| Titre : | Compacted soil liner interface strength importance (2012) |
| Auteurs : | Timothy D. Stark, Auteur ; Hangseok Choi, Auteur ; Chulho Lee, Auteur |
| Type de document : | Article : texte imprimé |
| Dans : | Journal of geotechnical and geoenvironmental engineering (Vol. 138 N° 4, Avril 2012) |
| Article en page(s) : | pp. 544–550 |
| Note générale : | Géologie appliquée |
| Langues : | Anglais |
| Tags : | Slope stability Landfills Geomembranes Geosynthetics Compacted soil liner Geosynthetic lined slopes Interface shear strength |
| Résumé : | This paper describes an interesting slope failure in a liner system of a municipal solid waste containment facility during construction because the sliding interface is not the geomembrane (GM)/compacted low-permeability soil liner (LPSL) but a soil–soil interface within the LPSL. Some of the lessons learned are as follows: (1) compaction of the LPSL should ensure that each lift is kneaded into the lower lift so a weak interface is not created in the LPSL; (2) the LPSL moisture content should be controlled so it does not exceed the specified value, for example 3–4% wet of optimum, because it can lead to a weak interface in the LPSL; (3) drainage material should be placed over the GM from the slope toe to the top to reduce the shear stresses applied to the weakest interface; and (4) equipment should not move laterally across the slope if it is unsupported but up the slope while placing the cover soil from bottom to top. |
| DEWEY : | 624.1 |
| ISSN : | 1090-0241 |
| En ligne : | http://ascelibrary.org/doi/abs/10.1061/%28ASCE%29GT.1943-5606.0000556 |
