Diseño de adoquines con mezcla asfáltica en frío utilizando agregados reciclados y no reciclados

Abstract

In this study about cold asphalt mixtures we determined the optimal percentage of asphalt emulsion analyzing the by Marshall stability test, also the performance to the compressive strength and finally to determinate the costs of manufacture of cobblestones with recycled and unrecycled aggregates for light and low traffic applications. In order to determine the parameters mentioned in the previous paragraph, it was necessary to test several test tube finding an optimal percentage of 10.5 percent for mixtures with recycled materials and 10.3 percent for non-recycled materials and stability of 5250 pounds - 4984 pounds respectively, for the test, 30 cobblestones were made as experiments, corresponding to two types of mixtures with three thicknesses of 6 cm, 7 cm and 8 cm, in order to choose the thickness that the best resistance has for both recycled and unrecycled materials. The maximum strengths obtained in the experiments were 38.84 Kg / cm2 for recycled materials and 37.66 Kg / cm2 for non-recycled ones. Due to the result of the strengths, the decision was taken to work with the experiment made with recycled materials of 6cm thick. In addition, an analysis of the final cost of the product was analyzed, giving as a result in a cost of USD 0.24 for cobblestones with recycled materials and USD0.39 for nonrecycled ones, which means that, the selected cobblestone is economically much lower than a traditional cobblestone which costs USD 0.35.