Triaxial Tests of Deformation Characteristics of Bottom Ash from Municipal Solid Waste Incineration

doi:10.3969/j.issn.1000-565X.2016.07.018

Abstract

Abstract: In order to discover the deformation characteristics of MSWI (Municipal Solid Waste Incineration) bot- tom ash,the material characteristics were analyzed,and consolidated triaxial draining compression tests were car- ried out for the samples with various particle size distribution and immersion time as well as for the remoulded sam- ples after destruction.Thus,the stress-strain curves and effective stress ratio curves of MSWI bottom ash at diffe- rent confining pressures were obtained.The results show that (1) particle size distribution and immersion time are two important factors influencing the deformation characteristics of MSWI bottom ash; (2) for the samples with a particle size being less than 2mm,the strength decreases as the content of large-size particles increases and slightly decreases with the prolonging of immersion time; (3) the strength of remoulded MSWI bottom ash decreases after the destruction; and (4) in comparison with that of the standard sand,the peak of stress-strain curve of MSWI bot- tom ash appears relatively faster.

Key words: municipal solid waste, bottom ash, particle size distribution, immersion time, confining pressure, con- solidated draining compression test

SONG Dan-qing XIANG Guo-sheng. Triaxial Tests of Deformation Characteristics of Bottom Ash from Municipal Solid Waste Incineration[J]. Journal of South China University of Technology (Natural Science Edition), 2016, 44(7): 116-122.

References

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