Model tests on discontinuities in subsurface barrier installed by the vibrating beam method / W. Wu in Journal of geotechnical and geoenvironmental engineering, Vol. 134 N°4 (Avril 2008)  

Public ISBD [article]  inJournal of geotechnical and geoenvironmental engineering > Vol. 134 N°4 (Avril 2008) . - pp. 541–546 Titre : Model tests on discontinuities in subsurface barrier installed by the vibrating beam method Type de document : texte imprimé Auteurs : W. Wu, Auteur ; F. Aschauer, Auteur ; G. Reiser, Auteur Année de publication : 2008 Article en page(s) : pp. 541–546 Note générale : Geotechnical and geoenvironmental engineering Langues : Anglais (eng) Mots-clés : Fine-grained soil Model tests Barriers Clays Silts Groundwater pollution Résumé : In the present note, the susceptibility to necking of a subsurface barrier installed by the vibrating beam method in fine-grained soils is investigated by physical model tests. Two soils are investigated, a clayey soil and a silty soil. The model soil is prepared by moist tamping. The recipe of slurry in the model tests is widely used in the foundation engineering industry. The dynamic loading exerted by the vibration of the adjacent panel is simulated by a shake table. The test results show that soil plasticity and water content are the major influence factors on the susceptibility to necking. The plasticity index can be used as an indicator for the susceptibility to necking of subsurface barrier installed by the vibrating beam method in fine-grained soils. Other influence factors on necking are also investigated and their implications for practice are discussed. En ligne : http://ascelibrary.org/doi/abs/10.1061/%28ASCE%291090-0241%282008%29134%3A4%2854 [...] [article] Model tests on discontinuities in subsurface barrier installed by the vibrating beam method [texte imprimé] / W. Wu, Auteur ; F. Aschauer, Auteur ; G. Reiser, Auteur . - 2008 . - pp. 541–546. Geotechnical and geoenvironmental engineering Langues : Anglais (eng) in Journal of geotechnical and geoenvironmental engineering > Vol. 134 N°4 (Avril 2008) . - pp. 541–546 Mots-clés : Fine-grained soil Model tests Barriers Clays Silts Groundwater pollution Résumé : In the present note, the susceptibility to necking of a subsurface barrier installed by the vibrating beam method in fine-grained soils is investigated by physical model tests. Two soils are investigated, a clayey soil and a silty soil. The model soil is prepared by moist tamping. The recipe of slurry in the model tests is widely used in the foundation engineering industry. The dynamic loading exerted by the vibration of the adjacent panel is simulated by a shake table. The test results show that soil plasticity and water content are the major influence factors on the susceptibility to necking. The plasticity index can be used as an indicator for the susceptibility to necking of subsurface barrier installed by the vibrating beam method in fine-grained soils. Other influence factors on necking are also investigated and their implications for practice are discussed. En ligne : http://ascelibrary.org/doi/abs/10.1061/%28ASCE%291090-0241%282008%29134%3A4%2854 [...]

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