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espanolUn alto porcentaje de los caminos de la region de Antofagasta no se encuentran pavimentados, y segun la Direccion de Vialidad mas del 40% no estan en buenas condiciones. Los caminos no pavimentados experimentan un deterioro mas acelerado que un camino pavimentado. Esto se debe a que las particulas finas al juntarse con los agregados gruesos, expuestos al medio ambiente pierden humedad, sumado a la accion abrasiva del transito vehicular, generan un disgregamiento superficial del material convirtiendose en polvo y originando fallas tales como baches, ondulaciones y calaminas, lo cual trae como consecuencia perdida de confort, seguridad y durabilidad. El objetivo de esta investigacion es evaluar en terreno el cloruro de calcio CaCl2 como estabilizador de carpetas de rodados en caminos sin pavimentar, analizando el comportamiento de un camino de prueba estabilizado con CaCl2 para conocer como influye su incorporacion en las propiedades mecanicas del suelo. La metodologia empleada es la construccion de un camino de prueba con un tramo estabilizado con CaCl2 y un tramo menor estabilizado con Bischofita. De forma paralela se realizo un estudio experimental en terreno y laboratorio para evaluar la influencia del CaCl2 utilizado para la construccion del camino. Los resultados observados en terreno y en laboratorio permiten concluir que la aplicacion de CaCl2 genera un mejoramiento sustantivo en el comportamiento de las capas de rodadura, debido al efecto cementante que genera sobre la superficie, mejorando las propiedades del camino, ademas de ser un producto economico y de facil aplicacion. EnglishCurrently a large percentage the roads in the Antofagasta Region are not paved, according to the MOP Highway Direction, more than 40% are not in good condition. Unpaved roads experience a more accelerated deterioration than a paved road, since the fine particles when joined with the coarse aggregates exposed to the environment, loss moisture, added to the abrasive action of vehicular traffic, generate a superficial disintegration of the material, becoming dust and causing superficial faults such as; bumps, corrugations and corners, which results in loss of comfort, safety and durability. The objective of this investigation is to evaluate in situ calcium chloride CaCl2 as a stabilizing agent for granular layers on unpaved roads, analysing the behaviour of a test road stabilized with CaCl2, to understand how its incorporation influences the mechanical properties of the soil. The methodology used is the construction of a test path with a section stabilized with CaCl2 and a section stabilized with Bischofita. In parallel, an experimental study was carried out in the field and in the laboratory, to evaluate the influence of CaCl2 used for the construction of the road. The results observed in the field and in the laboratory allow us to conclude that the application of CaCl2 generates a substantial improvement in the behaviour of the rolling layers, due to the cementing effect it generates on the surface, improving road properties, as well as being an economical product easy to apply.

Estudio del comportamiento de una carpeta de rodado estabilizada con cloruro de calcio