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Moisture retention properties of municipal solid waste in relation to compression / Guillaume Stoltz in Journal of geotechnical and geoenvironmental engineering, Vol. 138 N° 4 (Avril 2012) 

Public ISBD [article]  in Journal of geotechnical and geoenvironmental engineering > Vol. 138 N° 4 (Avril 2012) . - pp. 535–543 Titre : Moisture retention properties of municipal solid waste in relation to compression Type de document : texte imprimé Auteurs : Guillaume Stoltz, Auteur ; Anne-Julie Tinet, Auteur ; Matthias J. Staub, Auteur Année de publication : 2012 Article en page(s) : pp. 535–543 Note générale : Géologie appliquée Langues : Anglais (eng) Mots-clés : Municipal  solid  waste  (MSW)  Compression  Controlled  suction  oedometer  Moisture  retention  curve  Pore  size  distribution Résumé : Original laboratory setups are used to study the moisture retention properties of municipal solid waste taking into account the porous medium’s structural evolution from compression. A controlled suction oedometer allowed the moisture retention curves (MRCs) of compacted samples to be determined for both wetting and drainage with a matric suction range of 0 to 10 kPa. Another setup utilizing an extraction plate was used to determine a drainage MRC for a noncompacted sample with matric suction varying from 0 to 450 kPa. The experimental results demonstrated the complexity of municipal solid waste (MSW) porous medium compared to soil. The MRC of lightly and uncompacted samples did not exhibit a measurable air-entry suction. Moreover, significant hysteresis between the wetting and drainage MRCs was observed. The experimental MRCs were interpreted with two different models, and a pore size distribution evolution with compression was proposed. Finally, the concept of field capacity in relation to the moisture retention properties is discussed. DEWEY : 624.1 ISSN : 1090-0241 En ligne : http://ascelibrary.org/doi/abs/10.1061/%28ASCE%29GT.1943-5606.0000616 [article] Moisture retention properties of municipal solid waste in relation to compression [texte imprimé] / Guillaume Stoltz, Auteur ; Anne-Julie Tinet, Auteur ; Matthias J. Staub, Auteur . - 2012 . - pp. 535–543. Géologie appliquée Langues : Anglais (eng) in Journal of geotechnical and geoenvironmental engineering > Vol. 138 N° 4 (Avril 2012) . - pp. 535–543 Mots-clés : Municipal  solid  waste  (MSW)  Compression  Controlled  suction  oedometer  Moisture  retention  curve  Pore  size  distribution Résumé : Original laboratory setups are used to study the moisture retention properties of municipal solid waste taking into account the porous medium’s structural evolution from compression. A controlled suction oedometer allowed the moisture retention curves (MRCs) of compacted samples to be determined for both wetting and drainage with a matric suction range of 0 to 10 kPa. Another setup utilizing an extraction plate was used to determine a drainage MRC for a noncompacted sample with matric suction varying from 0 to 450 kPa. The experimental results demonstrated the complexity of municipal solid waste (MSW) porous medium compared to soil. The MRC of lightly and uncompacted samples did not exhibit a measurable air-entry suction. Moreover, significant hysteresis between the wetting and drainage MRCs was observed. The experimental MRCs were interpreted with two different models, and a pore size distribution evolution with compression was proposed. Finally, the concept of field capacity in relation to the moisture retention properties is discussed. DEWEY : 624.1 ISSN : 1090-0241 En ligne : http://ascelibrary.org/doi/abs/10.1061/%28ASCE%29GT.1943-5606.0000616