Examining the Short Period Settlement of Municipal Solid Waste Samples

Abstract

It is necessary to know the deformation behavior of the waste deposits during operation and utilization of the area after closure, too. The waste body was examined, the samples were taken from different depths (samples of varying degrees of degradation). We determined consolidation and compression curves, Poisson - ratio and oedometric modulus to the given waste body taking into consideration the degradation degree, too. The prerequisite of modeling and calculating the settlement is to know the load – deformation – time relation and to describe this complicated physical – chemical and biological process in a mathematical way. After deposition and loading the main part of deformation is the so-called strain dependent one of short period, which is completed by deformation due to biodegradation later. To describe the deformation of short period we tried to apply the consolidation models, which had to be modified by applying immediate compression, and rheological models.