STUDY OF THE STABILIZATION IN TWO SOILS, TYPICALS OF THE VICOSA REGION, WITH LIME.
How the lime stabilization have excellent goods strenghts results when mixed with laterithics and expansivse soils of the Vicosa`s Region at Minas Gerais State.
This resume shows a little text that of a article that brings the results of a laboratory study driving to analyse the behavior of two soils properties typical of the Vicosa Region, one with silt characteristics and other with the majority of argillaceous in your grain size distribution. To the stabilization were used hydrated lime, in the quantity of 2%, 6% and 10% in relation of dry soil mass. These mixtures will be applied in the soil flexives pavement layers.
The methodology used obeyed these steps: (1) formatting the compactation soil samples in the optimum humidity; (2) cure of the soil sample in the humidity room with 1, 7, 28, 96 and 180 days of cure, accelerate cure in the temperature of 22.8, 30, 50 and 70 0C with rupture of the soil samples with simple compression and radial compression; (3)Determination of the C.B.R. (California Bearing Ratio) parameters of the mixtures with 1, 7, 28, 90 and days of cure.
The results of this research showed that it have substancials increases of the mechanical strength to the both soils, before its have been stabilized with lime. To the simple compression test, were obtained good increases of strength in values around of 1,700% (lime quantity of 10% and curing time of 90 days) to the soil called of “ETA soil”, and 1,300% (lime quantity of 10% and curing time of 180 days) to the soil called of “ESTABULO soil”. To the radial compression tests these increases were very high too, having values of 1,350% to the “ETA soil” and 3,090% to the “ESTABULO soil”. The soils` expansibilities, specially to the “ESTABULO soil” were been very reduced. To the California Bearing Ratio (C.B.R.) test, increases around of 1,560% (lime quantity of 10% and curing time of 90 days) to the “ETA soil” and 3,700% (lime quantity of 1% and curing time of 180 days) to the “ESTABULO soil” were too obtained.
Thus, the adding of lime in the soils studied in this project made a high increase in mechanical strength to the two types worked. But, different behaviors were observed to the various combinations of lime quantity applied in the two soils types studied.
The complete paper was published in the 6th Scientist Junior Symposium at Vicosa Federal University at Vicosa-MG, on november, 1996.
Marcelo Ferreira dos Santos is a Technical Consultant in Constructions Engineering. He's making a Máster of Business Administration Course in Quality Management in the UNIFACS/LAUREATES UNIVERSITIES (Salvador/Brazil).