Mario Eko CUMENTAS
A Study of Reusing Crosslinked Polyethylene as Pavement Material
Teruhiko MARUYAMA
In this paper, the author will study the action of reusing crosslinked polyethylene as pavement materials in order to increase the recycled percentage. In order to produce crosslinked polyethylene mixture, the materials are shattered to make crumbs about the size of 5mm chips. These chips are then blended with aggregates i.e. sand, crushed gravel, and stone using conventional methods to produce the asphalt mixture.
In this research, crosslinked polyethylene asphalt mixture was evaluated with Marshall stability test, immersion Marshall stability test, splitting test, and wheel tracking test (WT). The test results show that the increasing of the chips aggregate follows the increasing of the Marshall stability and strain strength. However, the immersion stability test shows a decrease in tendency, especially after 20% of the chips have aggregated. Furthermore, the immersion stability exceeds below the standard value. WT shows that the optimum of the chips aggregate for the mixture is 5%. Asphalt mixture containing 5% crosslinked polyethylene mixture has twice better dynamic stability than unmodified asphalt concrete mixture does. Therefore, adding 5% crosslinked polyethylene could improve rutting resistance.
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