STUDY OF THE STABILIZATION OF VICOSA`S SOIL WITH LIME AND BITUMEN.
The use of chemical stabilization with lime and bitume has a good behavior when mixed with expansive soils at Vicosa City.
This article attempts to the chemical stabilization with lime and bitumen to use in the highways pavements.
The reasons to use the lime-soil stabilization justify in the theory that the bitumen materials can to be used with efficiency in the soil that is easily pulverized because in the cross case, the soil`s grain cannot to be revetment with stabilized material, resulting in the mixtures with low mechanical strength.
According the last paragraph, this research tried to make a basic study of the laboratory to recover the efficiency of the chemical stabilization of the a soil type, with argillaceous characteristics at the Vicosa City, Minas Gerais State, with lime and bitumen.
In this study, the researchers tried to adequate the soils of the Vicosa region in the technical specifications of the D.N.I.T and D.E.R. Low quantity of lime was used (0% to 2%) was the primary element to lime-bitumen stabilization, aging under the plasticity break and promoving changes in the soil grain size distribution, making more granular and putting in the general recommendations disposals to the sand-bitumen mixtures, and bitumen quantity varying the bitumen quantity of the 2% to 8% in relation the dry mass of the soil.
The results proove that the lime-soil stabilization made a great mechanical strenght in soils used in pavements foundations. The bitume made the increase in the soil plasticity but didn`t have substancials decrease in the mechanicals strenghts. Thus, is important more researchers to follow the ideal proportion of lime and bitume for each expansive soil type.
The complete paper was published in the IV SCIENTIST JUNIOR SIMPOSIUM AT VICOSA FEDERAL UNIVERSITY, on July, 1994.
Marcelo Ferreira dos Santos - Doctor Science in Geotecnical Engineering at Viçosa Federal Universitty (Minas Gerais State, Brazil).