Journal
JOURNAL OF HAZARDOUS TOXIC AND RADIOACTIVE WASTE
Volume 26, Issue 1, Pages -Publisher
ASCE-AMER SOC CIVIL ENGINEERS
DOI: 10.1061/(ASCE)HZ.2153-5515.0000659
Keywords
Municipal solid waste (MSW) fine fractions; Cyclic triaxial test (CTT); Dynamic shear modulus; Damping ratio
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This study focuses on the potential use of fine fractions of municipal solid waste (MSW) for geotechnical applications, particularly in seismic-prone regions. A series of consolidated undrained cyclic triaxial tests were conducted to investigate the dynamic properties of the MSW fines under different parameters. The results indicate that relative compaction, effective confinement, and strain amplitude have a significant influence on the dynamic properties of the MSW fines.
The study focuses on the potential use of municipal solid waste (MSW) fine fractions, that is, fraction below 4.75 mm size for geotechnical applications (backfill/embankment material). In addition, the utilization of these MSW fine fractions in seismic-prone regions demand the dynamic characterization of the material under dynamic loading conditions before its application in the field. Hence, to check the influence of different parameters, that is, relative compaction, effective confining pressure, loading frequency, and strain amplitude on dynamic shear modulus (G) and damping ratio (D) of MSW fines, a set of 44 consolidated undrained cyclic triaxial tests (CTT) were performed. The investigation verifies that some parameters, such as relative compaction, effective confinement, and strain amplitude, have a more significant influence on the dynamic properties of the considered MSW fine fractions than do others, such as loading frequency. The results of this dynamic study can be successfully implemented using the considered MSW fine fractions as soil replacement. (c) 2021 American Society of Civil Engineers.
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