Estudo de melhoramento de solo com utilização de resíduo de indústria de celulose

Abstract

This paper presents the study that evaluates, by mechanical characterization, the soil improvement using industrial residue of pulp mill known as Grits, which has verified its application in the stabilization of soil layers for use in base or under base of road pavements. Four different mixtures using Grits were prepared on the mass of dry soil in proportions of 0%, 5%, 10%, 20% divided into three samples for each mixture, totaling 12 samples. Characterization tests were performed on the soil mixtures and on clayed soil. There was also a comparison of the results of mechanical resistance tests obtained with samples of soils and with soil-Grits mixture. From the results, particularly California Bearing Ratio - CBR (Indice de Suporte California – ISC, in Brazil), was inferred that the Grits gradually had increased soil resistance, mainly in the mixture of 20%, satisfactory values for use in sub-base of pavement, according to DNIT (2006 ).