Análisis de las correlaciones entre propiedades índice y mecánicas con la resistividad eléctrica de suelos granulares en la zona 4 de la ciudad de Ambato

Abstract

This research analyses electrical resistivity as an indirect method to estimate several index and mechanical properties of granular soils, the investigation process included: At first, a macro project was developed, this project includes other four investigations in order to increase the amount of samples; afterwards, a topographic and geologic recognition of the considered zones were done. Inside this zones, forty points were randomly selected, from which ten belongs to the present study, on those points, the field tests were made and the samples were taken. Once the index and mechanical properties results were obtained and the classification of soils were made, various regression analysis, using the least square method, were conducted, from which only the models that presented a logical relationship and higher correlation coefficients were selected. Field and laboratory tests as well as soil sampling were done following the American Association of State Highway and Transportation Officials and the American Society for Testing and Materials standards. Twenty four, simple and multiple, correlations are presented as result, the R² values vary from 66% to 94%, proving that electrical resistivity can be used as an economical and fast way to estimate certain granular soils’ properties.