Análise estatística da distribuição do índice de vazios na curva característica

Abstract

The determination of the characteristic curve is essential for understanding the behavior of unsaturated soil, as it represents the capacity of the soil to store water when subjected to different suction values. The initial void index can determine the shape of the characteristic curves of the studied soils. As a rule, the tests for obtaining the soil-water characteristic curve.are performed taking into account the constant void index. However, the literature presents studies that demonstrate the influence of the void index on the soil-water characteristic curve. (QUEIROZ, 2010). Within Civil / Geotechnical Engineering, statistics has been an important instrument for data analysis, in this perspective, this work presents a statistical study of the distribution of the voids index in the soil-water characteristic curve, focusing on the variability and influence of this parameter on the curve. The results obtained indicated that the void indexes fit a Normal Frequency distribution and that the construction of the characteristic curve also depends on the variability of the void index.