01594358

Component

The use of ground polyethylene terephthalate (PET) particles in asphalt may provide an environmentally friendly solution for the disposal of large quantities of PET waste. This study evaluated the performance of PET modified hot mix asphalt (HMA) in both dry and wet process, and unmodified HMA as control. Both wet and dry process mixtures contained 10% PET by weight of the base asphalt. The mixture performance tests included rutting test by Asphalt Pavement Analyzer (APA) and retrofitted APA Hamburg test, moisture susceptibility by Indirect Tensile Strength (ITS), and dynamic modulus, E*, by Asphalt Mixture Performance Tester (AMPT). The main results showed: 1) The wet process mixture exhibited better rutting resistance and a higher tensile strength ratio (TSR) than the control; 2) The dry process mixture exhibited better resistance to permanent moisture damage in APA Hamburg testing and also exhibited a higher TSR than the control; 3) The modified mixtures exhibited lower E* and higher phase angles than the control.

This paper was sponsored by TRB committee AFK30 Standing Committee on Characteristics of Nonasphalt Components of Asphalt Paving Mixtures. Alternate title: Selected Properties of Hot Mix Asphalt Modified with Recycled Polyethylene Terephthalate (PET).

01584066

16-3054

English

16p

2016

Transportation Research Board 95th Annual Meeting

Digital/other

Figures; Photos; References; Tables

Dynamic modulus of elasticity; Hot mix asphalt; Rutting

Dry process (Recycling); Indirect tensile strength; Moisture susceptibility; Polyethylene terephthalate; Tensile strength ratio; Wet process (Recycling)

Highways; Materials; Pavements

Transportation Research Board Annual Meeting 2016 Paper #16-3054

TRIS, TRB, ATRI

Jan 12 2016 5:22PM