Aging and compressibility of municipal solid wastes

Chen, Yunmin; Zhan, Tony L. T.; Wei, Hua; Han, Ke

doi:10.1016/j.wasman.2008.02.024

Cited by 105 publications

(47 citation statements)

References 12 publications

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“…The void ratios of the synthetic MSWs are also located close to the best-fitting line of field-measured MSW data in the Suzhou Qizishan landfill, as shown in Fig. 2 (Chen et al 2009). Figure 3 shows the compressibility curves of these synthetic MSWs, which are slightly lower than those of the MSW samples that were taken from the Suzhou Qizishan landfill in China as reported by MOHURD (2012).…”

Section: Preparation Of Synthetic Mswssupporting

confidence: 67%

“…1, the total unit weights of the synthetic MSWs coincide with the distribution of those of the MSWs in the Suzhou Qizishan landfill in China (Chen et al 2009). According to the Ministry of Housing and Urban-Rural Development of the People's Republic of China (MOHURD 2012), it was suggested that the distribution of the total unit weight of MSW samples taken from the five boreholes (BH1-BH5) in the Suzhou Qizishan landfill could be addressed using eqs.…”

Section: Preparation Of Synthetic Mswsmentioning

confidence: 88%

“…The Suzhou Qizishan landfill is a typical landfill in the rainy region of Southern China, and it has been investigated previously through field and laboratory tests by Zhan et al (2008) and Chen et al (2009). Five boreholes (BH1-BH5) were drilled to the bottom of the landfill, and MSW samples were taken to determine their basic engineering characteristics including their composition, unit weight, void ratio, water content, compressibility, permeability, and shear strength.…”

Section: Preparation Of Synthetic Mswsmentioning

confidence: 99%

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Centrifuge modeling of municipal solid waste landfill failures induced by rising water levels

Chen

Yang

et al. 2017

Can. Geotech. J.

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New types of synthetic municipal solid wastes (MSWs) were developed, exhibiting engineering characteristics similar to those of real MSWs at different states of degradation in terms of total unit weight, void ratio, water content, compressibility, permeability, stress-strain relationship, and shear strength. Using these synthetic MSWs, several centrifuge model tests on the stability of geosynthetics-lined landfills with rising water levels were performed. The test results revealed the developing processes of MSW landfill failures induced by rising water levels. In most tests, a continuous slide occurred once a critical water level was attained. The ratio of critical water level and landfill height was 0.75-0.92 for present model tests using fresh or partly degraded synthetic MSWs with landfill slope ratio of 1:1-1:3, increasing with the increases of MSW degradation states and decreases of the slope ratio. An engineered berm increased the critical water level by 1.3%-9.5%. The landfills without an engineered berm tended to slide along the bottom liner; however, for normal landfills with an engineered berm and a slope ratio of 1:3, penetrating cracks developed when the failures occurred. These results provide a good reference for water level and stability control of the landfill, and the construction of an engineered berm is suggested to improve the stability of these landfills. Mots-clés : déchets municipaux solides, décharges de déchets, essais sur modèle centrifuge, niveau d'eau critique, rupture de pente.

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Section: Preparation Of Synthetic Mswssupporting

confidence: 67%

Section: Preparation Of Synthetic Mswsmentioning

confidence: 88%

Section: Preparation Of Synthetic Mswsmentioning

confidence: 99%

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Centrifuge modeling of municipal solid waste landfill failures induced by rising water levels

Chen

Yang

et al. 2017

Can. Geotech. J.

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“…According to the data from management department of Laogang Incineration Plant and Lan (2012), the received MSW had a food waste content of about 60% and an initial moisture content of nearly 64% in summer days. In addition, the average height of the MSW pile was 23.5 m, then the average unit weight was calculated as 10.1 kN/m 3 based on the unit weight profile suggested by Chen et al (2009). In addition, a surcharge loading of σ p was applied on top of the MSW pile, and the leachate could flow out freely from the bottom.…”

Section: Predicting Of Leachate Production Of Msw Pilementioning

confidence: 99%

Time- and stress-dependent model for predicting moisture retention capacity of high-food-waste-content municipal solid waste: based on experimental evidence

Zhan

et al. 2016

J. Zhejiang Univ. Sci. A

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Moisture retention capacity (MRC) is a key parameter for the prediction of leachate production of a municipal solid waste (MSW) pile. In this paper, five sets of laboratory tests were conducted in compression cells to characterize the variation of MRC with degradation time and overburden stress. Set A was conducted on the fresh high-food-waste-content (HFWC)-MSW under different degradation conditions and a sustained stress; Set B was on the fresh HFWC-MSW by alternation of degradation time and incremental stresses; Sets C, D, and E were on fresh HFWC-MSW, zero-food-waste-content (NFWC)-MSW, and decomposed MSW, respectively, being subjected to incremental stresses. The following findings were obtained from the test results: (1) The MRC of fresh HFWC-MSW decreased exponentially with degradation time under a sustained stress. The higher waste temperature or oxygen introduction would result in a faster declining of MRC. (2) The MRCs decreased linearly with a logarithmic increase of stress for all the MSW samples with different food waste contents. The MRC of HFWC-MSW was higher than that of NFWC-MSW under a given stress, and the decomposed MSW took the second place. (3) The variation of MRC appeared to be independent of stress path in terms of stress and degradation time. Based on the test results, the dependencies of the MRC of HFWC-MSW on degradation and stress were interpreted. Then, a time-and stress-dependent model was proposed for predicting the MRC of HFWC-MSW. The model was relatively simple and convenient for design purposes, and was verified by the measured data of leachate production at the pretreatment container of Laogang Incineration Plant. Finally, the model was developed to evaluate the dewatering effect of the HFWC-MSW pile. The strategy of combining the degradationenhancing measures with stress-increasing measures is recommended in a rapid dewatering project.

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“…-Método 3 -Extração de amostras "indeformadas" (Environmental Services, 1995b, apud Morochnik et al, 1998Burlingame et al, 2007;Singh et al, 2009;Zhan et al, 2008;Stoltz et al, 2009;Chen et al, 2009, entre outros).…”

Section: Peso Específico De Maciços De Rsuunclassified

Investigação geofísica e resistência ao cisalhamento de resíduos sólidos urbanos de diferentes idades

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Aging and compressibility of municipal solid wastes

Cited by 105 publications

References 12 publications

Centrifuge modeling of municipal solid waste landfill failures induced by rising water levels

Centrifuge modeling of municipal solid waste landfill failures induced by rising water levels

Time- and stress-dependent model for predicting moisture retention capacity of high-food-waste-content municipal solid waste: based on experimental evidence

Investigação geofísica e resistência ao cisalhamento de resíduos sólidos urbanos de diferentes idades

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