Bright and slip-proof engineered cementitious composites with visible light activated photo-catalysis property for pavement in tunnels
Pavement in tunnels requires specific properties and functions. In this study, bright and slip-proof Engineered Cementitious Composites (ECCs) with visible light activated photo-catalysis properties are developed for pavement applications in tunnels. A carbon-modified TiO2 is used to engage a visibl...
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| Main Authors: | , , , , , , |
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| 其他作者: | |
| 格式: | Article |
| 語言: | English |
| 出版: |
2022
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| 主題: | |
| 在線閱讀: | https://hdl.handle.net/10356/161162 |
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| 機構: | Nanyang Technological University |
| 語言: | English |
| 總結: | Pavement in tunnels requires specific properties and functions. In this study, bright and slip-proof Engineered Cementitious Composites (ECCs) with visible light activated photo-catalysis properties are developed for pavement applications in tunnels. A carbon-modified TiO2 is used to engage a visible light activated photo-catalysis property while white fine aggregates are included to enhance the skid resistance. With 20% silica sand and 5% TiO2 inclusion, the resulting white ECCs possess excellent mechanical properties (i.e., compressive strength > 50 MPa, tensile strength > 4.5 MPa, and tensile strain capacity > 4%) and high skid resistance around 80 BPN, and has high surface reflectivity with a lightness value of 90. Furthermore, the resulting ECCs show strong visible light activated photo-catalysis property with 90% reflectance recovery after 4 h visible light irradiation and only 8% lightness reduction after the accelerated dirt pick-up resistance test. |
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