Inter-laboratory experiments were designed to evaluate the impact of plastic waste blended directly in bitumen and to assess the properties, using conventional and advanced bituminous binder testing. The blends targeted 5% of plastic waste in 95% bitumen, using two types of polyethylene (PE) primary (pellets) and secondary (shreds) waste. The experiments showed that the addition of PE waste to bitumen does not alter the chemistry of the bitumen, the blending is physical. The DSR results indicate a strong dependency on the testing temperature as at low temperatures the composite material bitumen and PE behave both elastically whereas, at higher temperatures, the bitumen becomes viscoelastic. The MSCR tests indicated that the neat binder is more sensitive to permanent deformation compared to the blends with PE. The fatigue performance using the Linear Amplitude Sweep test showed a better performance in terms of stress and fatigue life for the PE blends.
RILEM TC 279 WMR round robin study on waste polyethylene modified bituminous binders: advantages and challenges / Tusar, M.; Kakar, M. R.; Poulikakos, L. D.; Pasquini, E.; Baliello, A.; Pasetto, M.; Porot, L.; Wang, D.; Cannone Falchetto, A.; Dalmazzo, D.; Lo Presti, D.; Giancontieri, G.; Varveri, A.; Veropalumbo, R.; Viscione, N.; Vasconcelos, K.; Carter, A.. - In: ROAD MATERIALS AND PAVEMENT DESIGN. - ISSN 1468-0629. - (2022), pp. 1-29. [10.1080/14680629.2021.2017330]
RILEM TC 279 WMR round robin study on waste polyethylene modified bituminous binders: advantages and challenges
Veropalumbo R.;Viscione N.;
2022
Abstract
Inter-laboratory experiments were designed to evaluate the impact of plastic waste blended directly in bitumen and to assess the properties, using conventional and advanced bituminous binder testing. The blends targeted 5% of plastic waste in 95% bitumen, using two types of polyethylene (PE) primary (pellets) and secondary (shreds) waste. The experiments showed that the addition of PE waste to bitumen does not alter the chemistry of the bitumen, the blending is physical. The DSR results indicate a strong dependency on the testing temperature as at low temperatures the composite material bitumen and PE behave both elastically whereas, at higher temperatures, the bitumen becomes viscoelastic. The MSCR tests indicated that the neat binder is more sensitive to permanent deformation compared to the blends with PE. The fatigue performance using the Linear Amplitude Sweep test showed a better performance in terms of stress and fatigue life for the PE blends.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
