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《Advances in Science and Technology of Water Resources》 2011-01
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Grouting improvement of foundation of municipal solid waste

GAO Hai1,Shi Jian-yong1,CHEN Ji-dong2,AI Ying-bo1,ZHANG Kun-yong1 (1.Key Laboratory of MOE of Geomechanics and Dam Engineering,Hohai University,Nanjing,210098,China;2.Shenzhen Yulongkeng Municipal Solid Waste Treatment Center,Shenzhen 518000,China)  
Based on the in-situ grouting tests,the mass fraction of cement was analyzed by boring samples of municipal solid waste after cement grouting.The cement was uniformly distributed over the foundation of municipal solid waste,and the mass fraction of cement reached 10% after the first grouting and increased to 25% after the second grouting.Through the strength tests on laboratory cement-waste samples after curing of 28 days,the stress-strain relation of the cement-waste samples exhibited hardening characteristics even when the dosage of cement reached 25% and the curing age was 60 days,and the cement-waste samples were loose and not consolidated.The static load tests on the foundation of municipal solid waste before and after grouting indicated that the bearing properties of the foundation of municipal solid waste could be improved by grouting,and the bearing capacity was obviously raised.However,the failure mode of the foundation of municipal solid waste after the second grouting was brittle because of the restricted in-situ curing conditions.
【CateGory Index】: TU753
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