Análisis de las correlaciones entre el Cbr, Dcp, propiedades índice y mecánicas en suelos de la parroquia Belisario Quevedo, cantón Latacunga, provincia de Cotopaxi

Abstract

The California Bearing Ratio (CBR) is the most widely used parameter for sizing flexible pavements worldwide; however, performing this assay is time consuming and has significant costs. To simplify this, a simple and multiple regression analysis was considered through the existing correlations between the index and mechanical properties of twelve representative samples of the study areas; taking into consideration for this, field tests (DCP, Field density) and laboratory tests (Natural Humidity, Granulometry, Atterberg Limits, Specific Gravity, CBR, Modified Proctor). In the analysis of results, the soils studied were classified as sandy with the presence of silt according to the SUCS and the ASSHTO; In the same way, correlations and simple linear regressions were integrated with a polynomial trend of degree two and multiple correlations, with the dispersion of results obtained from the previously mentioned tests. Twenty-two correlations were obtained, of which 54.55 percent of the results presented a coefficient of determination greater than 0.50, 40.90 percent showed values greater than 0.60, and only 4.55 percent showed a value of 0.36. However, the correlation determined through the higher CBR variables from an exponential formula was compared explicitly with the DCP according to ASTM D6951. Subsequently, the design of flexible pavements for the laboratory CBR and the calculated CBR was carried out.