Caracterización del grado de dispersión en arcillas de la zona Sur-Este de la cuenca sedimentaria de Loja, para determinar potencial de generación de procesos de piping.

Abstract

The determination of the dispersive clay presence is essential to take prevention measures against geological risks. It is because the foretold clay´s physical-chemicals properties confer it with an unstable behaviour in hydraulic flow presence (Gonzales & Armas, 2008). This researching work documents the quantitative and qualitative bases for the dispersive clay´s identification in the south-east zone, in the sedimentary basis of Loja, it is done through the analysis of piping structures in the field and tests in laboratories, such as double hydrometer (ASTM D 4221-99 and ASTM D 422-63) and Crumb (ASTM 6572-00) in which, considerable dispersion values were obtained. These values represent a future high risk, as the vulnerable zones have not been influences by the man yet, but a more anthropic intervention is expected in the coming years, due to the increasing population.