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The Effect of Construction and Demolition Waste Plastic Fractions on Wood-Polymer Composite Properties
09:06

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Published on: June 7, 2020

Compositional effects on the dynamic properties of municipal solid waste.

Pengbo Yuan1, Edward Kavazanjian, Wenwu Chen

  • 1Key Laboratory of Mechanics on Disaster and Environment in Western in China, The Ministry of Education of China, Lanzhou 730000, China.

Waste Management (New York, N.Y.)
|August 12, 2011
PubMed
Summary

This study on municipal solid waste (MSW) found that unit weight and waste composition significantly impact its dynamic properties, including shear wave velocity and modulus reduction.

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Area of Science:

  • Geotechnical Engineering
  • Waste Management Engineering

Background:

  • Municipal solid waste (MSW) characterization is crucial for understanding its behavior in landfills.
  • Dynamic properties of MSW influence landfill stability and seismic response.

Purpose of the Study:

  • To investigate the influence of waste composition and compacted unit weight on the dynamic properties of MSW.
  • To evaluate modulus reduction and damping ratio curves over a strain range of 0.01-3%.

Main Methods:

  • Large-scale cyclic simple shear tests on reconstituted MSW specimens.
  • Varied waste composition (100%, 65%, 35% passing 20mm screen) and compaction effort.
  • Consolidation under a normal stress of 75 kPa.

Main Results:

  • Shear wave velocity and small-strain shear modulus strongly depend on unit weight.
  • Unit weight influences modulus reduction and damping ratio.
  • Waste composition significantly affects damping, shear wave velocity, small-strain shear modulus, and modulus reduction.

Conclusions:

  • Both unit weight and waste composition are critical factors influencing MSW dynamic properties.
  • Interactions between unit weight and composition complicate isolated effect analysis.