Correlación entre el coeficiente de permeabilidad y el número de golpes del ensayo DCP en suelos limosos de las provincias de Pichincha, Santo Domingo y Pastaza

Abstract

In this document, a relationship between the coefficient of permeability and the number of blows of the DCP test for silty soils of the provinces of Pichincha, Santo Domingo and Pastaza is proposed. To calculate the permeability coefficient for silty soils, the expressions proposed by: Henry Darcy were used, which involve the flow rate, the hydraulic gradient and the difference in heights, the temperature of the fluid in this case water was at room temperature. In order to evaluate the relationship between the number of blows of the DCP test, which indirectly allows estimating the soil capacity, and the permeability coefficient, the transfer of the DCP equipment, owned by UPS, was requested to the three provinces mentioned above, in order to carry out the corresponding tests. To obtain the permeability coefficient, five tests were carried out with the material from each province, using an empirically manufactured permeameter, using the same mass of soil, but varying the volume, with the purpose of increasing the specific weight, reducing the void ratio and, consequently, varying the permeability. In addition, laboratory tests were carried out to determine the fundamental relationships and classification of soils from the three provinces. From the results of the indicated tests, the permeability values are obtained in natural conditions through the correlations between the results of the variation of the experimental permeability versus the variation of the dry specific weight, and the variation of the experimental permeability versus the variation of porosity, obtained through the equipment manufactured by the authors of the titration project. As a result, it is determined that the permeability under natural conditions adjusts to the experimental values with a polynomial function of degree 4.