Dynamic Properties of Municipal Solid Waste

Zekkos, Dimitrios; Matasović, Neven; El-Sherbiny, Rami; Athanasopoulos-Zekkos, Adda; Towhata, Ikuo; Maugeri, M.

doi:10.1061/41146(395)4

Cited by 16 publications

(20 citation statements)

References 10 publications

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“…The average depth of waste from the surface of the landfill to the leachate collection system at the time when the experiment was conducted was approximately 20 m. The apparent in situ bulk density of the landfilled waste was estimated to be approximately 700 kg/m 3 ; the apparent in situ bulk density was estimated based on the mass of waste deposited in the landfill and the landfill volume estimated by topographic surveys of the site. The density was within the reported range of 300 kg/m 3 to 2,100 kg/m 3 for compacted waste [ 10 , 11 ]. A clayey-sandy soil mined on site was used as daily cover.…”

Section: Methodssupporting

confidence: 69%

Temporal and Spatial Pore Water Pressure Distribution Surrounding a Vertical Landfill Leachate Recirculation Well

Kadambala

Townsend

Jain³

et al. 2011

IJERPH

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Addition of liquids into landfilled waste can result in an increase in pore water pressure, and this in turn may increase concerns with respect to geotechnical stability of the landfilled waste mass. While the impact of vertical well leachate recirculation on landfill pore water pressures has been mathematically modeled, measurements of these systems in operating landfills have not been reported. Pressure readings from vibrating wire piezometers placed in the waste surrounding a liquids addition well at a full-scale operating landfill in Florida were recorded over a 2-year period. Prior to the addition of liquids, measured pore pressures were found to increase with landfill depth, an indication of gas pressure increase and decreasing waste permeability with depth. When liquid addition commenced, piezometers located closer to either the leachate injection well or the landfill surface responded more rapidly to leachate addition relative to those far from the well and those at deeper locations. After liquid addition stopped, measured pore pressures did not immediately drop, but slowly decreased with time. Despite the large pressures present at the bottom of the liquid addition well, much smaller pressures were measured in the surrounding waste. The spatial variation of the pressures recorded in this study suggests that waste permeability is anisotropic and decreases with depth.

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Section: Methodssupporting

confidence: 69%

Temporal and Spatial Pore Water Pressure Distribution Surrounding a Vertical Landfill Leachate Recirculation Well

Kadambala

Townsend

Jain³

et al. 2011

IJERPH

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“…Their results demonstrated that the brous waste constituents had signi cant impact on the sti ness and material damping of MSW. The reported data were in accordance with the ndings by Zekkos [32].…”

Section: Introductionsupporting

confidence: 91%

“…It should be noted that, depending on the size of the prepared specimen, limitations exist on the maximum advisable particle size. In this regard, referring to Zekkos [32], the maximum size of sti bulky waste particles was considered 1/6 the specimen diameter while for soft brous waste particles, the size was limited to 1/3 the specimen diameter. Therefore, some components were removed prior to sample preparation to prevent the possible problems (such as unexpected tearing of membrane) in prepared samples.…”

Section: Materials Characterization and Specimen Preparationmentioning

confidence: 99%

“…The development of shear wave velocity pro le is necessary to estimate the small-strain sti ness of the land ll using the following equation, according to Zekkos et al [17]:…”

Section: Introductionmentioning

confidence: 99%

“…The e ect of age or degradation of MSW on its dynamic properties has been reported by various researchers. Zekkos [32] evaluated the e ects of di erent parameters on the dynamic properties of MSW samples from Tri-City Land ll. The author reported that the composition of the waste was the most important factor that signi cantly a ected both the absolute value of shear modulus as well as the shape of the shear modulus reduction curve and the material damping curves.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Effects of aging on dynamic properties of MSW: A case study from Kahrizak Landfill, Tehran, Iran

et al. 2017

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The e ect of aging on dynamic properties of Municipal Solid Waste (MSW) including damping ratio and shear modulus was investigated in the current research. For this purpose, a series of cyclic Consolidated Undrained (CU) triaxial tests were performed on fresh and old reconstituted cylindrical specimens, taken from Mansoory Prototype Land ll (MPL) placed in Kahrizak Land ll, Tehran, Iran. The results showed that the shear modulus of old samples (7.5 years old) was more than that of the fresh ones. This trend can be attributed to decomposition of waste over time, which leads to reduction in organic content and, consequently, increment of brous waste particles (plastics) of the old samples. On the other hand, the results also indicated that the damping ratio was partially dependent on the composition of the specimen and it slightly decreased with increasing the age of MSW. The high percentage of organic content in fresh specimens can be considered as the main reason for this behavior. Finally, the normalized shear modulus reduction and strain-dependent material damping curves were prepared for both ages of retrieved MSW from Kahrizak Center Land ll (KCL). The results of the current study are in the range reported in the technical literature and can be used as reliable data for seismic purposes.

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Study on cyclic strength and pore water pressure response of fiber-reinforced municipal solid waste (MSW) fines

Rawat

Mohanty

2023

Acta Geotech.

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Dynamic Properties of Municipal Solid Waste

Cited by 16 publications

References 10 publications

Temporal and Spatial Pore Water Pressure Distribution Surrounding a Vertical Landfill Leachate Recirculation Well

Temporal and Spatial Pore Water Pressure Distribution Surrounding a Vertical Landfill Leachate Recirculation Well

Effects of aging on dynamic properties of MSW: A case study from Kahrizak Landfill, Tehran, Iran

Study on cyclic strength and pore water pressure response of fiber-reinforced municipal solid waste (MSW) fines

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