期刊
POLYMERS
卷 14, 期 5, 页码 -出版社
MDPI
DOI: 10.3390/polym14051005
关键词
tire-road wear particle; road dust; density separation; characterization; asphalt pavement wear particle
资金
- Technology Innovation Program - Ministry of Trade, Industry and Energy, Korea [20010851]
- Korea Evaluation Institute of Industrial Technology (KEIT) [20010851] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
The article discusses the abrasion of tire treads during driving, producing tire wear particles that combine with other particles on the road to form tire-road wear particles. The study of TRWPs is important for understanding tire wear behaviors and environmental contamination. TRWPs were found to have a rubber composition mainly consisting of NR/SBR or NR/BR/SBR blends.
Tire treads are abraded by friction with the road surface, producing tire tread wear particles (TWPs). TWPs combined with other particles on the road such as road wear particles (RWPs) and mineral particles (MPs), forming tire-road wear particles (TRWPs). Dust on an asphalt pavement road is composed of various components such as TRWPs, asphalt pavement wear particles (APWPs), MPs, plant-related particles (PRPs), and so on. TRWPs have been considered as one of major contaminants produced by driving and their properties are important for study on real abrasion behaviors of tire treads during driving as well as environmental contamination. Densities of the TRWPs are totally dependent on the amount of the other components deposited in the TWPs. In this study, a classification method of TRWPs in the road dust was developed using density separation and the classified TRWPs were characterized using image analysis and pyrolytic technique. Chloroform was used to remove APWPs from mixture of TRWPs and APWPs. TRWPs were found in the density range of 1.20-1.70 g/cm(3). By decreasing the particle size of the road dust, the TRWP content in the road dust increased and its density slightly tended to increase. Aspect ratios of the TRWPs varied and there were many TRWPs with low aspect ratio below 2.0. The aspect ratio range was 1.2-5.2. Rubber compositions of the TRWPs were found to be mainly NR/SBR biblend or NR/BR/SBR triblend.
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