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Effect of Polyethylene Terephthalate (PET) from Plastic Waste on Strength of Hot Mix Asphalt Concrete in Southern Vietnam

Nguyen Manh Tuan


Waste plastic material, e.g. bottles, baskets, and bags, is one of urgent issues which cause environmental pollution these days around the world, especially in Vietnam. Waste plastic including Polyethylene Terephthalate (PET) - a type from plastic bottles in normal life can be used in asphalt mixture for enhancing the properties of mixture in terms of asphalt concrete performance in addition to solving disposal problem. In this study, waste plastic from mineral bottles is cleaned and cut into small dimensions by shredding machine before adding to hot mix asphalt concrete at high temperature. The hot mix asphalt concrete with and without PET are conducted through many experiments such as Marshall stability, indirect tensile strength, Cantabro abrasion loss test for strength evaluation of asphalt concrete. Many contents of PET also are evaluated in the study. Some results of Styrene-Butadiene-Styrene modified asphalt concrete are also included in order to show that PET from waste plastic bottle can be a promising additive or a thermoplastic polymer for hot mix asphalt concrete in aspects of strength performance in this study.

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