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Soil investigation of fly ash deposit improved by heavy compaction method / T. Kokusho in Journal of geotechnical and geoenvironmental engineering, Vol. 138 N° 6 (Juin 2012) 

Public ISBD [article]  in Journal of geotechnical and geoenvironmental engineering > Vol. 138 N° 6 (Juin 2012) . - pp. 738–746 Titre : Soil investigation of fly ash deposit improved by heavy compaction method Type de document : texte imprimé Auteurs : T. Kokusho, Auteur ; S. Nakashima, Auteur ; A. Kubo, Auteur Année de publication : 2012 Article en page(s) : pp. 738–746 Note générale : Géotechnique Langues : Anglais (eng) Mots-clés : Fly  ash  deposit  Heavy  compaction  Cone  penetration  test  Pore  pressure  Liquefaction Résumé : An in situ test program was undertaken to systematically investigate the effectiveness of the heavy compaction method (HCM) normally used for sandy soils for compacting fly ash deposit. Measurements of soil performance and cone penetration tests before and after the compaction were carried out, indicating obvious effects on soil properties and strength increase in the improved ground. It has been found that HCM introduces three-dimensional (3D) nonuniformity in the upper part versus horizontally uniform layers in the lower part of the improved ground. Also found is that the HCM-induced vertical soil strain is almost proportional to the ratio of cone resistance increment to the prior-treatment cone resistance in the uniform zones. ISSN : 1090-0241 En ligne : http://ascelibrary.org/doi/abs/10.1061/%28ASCE%29GT.1943-5606.0000644 [article] Soil investigation of fly ash deposit improved by heavy compaction method [texte imprimé] / T. Kokusho, Auteur ; S. Nakashima, Auteur ; A. Kubo, Auteur . - 2012 . - pp. 738–746. Géotechnique Langues : Anglais (eng) in Journal of geotechnical and geoenvironmental engineering > Vol. 138 N° 6 (Juin 2012) . - pp. 738–746 Mots-clés : Fly  ash  deposit  Heavy  compaction  Cone  penetration  test  Pore  pressure  Liquefaction Résumé : An in situ test program was undertaken to systematically investigate the effectiveness of the heavy compaction method (HCM) normally used for sandy soils for compacting fly ash deposit. Measurements of soil performance and cone penetration tests before and after the compaction were carried out, indicating obvious effects on soil properties and strength increase in the improved ground. It has been found that HCM introduces three-dimensional (3D) nonuniformity in the upper part versus horizontally uniform layers in the lower part of the improved ground. Also found is that the HCM-induced vertical soil strain is almost proportional to the ratio of cone resistance increment to the prior-treatment cone resistance in the uniform zones. ISSN : 1090-0241 En ligne : http://ascelibrary.org/doi/abs/10.1061/%28ASCE%29GT.1943-5606.0000644