Engineering properties, microplastics and emissions assessment of recycled plastic modified asphalt mixtures

Boom, Yeong Jia; Lu, Dai Xuan; Enfrin, Marie; Swaney, Michael; Masood, Hassan; Pramanik, Biplob Kumar; Robert, Dilan; Giustozzi, Filippo

doi:10.1016/j.scitotenv.2023.164869

Cited by 8 publications

(1 citation statement)

References 19 publications

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“…The study’s findings revealed that modifying asphalt mixes with recycled plastics increased their fatigue and rutting resistance. It also helps lower gas emissions during the manufacture of asphalt mixtures [ 21 ]. Ren S et al opted to add Reactive Ethylene Terpolymer (RET) to PE-modified asphalt to improve the elastic characteristics of the modified asphalt in order to improve the overall performance of the modified asphalt, and the optimal RET doping was found to be 1 wt% [ 22 ].…”

Section: Introductionmentioning

confidence: 99%

Performance Study of Waste PE-Modified High-Grade Asphalt

Zhang³

2023

Polymers

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In this work, waste polyethylene (PE)-modified 90# asphalt was made in order to investigate the performance of waste polyethylene-modified high-grade asphalt and the optimal blending quantity. Dynamic Shear Rheology (DSR) and Bending Beam Rheometer (BBR) tests were used to evaluate the high- and low-temperature performance of modified 90# PE-modified asphalt. Infrared spectroscopy and fluorescence microscopy were used to investigate the modification process and distribution status of waste PE in 90# asphalt. The DSR and BBR tests revealed that waste PE enhanced the high-temperature performance of 90# base asphalt and that 5% was the best blending rate. However, the change affects asphalt’s low-temperature performance, and the negative effect on asphalt’s low-temperature performance was minimized at 1% dosing. The incorporation of waste PE absorbed the light components of asphalt, while waste PE can form a reticulated structure in asphalt, which improves its high-temperature performance but degrades its low-temperature performance, according to the results of infrared spectroscopy and fluorescence microscopy.

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Section: Introductionmentioning

confidence: 99%