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Author:

Wang, C. (Wang, C..) | Gong, G. (Gong, G..) | Chen, Y. (Chen, Y..)

Indexed by:

EI Scopus

Abstract:

With recent developments of the perpetual asphalt pavement technology, the climate change impact on the long-term pavement performance has been gradually concerned and addressed due to the viscoelastic (temperature-dependent) feature of asphalt materials. This paper foucuses on the assessment of the climate change effects on the asphalt pavement performance and durability. Firstly, the future air temperature trend from 2020 to 2099 across the country is analyzed based on the climate predictive models. Then,the evolution of the temperature coefficients in asphalt pavement design are investigated under various Representative Concentration Pathways ( RCP) levels ( RCP4. 5 and RCP8. 5) . Finally, a risk assessment of the long-term pavement performance ( permanent deformation and fatigue cracking) is performed for typical pavement structure types in various regions. The analysis results show that the temperature coefficients in asphalt pavement design under climate change is affected by both future carbon emission scenario and regional difference. The growth of the temperature adjustment coefficients vary greatly in different regions with relative low growth rate. The increase in reference equivalent temperature is less affected by the regions but exhibits obvious region-dependent growth rate. Under two different RCP scenarios,both the rutting and fatigue resistance are gradually reduced after taking into account of the climate change impact and the situation under RCP8. 5 scenario is more challenging for pavement durability. Generally, the climate change impact on asphalt pavement performance among various regional cities display a consistent trend with slight discrepancy,in which the high altitude and severely cold area in Qinghai-Tibet plateau shows higher sensitivity to climate change especially for the permanent deformation potential. Therefore, with the developments of the low-carbon sustainable pavement technologies, it is also necessary to simultaneously enhance the life-cycle high performance resilience of asphalt pavements under climate change. © 2023 Editorial Office of China Civil Engineering Journal. All rights reserved.

Keyword:

road engineering long-term performance asphalt pavement design temperature coefficients climate change

Author Community:

  • [ 1 ] [Wang C.]Beijing University of Technology, Beijing, 100124, China
  • [ 2 ] [Gong G.]Beijing University of Technology, Beijing, 100124, China
  • [ 3 ] [Chen Y.]Beijing University of Technology, Beijing, 100124, China

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Source :

China Civil Engineering Journal

ISSN: 1000-131X

Year: 2023

Issue: 2

Volume: 56

Page: 110-120

Cited Count:

WoS CC Cited Count: 0

SCOPUS Cited Count: 1

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 7

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