Analisis del comportamiento del material de prestamo de cantera tratado con cemento portland para su utilizacion como sub-base en la estructura de pavimentos

Abstract

The present titration work is based on the analysis of loan material extracted from two quarries located in the city of Portoviejo to, after a comparison between them, choose the most favorable material through the results of laboratory tests and perform stabilization with cement. Portland for use as a sub-base in the pavement structure. The loan material, also called ballast, was extracted from the “Hermanos Carrillo” and “MegaRok” quarries, located in the Picoazá parish of the Portoviejo Canton. To obtain the characterization of the material, both in its natural state and stabilized with Portland cement, the following laboratory tests were carried out: Natural humidity, Atterberg limits, granulometric analysis, determination of maximum density and optimal humidity, relative support value (C.B.R.), Compressive strength and durability testing by wetting and drying of soil-cement mixtures. It can be understood that soils stabilized with Portland cement are rigorously dosed by standards based on the classification of the soil being treated. The test results of our material provide data for a type A-2 soil, with its percentage of cement being between 5% - 9% of the weight of the material according to the Portland Cement Association, in this way its resistance characteristic improves. deformability and durability. With the results obtained in the design of this stabilization, a viable and reliable alternative was reached with advantages in the technical and environmental field, while its economic cost is high.