Investigation of the Formation Mechanism and Environmental Risk of Tire—Pavement Wearing Waste (TPWW)

Kechen Wang, Xiangyu Chu, Jiao Lin, Qilin Yang, Zepeng Fan, Dawei Wang and Markus Oeser
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Kechen Wang: School of Information Engineering, Harbin University, Harbin 150086, China
Xiangyu Chu: School of Transportation Science and Engineering, Harbin Institute of Technology, Harbin 150090, China
Jiao Lin: School of Transportation Science and Engineering, Harbin Institute of Technology, Harbin 150090, China
Qilin Yang: School of Transportation Science and Engineering, Harbin Institute of Technology, Harbin 150090, China
Zepeng Fan: Institute of Highway Engineering, RWTH Aachen University, 52074 Aachen, Germany
Dawei Wang: School of Transportation Science and Engineering, Harbin Institute of Technology, Harbin 150090, China
Markus Oeser: Institute of Highway Engineering, RWTH Aachen University, 52074 Aachen, Germany

Sustainability, 2021, vol. 13, issue 15, 1-14

Abstract: Tire—pavement interaction behaviours result in large amounts of wearing waste matter, which attaches to the surface of the pavement and is directly exposed to the surrounding environment. This kind of matter imposes a great challenge to the environment of the road area. The current study is devoted to carrying out a comprehensive investigation of the formation mechanism of tire—pavement wearing waste (TPWW), as well as the resulting environmental risks. A self-developed piece of accelerated polishing equipment, the Harbin advanced polishing machine (HAPM), was employed to simulate the wearing process between vehicle tires and pavement surfaces, and the TPWW was collected to conduct morphological, physical, and chemical characterisations. The results from this study show that the production rate of TPWW decreases with the increase in polishing duration, and the coarse particles (diameters greater than 0.425 mm) account for most of the TPWW obtained. The fine fraction (diameter smaller than 0.425 mm) of the TPWW comprises variously sized and irregularly shaped rubber particles from the tire, as well as uniformly sized and angular fine aggregates. The environmental analysis results show that volatile alkanes (C9–C16) are the major organic contaminants in TPWW. The Open-Graded Friction Course (OGFC) asphalt mixture containing crumb rubber as a modifier showed the highest risk of heavy metal pollution, and special concern must be given to tire materials for the purpose of improving the environmental conditions of road areas. The use of polyurethane as a binder material in the production of pavement mixtures has an environmental benefit in terms of pollution from both organic contaminants and heavy metals.

Keywords: asphalt pavement; wearing waste; environmental risk; heavy metal; organic contaminant (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2021
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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