Correlaciones de parámetros mecánicos mediante la utilización del cono de penetración dinámico (DCP) y la relacion de soporte de California (CBR), suelos de la Provincia de Napo, Ecuador

Abstract

CONDITION FOR PUBLICATION OF PROJECT. In Ecuador, and particularly in Napo Province, road project planning faces significant challenges due to the limited availability of resources for conducting comprehensive geotechnical studies. This constraint often prevents the acquisition of detailed information on soil conditions, which in turn affects the quality and sustainability of infrastructure works. To address this issue, the Dynamic Cone Penetrometer (DCP) test is proposed as a cost-effective alternative for estimating soil bearing capacity, expressed in terms of the California Bearing Ratio (CBR). This study aimed to analyze the relationship between the values obtained through the DCP test and various mechanical properties of the soil. Fourteen representative samples were randomly collected and subjected to laboratory tests standardized under ASTM specifications. The parameters determined included maximum dry density, optimum moisture content, penetration resistance, Atterberg limits, and grain size distribution. Based on the data obtained, CBR prediction models were developed. The first of a potential nature, achieved a coefficient of determination of 𝑅2=0.973. The second model, developed through multiple linear regression and incorporating maximum dry density, optimum moisture content, and DCP results, yielded a multiple correlation coefficient of 0.908. Keywords: Geotechnics, soil mechanics, Dynamic Cone Penetrometer test, DCP, California Bearing Ratio, CBR, geotechnical correlations, bearing capacity, road infrastructure, Ecuador, Napo.