Utilização de ensaios de campo para a avaliação da resistência mecânica de um aterro sanitário de resíduos sólidos urbanos (RSU)

Abstract

In this study, was evaluated the geomechanical behavior of the municipal solid waste (MSW) of the Metropolitan Sanitation Landfill of Caucaia (ASMOC), with emphasis on shear strength. Laboratory tests for the physical characterization of MSW, Standard Penetration Tests (SPT) and plate load test (PLT) were carried out in different time points, in an Experimental Cell and in the old existing landfill. Subsequently, based on the results of the PLT, the bearing capacity of the experimental cell and the old landfill was determined. The SPT did not reveal any tendency to increase or decrease in the penetration resistance index (NSPT) over time. The PLT showed a linear relationship between the applied pressure and the settling obtained with the plate was evident, in the experimental cell and in the old landfill, indicating the absence of the physical rupture in the mass of the requested waste. The effect of the fiber in the waste behavior could only be observed in the old landfill. In general, the old landfill had higher stiffness and bearing capacity than the experimental cell.