Vol.10, No.5, 2022, pp.1321-1335, doi:10.32604/jrm.2022.017545
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ARTICLE
Study on Air-Purifying Performance of Semi-Flexible Asphalt Samples Coated with Titanium Dioxide Using Different Methods
  • Shoujing Yan1, Yangyang Wang2,*, Fengxia Chi1, Xue Luo2, Tianjie Zhang3, Chenchen Xi1
1 Institute of Road Engineering, Zhejiang Scientific Research Institute of Transport, Hangzhou, 310023, China
2 Department of Architecture and Civil Engineering, Zhejiang University, Hangzhou, 310027, China
3 Department of Computer Science, Boise State University, Boise, 83725-1145, USA
* Corresponding Author: Yangyang Wang. Email:
(This article belongs to this Special Issue: Green Coating and Film for Degeneration Protection)
Received 19 May 2021; Accepted 12 July 2021; Issue published 22 December 2021
Abstract
Titanium dioxide (TiO2) was recently employed to apply onto road surfaces to degrade the harmful compounds from vehicle emissions. However, it remains a challenging task to find a highly compatible pavement type for TiO2 application to achieve durable and efficient air-purifying performance. This study proposed to coat TiO2 particles onto semi-flexible pavement surface and tried to investigate an optimum coating method. Three coating methods, including direct mixing TiO2 (MT) with asphalt mixture, spraying dry TiO2 (ST) coating and water-solution-based TiO2 (WT) coating on semi-flexible pavement surface. To achieve this objective, semi-flexible samples were prepared to evaluate and compare the performances of three coating methods by employing resistance to wearing, NO removal efficiency tests and residual texture depth tests. It was found that the ST method not only provided better NO degrading efficiency but also improved the resistance to wearing than the other two methods.
Graphical Abstract
Study on Air-Purifying Performance of Semi-Flexible Asphalt Samples Coated with Titanium Dioxide Using Different Methods
Keywords
Titanium dioxide; air-purifying performance; semi-flexible pavement; coating methods
Cite This Article
Yan, S., Wang, Y., Chi, F., Luo, X., Zhang, T. et al. (2022). Study on Air-Purifying Performance of Semi-Flexible Asphalt Samples Coated with Titanium Dioxide Using Different Methods. Journal of Renewable Materials, 10(5), 1321–1335.
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