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Abstract for presentation (Poster or Podium) with a Paper in the Conference Proceedings

Highway Pavements

Reusing Waste Plastics in Asphalt Binders for Road Construction

Monday, June 17, 2024
10:15 AM - 11:30 AM ET
Room: Galleria
Abstract:

This study investigated the potential of using waste plastic in road construction. Different amounts of waste plastic were used in the asphalt binders, and a mixture of traditional and advanced characterization tests were conducted on the plastic-modified and unmodified asphalt binder and hot mix asphalt (HMA) samples. Generally, the viscosity-temperature susceptibility (VTS) and common rheological properties of asphalt binder and the stability of HMA were improved because of the addition of waste plastic to the asphalt. The HMA made with the waste plastic-modified asphalt binders behaved more like the gap-graded hot mix asphalts, which are usually suitable for use in low-traffic flexible pavements and also in the noise-reducing friction course of rigid pavements.  Although more research is needed to determine the optimum amounts of waste plastic for different types of roads, the findings open up the possibility of introducing waste plastics in pavement construction.

Learning Objectives:

Attendees can expect to learn the following from this session:
  • Upon completion, participant will be able to identify the need of reusing waste plastic.
  • Upon completion, participant will be able to characterize asphalt binder.
  • Upon completion, participant will be able to characterize hot mix asphalt.
  • Upon completion, participant will be able to demonstrate the methodology of reusing waste plastic in pavement construction.