Estudo da variação da resistência ao cisalhamento do resíduo solido urbano devido a presença de plástico mole

Abstract

The influence of soft plastic in shear strength of municipal solid waste (MSW) has been a constant target of study because of its enormous importance in this matter. However, this is a complex issue, since there are many variables related to the problem, such as the amount of plastic influence of wastewater in contact with the plastic, the plastic slope in relation to shear and normal stresses, resistance tensile plastic, issues related to the mobilization of efforts by resistant plastic, etc. The present work aims to study the variables involved regarding the contribution of the soft plastic in shear strength of municipal solid waste. For this study, we used two types of materials: a granular soil and organic compost from MSW in the presence or absence of soft plastic. The influence of wastewater on contribution of resistance due to the soft plastic was also analyzed. Direct shear test were performed for all cases. It has been observed that there is an average increase of 15% in the resistance of the granular soil in the presence of soft plastic, but the organic compost from MSW had an increase of only 10% when incorporating the soft plastic material. This indicates that there is a contribution from soft plastic with respect to shear and normal stresses on the shear strength of MSW, and this study is important for a better understanding of the strength parameters of MSW landfills.