[article]
| Titre : |
Geological and physical factors affecting the friction angle of compacted sands |
| Type de document : |
texte imprimé |
| Auteurs : |
Christopher A. Bareither, Auteur ; Tuncer B. Edil, Auteur ; Craig H. Benson, Auteur |
| Année de publication : |
2008 |
| Article en page(s) : |
pp. 1476–1489 |
| Note générale : |
Geotechnical and geoenvironmental engineering |
| Langues : |
Anglais (eng) |
| Mots-clés : |
Sand Friction Displacement Mineralogy Backfills Slopes |
| Résumé : |
This study evaluated the effects of physical characteristics and geologic factors on the shear strength of compacted sands from Wisconsin that are used as granular backfill for mechanically stabilized earth walls and reinforced soil slopes. Physical properties and shear strength were determined for 30 compacted sands collected from a broad range of geological deposits. Relationships between strength/deformation behavior, geologic origin, and physical properties were used to categorize the sands into four friction angle groups. Sands with the lowest friction angle are derived from weathering of underlying sandstones, and tend to be medium-fine, well-rounded, and poorly graded sands. Sands with the highest friction angle are from recent glacial activity and tend to be coarser grained, well-graded, and/or angular sands. A multivariate regression model was developed that can be used to predict friction angle (ϕ′) of compacted sands from comparable geological origins based on effective particle size (D10) , maximum dry unit weight (γdmax) , and Krumbein roundness (Rs) . |
| En ligne : |
http://ascelibrary.org/doi/abs/10.1061/%28ASCE%291090-0241%282008%29134%3A10%281 [...] |
in Journal of geotechnical and geoenvironmental engineering > Vol. 134 N°10 (Octobre 2008) . - pp. 1476–1489
[article] Geological and physical factors affecting the friction angle of compacted sands [texte imprimé] / Christopher A. Bareither, Auteur ; Tuncer B. Edil, Auteur ; Craig H. Benson, Auteur . - 2008 . - pp. 1476–1489. Geotechnical and geoenvironmental engineering Langues : Anglais ( eng) in Journal of geotechnical and geoenvironmental engineering > Vol. 134 N°10 (Octobre 2008) . - pp. 1476–1489
| Mots-clés : |
Sand Friction Displacement Mineralogy Backfills Slopes |
| Résumé : |
This study evaluated the effects of physical characteristics and geologic factors on the shear strength of compacted sands from Wisconsin that are used as granular backfill for mechanically stabilized earth walls and reinforced soil slopes. Physical properties and shear strength were determined for 30 compacted sands collected from a broad range of geological deposits. Relationships between strength/deformation behavior, geologic origin, and physical properties were used to categorize the sands into four friction angle groups. Sands with the lowest friction angle are derived from weathering of underlying sandstones, and tend to be medium-fine, well-rounded, and poorly graded sands. Sands with the highest friction angle are from recent glacial activity and tend to be coarser grained, well-graded, and/or angular sands. A multivariate regression model was developed that can be used to predict friction angle (ϕ′) of compacted sands from comparable geological origins based on effective particle size (D10) , maximum dry unit weight (γdmax) , and Krumbein roundness (Rs) . |
| En ligne : |
http://ascelibrary.org/doi/abs/10.1061/%28ASCE%291090-0241%282008%29134%3A10%281 [...] |
|
Geological and physical factors affecting the friction angle of compacted sands in Journal of geotechnical and geoenvironmental engineering, Vol. 134 N°10 (Octobre 2008)
