Characterisation of the physico-mechanical parameters of MSW.
Following the basics of soil mechanics, the physico-mechanical behaviour of municipal solid waste (MSW) can be defined through constitutive relationships which are expressed with respect to three physical parameters: the dry density, the porosity and the gravimetric liquid content. In order to take into account the complexity of MSW (grain size distribution and heterogeneity larger than for conventional soils), a special oedometer was designed to carry out laboratory experiments. This apparatus allowed a coupled measurement of physical parameters for MSW settlement under stress. The studied material was a typical sample of fresh MSW from a French landfill. The relevant physical parameters were measured using a gas pycnometer. Moreover, the compressibility of MSW was studied with respect to the initial gravimetric liquid content. Proposed methods to assess the set of three physical parameters allow a relevant understanding of the physico-mechanical behaviour of MSW under compression, specifically, the evolution of the limit liquid content. The present method can be extended to any type of MSW.
Stoltz
Guillaume
G
LTHE, University of Grenoble, BP 53, 38041 Grenoble Cedex, France. guillaume.stoltz@ujf-grenoble.fr
Gourc
Jean-Pierre
JP
Oxarango
Laurent
L
D055598:Chemical Phenomena; D002947:Cities; D007700:Kinetics; D008422:Materials Testing; D016062:Porosity; D014866:Waste Products / Q000145:classification
D014866:Waste Products