Estabilización de Arcillas Expansivas en el Sector de la Autopista Azogues El Descanso Mediante Procesos Químicos

Abstract

Abstract:Expansive soils cause millions of economic losses worldwide, due to the structural damage caused to buildings through their volumetric changes in the presence and absence of water.For this reason, it has been decided to propose a chemical stabilization method to control these types of problems that occur in the soils of the Azogues -El Descanso Highway.The stabilizing agent chosen for this research was lime, which is added to the soil by substitution according to its dry weight in different percentages (1%, 2%, 3%, 6% and 9%), to guarantee the improvement of its physical and geomechanical parameters.By combining 3% lime with the soil (process recommended by McDowell), the plasticity index decreases by 11%, the shrinkage limit increases by 3% and its volumetric changes decrease. Finally, the shear strength of the soil increases from 0.155 kg/cm2 to 2.02 kg/cm2 for the simple compression test and 0.2 kg/cm2 to 0.6 kg/cm2 for the direct shear test.