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| This paper presents experimental results on geotechnical properties of municipal solid waste (MSW) at different biodegradation phases. The shear strength of fresh and landfilled municipal solid waste was determined by large direct shear tests (LDS). For fresh samples, the cohesion was increased from 0kPa to 19.89kPa, and the friction angle decreased from 27.84 to 14.41 as biodegradation degree increased from 0 to 63.83%.. For the triaxial tests under the consolidation drained (CD) condition, the shear strength of cohesion and friction angle for degraded samples presents a continuous increasing when the defined axial strain is increased from 5% to 20%, and the cohesion is vary from 35.90kPa to 66.42kPa, the drained friction angle ranged from 29 to37 . A narrow range for organic content and temperature that better for biodegradation and creep settlement were found in the creep tests, and it was ranged from 21.9% to 36.47%, 22 to 41 , respectively. The test results are useful for assessing the stability and creep settlement of landfills located in ChongQing city, in China. |
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| Keywords:Municipal solid waste; Shear strength; Biodegradation; Creep settlement; Leachate |
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