Cooling High-Speed Railway Slab Tracks with Solar Reflective Coatings: A Feasibility Study

Cooling High-Speed Railway Slab Tracks with Solar Reflective Coatings: A Feasibility Study

AbstractThe slab track temperature is significant with respect to the safety of the vehicle. The objective of this study was to investigate the cooling effects of solar reflective coatings (SRCs) on slab tracks. Two types of coatings were applied in the outdoor environment, and a model considering r...

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Veröffentlicht in:Journal of materials in civil engineering 2022-05, Vol.34 (5)
Hauptverfasser: Kang, Weixin, Li, Pengxin, Chen, Jian, Hu, Meng, Yang, Rongshan, Liu, Xueyi
Format: Artikel
Sprache:eng
Schlagworte:
Building materials
Civil engineering
Coatings
Cooling
Cooling effects
Cooling rate
Feasibility studies
High speed rail
Railway engineering
Railway tracks
Technical Papers
Wind effects
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Zusammenfassung:AbstractThe slab track temperature is significant with respect to the safety of the vehicle. The objective of this study was to investigate the cooling effects of solar reflective coatings (SRCs) on slab tracks. Two types of coatings were applied in the outdoor environment, and a model considering reflective coatings was subsequently established. The coatings decreased the maximum temperature and maximum temperature gradient by 8°C-12°C and 20°C/m-30°C/m, respectively. The albedo of an SRC on a slab track was suggested to be greater than 0.6. The coatings exhibited superior cooling effects in case the wind scale was lower than Level 2.
ISSN:0899-1561
1943-5533
DOI:10.1061/(ASCE)MT.1943-5533.0004211