Análise da eficiência de estabilizante químico em solos utilizando a metodologia MCT

Abstract

Soil stabilization aims to improve its characteristics so that it meets the specifications for which you want to use it. There are several ways to perform the stabilization, through mechanical stabilization or chemically with the use of a chemical compound, in this particular case, Dynabase. This additive, according to the manufacturer, is a chemical stabilizer composed of calcium hydroxide that aims to improve the support capacity and waterproofing, thus avoiding the throw-away and reducing the costs of the work. With the objective of analyzing the efficiency of the mentioned chemical stabilizer in the tropical soils of the state of Sergipe, the MCT methodology (Miniature, Compacted, Tropical) was used. To carry out the tests, the levels of 3% and 5% of the commercial product were used in two soil samples extracted from the same deposit in the municipality of Siriri/SE. When carrying out the physical characterization tests (joint granulometric analysis and Atterberg limits) he noticed an increase in the fine fraction retained in the 0.075mm sieve and a reduction in the plasticity index compared to pure soil. For the mechanical characterization tests (mini compaction, mini-CBR and expansion) a reduction in the values of maximum apparent dry specific mass and constancy in the values of optimal humidity, an increase in the values of mini-CBR and a reduction in the values of expansion.