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Compaction characteristics of municipal solid waste / James L. Hanson in Journal of geotechnical and geoenvironmental engineering, Vol. 136 N° 8 (Août 2010) 

Public ISBD [article]  in Journal of geotechnical and geoenvironmental engineering > Vol. 136 N° 8 (Août 2010) . - pp. 1095-1102 Titre : Compaction characteristics of municipal solid waste Type de document : texte imprimé Auteurs : James L. Hanson, Auteur ; Nazli Yesiller, Auteur ; Shawna A. Von Stockhausen, Auteur Année de publication : 2010 Article en page(s) : pp. 1095-1102 Note générale : Géotechnique Langues : Anglais (eng) Mots-clés : Compaction  Waste  compaction  Municipal  solid  waste  Landfill  Municipal  solid  waste  landfill Index. décimale : 624.1 Infrastructures.Ouvrages en terre. Fondations. Tunnels Résumé : Compaction characteristics of municipal solid waste (MSW) were determined in the laboratory and in the field as a function of moisture content, compactive effort, and seasonal effects. Laboratory tests were conducted on manufactured wastes using modified and 4X modified efforts. Field tests were conducted at a MSW landfill in Michigan on incoming wastes without modifications to size, shape, or composition, using typical operational compaction equipment and procedures. Field tests generally included higher efforts and resulted in higher unit weights at higher water contents than the laboratory tests. Moisture addition to wastes in the field was more effective in winter than in summer due to dry initial conditions and potential thawing and softening of wastes. The measured parameters in the laboratory were γdmax-mod = 5.2 kN/m3, wopt-mod = 65%, γdmax-4×mod = 6.0 kN/m3, and wopt-4×mod = 56%; in the field with effort were γdmax-low = 5.7 kN/m3, wopt-low = 70%; γdmax-high = 8.2 kN/m3, and wopt-high = 73%; and in the field with season were γdmax-cold = 8.2 kN/m3, wcold = 79.5%, γdmax-warm = 6.1 kN/m3, and wwarm = 70.5%. Soil compaction theory was reasonably applicable to wastes with the exception that the Gs of waste solids increased with compactive effort resulting in steep degree of saturation curves and low change in wopt between efforts. Moisture addition to wastes during compaction increased the workability, the unit weight, and the amount of incoming wastes disposed, and reduced the compaction time. The combined effects have significant environmental and economic implications for landfill operations. DEWEY : 624.1 ISSN : 1090-0241 En ligne : http://ascelibrary.org/gto/resource/1/jggefk/v136/i8/p1095_s1?isAuthorized=no [article] Compaction characteristics of municipal solid waste [texte imprimé] / James L. Hanson, Auteur ; Nazli Yesiller, Auteur ; Shawna A. Von Stockhausen, Auteur . - 2010 . - pp. 1095-1102. Géotechnique Langues : Anglais (eng) in Journal of geotechnical and geoenvironmental engineering > Vol. 136 N° 8 (Août 2010) . - pp. 1095-1102 Mots-clés : Compaction  Waste  compaction  Municipal  solid  waste  Landfill  Municipal  solid  waste  landfill Index. décimale : 624.1 Infrastructures.Ouvrages en terre. Fondations. Tunnels Résumé : Compaction characteristics of municipal solid waste (MSW) were determined in the laboratory and in the field as a function of moisture content, compactive effort, and seasonal effects. Laboratory tests were conducted on manufactured wastes using modified and 4X modified efforts. Field tests were conducted at a MSW landfill in Michigan on incoming wastes without modifications to size, shape, or composition, using typical operational compaction equipment and procedures. Field tests generally included higher efforts and resulted in higher unit weights at higher water contents than the laboratory tests. Moisture addition to wastes in the field was more effective in winter than in summer due to dry initial conditions and potential thawing and softening of wastes. The measured parameters in the laboratory were γdmax-mod = 5.2 kN/m3, wopt-mod = 65%, γdmax-4×mod = 6.0 kN/m3, and wopt-4×mod = 56%; in the field with effort were γdmax-low = 5.7 kN/m3, wopt-low = 70%; γdmax-high = 8.2 kN/m3, and wopt-high = 73%; and in the field with season were γdmax-cold = 8.2 kN/m3, wcold = 79.5%, γdmax-warm = 6.1 kN/m3, and wwarm = 70.5%. Soil compaction theory was reasonably applicable to wastes with the exception that the Gs of waste solids increased with compactive effort resulting in steep degree of saturation curves and low change in wopt between efforts. Moisture addition to wastes during compaction increased the workability, the unit weight, and the amount of incoming wastes disposed, and reduced the compaction time. The combined effects have significant environmental and economic implications for landfill operations. DEWEY : 624.1 ISSN : 1090-0241 En ligne : http://ascelibrary.org/gto/resource/1/jggefk/v136/i8/p1095_s1?isAuthorized=no