Análise dos métodos de moldagem de corpos de prova para ensaios triaxiais em areias carbonáticas

Abstract

Soil reconstitution and remolding is an essential step in ensuring representative laboratory test results. Due to the granular and non-cohesive nature of sands, particular challenges arise, such as ensuring homogeneity, strict density control, and preventing particle segregation. In this context, there is a need for studies of molding methods that are more effective and ensure greater representativeness of the tested samples. In view of this, the present work aims to evaluate the applicability of air pluviation molding methods in the reconstruction of carbonate sand test specimens that are more representative, i.e., that do not vary significantly during sand deposition, thus being the most suitable method for performing triaxial tests in the loose and compacted states. In the molding procedure, the funnel opening, drop height, number of blows, and number of layers were varied. As a result, based on statistical analysis of the data, it was possible to obtain the most effective procedure for carbonate sands in the loose and dense states