Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/76168
Title: Durability of epoxy-bonded TiO2-modified aggregate as a photocatalytic coating layer for asphalt pavement under vehicle tire polishing
Authors: Wang, D
Leng, Z 
Yu, H 
Huben, M
Kollmann, J
Oeser, M
Keywords: Epoxy-bonded aggregate
Photocatalytic asphalt pavement
Titanium dioxide (TiO2)
Wearing resistance
Issue Date: 2017
Publisher: Elsevier
Source: Wear, 2017, v. 382, p. 1-7 How to cite?
Journal: Wear 
Abstract: A new approach to construct photocatalytic air-purifying asphalt pavements coated with TiO2 modified aggregate was developed and its feasibility and performance were evaluated. Two methods, namely the surface coating and pore filling methods, were adopted to produce the TiO2 modified aggregate. Their photocatalytic efficiency and mechanical performance under vehicle tire polishing, applied by an Aachen Polishing Machine (APM), were investigated and compared. Results indicated that it is feasible to build durable photocatalytic pavement using the new approach and material spreading process reported in this study. Both TiO2 modification methods provided the spreading aggregate with excellent and comparable NO degradation rates before polishing; however, the pore filling method provided better long-term NO degradation efficiency. The spreading aggregate modified by either method showed excellent long-term skid resistance and surface texture properties after vehicle tire polishing.
URI: http://hdl.handle.net/10397/76168
ISSN: 0043-1648
EISSN: 1873-2577
DOI: 10.1016/j.wear.2017.04.004
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