Experimental and coupling analysis of municipal solid waste (MSW) shear strength under multiple influencing parameters
Muhammad Muneer, Dequan Kong, Rong Wan, Xinyang Liu, Qingxiang Song, Masood ur Rahman
TL;DR
This study examines how environmental factors interact to affect the shear strength of municipal solid waste in landfills, helping improve landfill stability and safety.
Contribution
The study integrates multiple environmental factors and uses statistical modeling to predict shear strength changes in MSW over time.
Findings
Cohesion (c) decreased to 0.17 kPa at 190 days, while internal friction (φ) increased to 42.39°.
Moisture content of 130%, organic matter of 15–30%, and temperatures of 10–35°C yielded high cohesion values.
Modified Mohr–Coulomb and regression models predicted c and φ with R² values of 0.622 and 0.468.
Abstract
The production of municipal solid waste (MSW) in China is growing rapidly, and landfill is the primary treatment method. The shear strength of MSW is crucial to the stability and safety of landfills. However, there is limiting research available on how different environmental and compositional factors interactively influence MSW shear strength since some existing studies typically examine these variables in isolation. Through integrated testing and statistical modeling this looks into how environmental factors (moisture content 30–230%, organic matter content 15–75%, temperature 10–65°C and degradation time 15–190days) work together to change the shear strength of MSW. One hundred MSW samples were prepared according to field waste composition from Xi’an and were subjected to direct shear tests over a 190-day degradation period. The test results show that cohesion (c) decreased over…
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Taxonomy
TopicsLandfill Environmental Impact Studies · Municipal Solid Waste Management · Recycling and utilization of industrial and municipal waste in materials production