Estabilización de arcillas expansivas de la provincia de Manabí con puzolana extraída de ceniza de cascarilla de arroz

Abstract

The present project focuses on the investigation of the physical and mechanical behavior of the soil to the province of Manabí, classified as high plasticity clay (CH) and with a high expansion potential. Altered and unaltered soil samples were taken to be tested in the Rocafuerte and Tosagua sectors of the province of Manabí. The pertinent tests were carried out on patter samples according to the ASTM (American Society for Testing and Materials) standards, in order to obtain the initial data and check their modification by adding a stabilizing agent. In addition to a mineralogical analysis to check the presence of expansive minerals in the studied soil. The stabilizing agent that was used for the mixtures with different dosages by weight is pozzolana of rice husk ash, obtained by a combustion process at a controlled temperature of less than 700 ° C for one hour and sieved by the sieve No. 200.The dosage process for the mixtures was carried out considering different percentages by weight (10, 20 and 30%) of pozzolana, later the behavior of the soil was analyzed, presenting as a result the control of the expansion and the presentation of a new alternative of stabilization for soils with similar characteristics to those studied in this project.