Avaliação dos parâmetros de adensamento de um solo tropical sob influência da adição de rejeito da usina de etanol

Abstract

The production of ethanol represents an expanding area. This production generates a large amount of tailings, which are difficult to discard because of their pollutant potential. These residues have been studied to discover the effects that the application of this residue has on the characteristics and properties of the soils, such as pH, availability of nutrients, and the feasibility of using such wastes as fertilizers. Research on the mechanical effects of applying vinasse doses to the soil is still very incipient. This work aims to study the influence caused by the addition of waste(vinasse and fibers) from ethanol plants in a tropical soil of the metropolitan region of Goiânia, in the area of densification. The density of a soil is of paramount importance for civil engineering. In order to determine the soil densification parameters, edometric tests will be performed, with soil samples added with tailings and without the addition of vinasse and fiber residues. The soil samples and tailings were selected based on previously developed works at the Federal Institute of Education, Science and Technology of Goiás - Campus Goiânia. The densification parameters will be obtained through edometric compression tests, with the loading nominal pressure 0.5; 1.0; 2.0; 4.0 kgf/cm² and unloading nominal pressure 2.0 kgf/cm². After obtaining the parameters, a comparison will be made of the results obtained with the results obtained from the soil without additions, in order to prove the occurrence of soil reinforcement and corroborate with the discovery of new alternatives for the disposal of ethanol plant residues, such as vinasse and fibers