Estudio de la estabilización de arcillas expansivas de Manabí con ceniza del volcán Tungurahua

Abstract

The proposed project exposes the stabilization of expansive clays with soil samples obtained in different areas of the province of Manabí and the implementation of an additive that has not been studied in the country, such as volcanic ash. This innovative stabilizer is found in the skirts of the Tungurahua volcano due to its recurrent activity, implementing it since its natural pozzolan acts as a cementing agent. The addition of ash proposes to improve soil properties, so physical and mechanical tests were performed such as: moisture content, SUCS, granulometry by washing and hydrometer, density of solids, expansion index, mineralogical analysis, permeability, direct shear and consolidation, from natural soil samples used as a pattern that allowed observing their initial behavior and soil masses dosed at 10, 20 and 30% dry weight of the additive. The results of the soil characterization tests have allowed an analysis of the behavior of the clays before and after the implementation of the pozzolan. There were clear deductions of the behavior of the soil in general, leaving 20% as the optimal percentage of pozzolana for the conditions analyzed.