Effect of Photocatalyst on Rheological Behavior and NO Degradation Capacity of Asphalt Binder
To reduce vehicle exhaust gas pollution in transport-intensive roadways and tunnels, six types of photocatalytic asphalt binders were designed using graphite-phase carbon nitride (g-C<sub>3</sub>N<sub>4</sub>) and nanoscale titanium dioxide (nano-TiO<sub>2</sub>)...
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MDPI AG
2023-07-01
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| Series: | Catalysts |
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| Online Access: | https://www.mdpi.com/2073-4344/13/7/1083 |
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| author | Yan Wang Xinyu Wang Dongyu Niu Yanhui Niu Huiyun Xia Yue Wang |
| author_facet | Yan Wang Xinyu Wang Dongyu Niu Yanhui Niu Huiyun Xia Yue Wang |
| author_sort | Yan Wang |
| collection | DOAJ |
| description | To reduce vehicle exhaust gas pollution in transport-intensive roadways and tunnels, six types of photocatalytic asphalt binders were designed using graphite-phase carbon nitride (g-C<sub>3</sub>N<sub>4</sub>) and nanoscale titanium dioxide (nano-TiO<sub>2</sub>) particles. In this paper, the rheological behaviors and fatigue life of the nano-TiO<sub>2</sub>-modified asphalt binder (TiO<sub>2</sub>-MA) and g-C<sub>3</sub>N<sub>4</sub>-modified asphalt binder (C<sub>3</sub>N<sub>4</sub>-MA) were investigated. NO degradation capacity of six types of photocatalytic asphalt binders was characterized under visible light conditions. The results showed that TiO<sub>2</sub>-MA had more excellent rheological behaviors and rutting resistance than C<sub>3</sub>N<sub>4</sub>-MA. In addition, 4 wt% nano-TiO<sub>2</sub> markedly improved the rheological behaviors and rutting resistance of MA compared to other dosages. TiO<sub>2</sub>-MA exhibited higher fatigue resistance. The fatigue life of TiO<sub>2</sub>-MA with 4 wt% nano-TiO<sub>2</sub> was increased to 234.1% at 2.5% strain and 242.5% at 5% strain, respectively, compared to base asphalt binder (BA). C<sub>3</sub>N<sub>4</sub>-MA had better NO degradation capacity than TiO<sub>2</sub>-MA. Meanwhile, the NO degradation efficiency of C<sub>3</sub>N<sub>4</sub>-MA reached 17.8% with 5 wt% g-C<sub>3</sub>N<sub>4</sub>. |
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| language | English |
| last_indexed | 2024-03-11T01:12:30Z |
| publishDate | 2023-07-01 |
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| spelling | doaj.art-4af3b5a992244e369e5ea6a0a23d56752023-11-18T18:44:28ZengMDPI AGCatalysts2073-43442023-07-01137108310.3390/catal13071083Effect of Photocatalyst on Rheological Behavior and NO Degradation Capacity of Asphalt BinderYan Wang0Xinyu Wang1Dongyu Niu2Yanhui Niu3Huiyun Xia4Yue Wang5Engineering Research Center of Transportation Materials of the Ministry of Education, Chang’an University, Xi’an 710061, ChinaEngineering Research Center of Transportation Materials of the Ministry of Education, Chang’an University, Xi’an 710061, ChinaEngineering Research Center of Transportation Materials of the Ministry of Education, Chang’an University, Xi’an 710061, ChinaEngineering Research Center of Transportation Materials of the Ministry of Education, Chang’an University, Xi’an 710061, ChinaEngineering Research Center of Transportation Materials of the Ministry of Education, Chang’an University, Xi’an 710061, ChinaEngineering Research Center of Transportation Materials of the Ministry of Education, Chang’an University, Xi’an 710061, ChinaTo reduce vehicle exhaust gas pollution in transport-intensive roadways and tunnels, six types of photocatalytic asphalt binders were designed using graphite-phase carbon nitride (g-C<sub>3</sub>N<sub>4</sub>) and nanoscale titanium dioxide (nano-TiO<sub>2</sub>) particles. In this paper, the rheological behaviors and fatigue life of the nano-TiO<sub>2</sub>-modified asphalt binder (TiO<sub>2</sub>-MA) and g-C<sub>3</sub>N<sub>4</sub>-modified asphalt binder (C<sub>3</sub>N<sub>4</sub>-MA) were investigated. NO degradation capacity of six types of photocatalytic asphalt binders was characterized under visible light conditions. The results showed that TiO<sub>2</sub>-MA had more excellent rheological behaviors and rutting resistance than C<sub>3</sub>N<sub>4</sub>-MA. In addition, 4 wt% nano-TiO<sub>2</sub> markedly improved the rheological behaviors and rutting resistance of MA compared to other dosages. TiO<sub>2</sub>-MA exhibited higher fatigue resistance. The fatigue life of TiO<sub>2</sub>-MA with 4 wt% nano-TiO<sub>2</sub> was increased to 234.1% at 2.5% strain and 242.5% at 5% strain, respectively, compared to base asphalt binder (BA). C<sub>3</sub>N<sub>4</sub>-MA had better NO degradation capacity than TiO<sub>2</sub>-MA. Meanwhile, the NO degradation efficiency of C<sub>3</sub>N<sub>4</sub>-MA reached 17.8% with 5 wt% g-C<sub>3</sub>N<sub>4</sub>.https://www.mdpi.com/2073-4344/13/7/1083g-C<sub>3</sub>N<sub>4</sub>nano-TiO<sub>2</sub>photocatalytic asphalt binderrheological behaviorfatigue lifeNO degradation capacity |
| spellingShingle | Yan Wang Xinyu Wang Dongyu Niu Yanhui Niu Huiyun Xia Yue Wang Effect of Photocatalyst on Rheological Behavior and NO Degradation Capacity of Asphalt Binder Catalysts g-C<sub>3</sub>N<sub>4</sub> nano-TiO<sub>2</sub> photocatalytic asphalt binder rheological behavior fatigue life NO degradation capacity |
| title | Effect of Photocatalyst on Rheological Behavior and NO Degradation Capacity of Asphalt Binder |
| title_full | Effect of Photocatalyst on Rheological Behavior and NO Degradation Capacity of Asphalt Binder |
| title_fullStr | Effect of Photocatalyst on Rheological Behavior and NO Degradation Capacity of Asphalt Binder |
| title_full_unstemmed | Effect of Photocatalyst on Rheological Behavior and NO Degradation Capacity of Asphalt Binder |
| title_short | Effect of Photocatalyst on Rheological Behavior and NO Degradation Capacity of Asphalt Binder |
| title_sort | effect of photocatalyst on rheological behavior and no degradation capacity of asphalt binder |
| topic | g-C<sub>3</sub>N<sub>4</sub> nano-TiO<sub>2</sub> photocatalytic asphalt binder rheological behavior fatigue life NO degradation capacity |
| url | https://www.mdpi.com/2073-4344/13/7/1083 |
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