Stress–strain responses and yielding characteristics of a municipal solid waste (MSW) considering the effect of the stress path

Li, Xiulei; Shi, Jianyong

doi:10.1007/s12665-014-3674-y

Cited by 5 publications

(2 citation statements)

References 24 publications

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“…The SW samples were manually prepared according to MSW components sorted from Chinese landfills to include kitchen waste (24%), paper (12%), bamboo (5%), fibre (4%), and plastics (12%) (Liu et al, 2020; Pecorini et al, 2016; Pendyala et al, 2016; Shi et al, 2016). A solution of 1% sodium ortho-phenyl phenol was used to regulate the sample moisture content to saturation to inhibit degradation and gas production of organic components during sample preparation and tests (Li and Shi, 2015). To conduct consolidated drained triaxial shear tests on the prepared SW samples at different temperatures, a heating belt was added on the advanced stress path triaxial test apparatus (Li and Shi, 2015) to control the temperature of the test process (Figure 1).…”

Section: Methodsmentioning

confidence: 99%

“…A solution of 1% sodium ortho-phenyl phenol was used to regulate the sample moisture content to saturation to inhibit degradation and gas production of organic components during sample preparation and tests (Li and Shi, 2015). To conduct consolidated drained triaxial shear tests on the prepared SW samples at different temperatures, a heating belt was added on the advanced stress path triaxial test apparatus (Li and Shi, 2015) to control the temperature of the test process (Figure 1). The temperature was controlled at 20°C, 40°C, and 60°C with precision of ±0.1°C.…”

Section: Methodsmentioning

confidence: 99%

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Effect of elevated temperature on solid waste shear strength and landfill slope stability

Shi

Shu

et al. 2020

Waste Manag Res

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Slope instability occurs in landfills owing to increased internal temperatures. However, strength characteristic tests for solid waste (SW) and landfill slope stability (SS) calculations that consider temperature variations are scarce in the literature. In this study, we conducted triaxial tests on SW under a range of temperature conditions and proposed the circular slide method (CSM) for calculating SS in consideration of temperature effects. SW cohesion decreased linearly with increasing temperature, whereas the internal friction angle remained essentially unchanged. Our results showed that higher temperatures reduced the SW shear strength, changing the most dangerous sliding arc away from the slope toe. The landfill slope safety factor decreased by more than 20% with an increase of the maximum temperature from 20°C to 50°C. Reduction of the leachate level (LL) led to a decrease in the landfill high-temperature zone and the safety factor increased according to LL and temperature distribution. If cooling pipes are used to control the SW temperature, we recommend arranging the cooling pipes on the landfill liner. The proposed CSM can be used to analyse landfill SS.

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