Análisis de las correlaciones entre el CBR, DCP, propiedades índice y mecánicas en suelos de la provincia de Cotopaxi; del cantón Latacunga; parroquia Mulaló

Abstract

The investigative work is contemplated within a macro project belonging to the parishes of the Cotopaxi province, whose purpose is to establish correlations between the index and mechanical properties based on the CBR and DCP tests, to obtain CBR values of the soil, but in function of these properties, thus speeding up the execution time of the laboratory test and optimizing costs in them. For this, field tests were carried out, which were: open pit (test pits), field density by the Ottawa sand-cone method and DCP; Regarding the laboratory tests carried out, it is detailed: moisture content, granulometry, specific gravity, Atterberg limits, modified supervisor type B and CBR. Once the tests were completed, the results were tabulated and then used in the elaboration of the correlations. In total, 20 correlations were obtained, of which 15 were carried out with simple regression methods (linear, polynomial, logarithmic) and 5 with the method of least squares (for correlations with 3 variables); these correlations have a degree of compensation greater than 50 percent, which is statistically considered acceptable. To complete the project, the flexible pavement design was carried out with the CBR calculated in the laboratory, as well as the CBR obtained by the previously generated correlations, as a result of which similar dimensions were obtained in the structural package of the pavement with the two values of CBR.