Abstract
Pyrolytic carbon black (CBp) from scrap tire pyrolysis is a potential modifier for the bitumen industry. Binders containing different contents of CBp were prepared and experimentally investigated to examine the effects of CBp on the electrical and thermal conductivity, conventional physical properties, rheological properties, high-temperature antirutting performance, aging resistance, and storage stability. Laboratory test results indicated that the incorporation of CBp effectively improves the electrothermal properties, rheological properties, high-temperature rutting resistance, and aging resistance. It also increases the viscosity and decreases the storage stability of bitumen. The study confirms that CBp-modified bitumen with proper selection of content can be a multifunctional paving material.
Highlights
With the transport development and the associated increase in numbers of vehicles, an estimated one billion (~17 million tons) end-of-life tires (ELTs) are generated every year worldwide [1]
This study investigated the various properties of bitumen modified with the pyrolytic carbon black (CBp), a by-product from scrap tire pyrolysis
To examine the modification effect of pyrolytic carbon black on bitumen, the electrical resistivity, thermal conductivity, conventional physical properties, rheological properties, high-temperature antirutting performance, aging resistance, and storage stability were investigated by various laboratory tests
Summary
With the transport development and the associated increase in numbers of vehicles, an estimated one billion (~17 million tons) end-of-life tires (ELTs) are generated every year worldwide [1]. This number has been growing steadily and this trend is expected to continue in the future. This study investigated the various properties of bitumen modified with the pyrolytic carbon black (CBp), a by-product from scrap tire pyrolysis. To examine the modification effect of pyrolytic carbon black on bitumen, the electrical resistivity, thermal conductivity, conventional physical properties, rheological properties, high-temperature antirutting performance, aging resistance, and storage stability were investigated by various laboratory tests
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