Static and dynamic loading effects on the strength characteristic of municipal solid waste (MSW) fines reinforced with geosynthetics

Abstract

The study investigates the influence of geonet and non-woven geotextile reinforcement on the strength performance of municipal solid waste (MSW fines). A set of unconsolidated undrained static and dynamic triaxial tests was conducted on the reinforced MSW fines samples by a varying number of reinforcement layers (0, 1, 2 and 3) to investigate the stress-strain and strength behaviour of the composite material. The MSW fines (particle size < 4.75 mm) inherently exhibit limited mechanical strength and required the use of additional ground improvement procedures to make them suitable for practical field applications. Although laboratory tests have shown improvements in the static strength of the investigated MSW fines when reinforced, due to the lack of any observed improvements in its dynamic strength characteristics, concerns continue regarding the viability of using this composite material in high seismic zones. © 2023, Indian Academy of Sciences.