Estudio de la variabilidad de color en muestras de asfalto por adición de componentes químicos

Abstract

This research work seeks to change the color of a conventional asphalt by implementing chemical components that generate a physical reaction to the color change. The main material used was asphalt 60-70, which was characterized by means of test: softening point, ductility, penetration, rotational viscosity, density by the Archimedes method and the effect of heat and air on the asphalt in thin and rotating sheets. Next, asphalts were prepared with ferric oxide at dosages of 6 and 8 %, ferric hydroxide of 30 and 80 %, chromic oxides of 15 and 50 %, chromium sulfate of 6 and 8 % and acrylic emulsion of 8 %. Finally, the added asphalts that showed a representative physical reaction to the color change were subjected to softening point, ductility, and penetration tests to determinate the variability of these properties at the moment of the color change by means of the chemical components used. In addition, the analysis and discussion of the results obtained, the conclusions drawn from the development of this project and a series of recommendations to be taken into account in future works were presented.