The effect of marshall compaction in a hot asphalt mixtures with addition of PET

This article evaluate the effect of compaction on the physical and mechanical performance of a hot mix asphalt (HMA) with the addition of Polyethylene Terephthalate (PET) residues in the laboratory. To this end, a control HMA-19 type asphalt mixture was designed. Subsequently, five asphalt mixtures were manufactured with the same asphalt content of the control sample, adding the following contents of PET: 0.1%, 0.2%, 0.3%, 0.4% and 0.5%. This addition was made with regard to the total mass of the mixture. In order to evaluate the effect of compaction, each mixture sample was manufactured with 25, 50 and 75 blows. In addition bulk specific gravity and resistance parameters to the action of monotonic load were determined using the Marshall test. As a great conclusion, it is reported that the mixture with 0.4% of PET presented the highest unit weight and consequently an increase in rigidity is evidenced with regard to the evaluated mixtures.