Análise da composição e do peso específico dos resíduos sólidos urbanos com um ano de aterramento dispostos em aterro sanitário.

Abstract

The increase of the requirements for the understanding of esistance and the stability of the landfill massifs requires that he techincal personnel have a higher level of knowledge about the physical and mechanical properties of the materials involved. The objective of this work is to analyze the gravimetric composition and the specific gravity of the Ubarm Solid Wast (USW) deposited in the Landfill in Campina Grande, PB with a year of grouding. The methodology of this work comprised the gravimetric composition and the apparent weight in situ of the waste with one year of grounding. For this, a sample of RSU was colleted in an area between cells 1 and cells 2, releating to the deposits in the year 2018. These residues were heavy and quarteted to determine the gravimetric composition, in the excavacation where the materials excavated was determined the specific weight in situ. For the gravimetric composition of the residues it was found a value of 66,73% of mixed matirial deposited in the ASCG, maybe it was composite of organic matter and soil. Only 4,88% of the collected residues are composed of organic matter. In this sense, the higher is the percentage of organic matter the higher will be the influence on the compressibility of the landfill and a lower shear strenght of the massive. The results of the specific gravity was 19,375 kN/m³, indicates that the grounding of the waste increases the value of its specific weight over time and that the additions of these parameters have directly related to the increase of resistance and stability of the embankment, leaning to increase the shear strength of the RSU.