›› 2012, Vol. 33 ›› Issue (11): 3208-3212.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Mechanical behavior test study of sludge mixed with municipal solid waste

SHI Jian-yong，WANG Juan   

  1. Key Laboratory of Ministry of Education for Geomechanics and Embankment Engineering, Hohai University, Nanjing 210098, China
  • Received:2011-09-13 Online:2012-11-12 Published:2012-11-14

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Abstract: Filling is one of the processing methods for sludge disposal. In landfill of sludge there will be some geoenvironmental problems for sludge has special engineering characteristics. Layered rolling is used in landfill and test samples are prepared under energy of standard compaction test. The test results of shear strength and permeability coefficient for sludge mixed with municipal solid waste (MSW) as well as stability analysis of slope are presented, considering the effects of leachate and pore air pressure from degradation. It is shown that the strength of sludge mixed with MSW is lower than MSW and higher than sludge; strength characteristic of sludge is improved. Permeability coefficient of sludge mixed with MSW is a light different from MSW; permeability is not obviously worse than MSW and is higher than sludge. With the increase of sludge content, slope stability will increase firstly and then decrease. The suitable mixing content of dewatered sludge will be determined by results of test and slope stability analysis. The safety factor of slope stability analysis will decrease about 15%-20% considering the effect of pore air pressure from degradation.

Key words: sludge, filling with MSW, strength, permeability, slope stability

CLC Number: 

  • X 799.3
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