight fills in slopes for improved stability, embankments over compressible soils, and for reduced earth pressures in soil retention structures. The addition of very low density EPS particulates into soil has a large effect on the mass and volumetric properties of the resulting soil mixtures and their influence on mechanical properties is scarce in the literature. A laboratory characterization program of clay/EPS particulate mixtures was conducted for different dosages of EPS. The undrained shear strength of the soils modified with EPS particulates for both saturated and compacted conditions is presented herein. The preparation of unit element specimens and the influence of EPS content on the density and void ratio are presented. The reduction in dry unit weight is between 8% and 12% and the increase in equivalent void ratio is between 15% and 25% for each half percent increase in EPS content. The results indicate that, for the saturated mixtures, the undrained shear strength is relatively unaffected by EPS content. Conversely, for partially saturated compacted mixtures, a threshold EPS content was noted upon which significant reductions in the undrained shear strength were realized.
Mixtures of Clay / EPS Particulates and Undrained Shear Strength
Rocco, Nicholas T. (Autor:in) / Luna, Ronaldo (Autor:in)
Geo-Congress 2013 ; 2013 ; San Diego, California, United States
Geo-Congress 2013 ; 2059-2068
25.02.2013
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
Mixtures of Clay/EPS Particulates and Undrained Shear Strength
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