Abstract
This note is related to a proposed vertical expansion of an existing municipal solid waste landfill situated in the north of Belgium. The interesting aspect of this landfill is the fact that the side slopes are composed of series of compacted inorganic waste bales. One of the main concern in this type of project is the possibility of slippage between the compacted bales. Large direct shear tests on waste were conducted in order to obtain the interface friction between the compacted bales of inorganic refuse. It was found that the stress strain relationship shows no peak data unlike tests with soil materials. More over the friction angle was found to be strain dependent.
