Performance improvements of asphalt mixtures by dry addition of polymeric additives

Laboratory and in-situ tests for estimating improvements in asphalt concrete with the addition of an LDPE and EVA polymeric compound

“…It was not designed for modification of bitumen, but rather to improve the mechanical performance and durability of asphalt mixtures. Tentatively, a dosage of 4-8% on weight of bitumen is reasonable for this kind of polymers [33]. The physical properties listed in the technical sheet provided by the manufacturer are:…”

“…For practical needs, it is much more advantageous to add the polymer in the asphalt mixture: the additive is added to the hot aggregates before mixing with the bitumen. In view of this, the optimal process to make a mixture is the succession of the following components: aggregates, additives, bitumen and filler [33,37].…”