Empirical evaluation of utility of anti-frost layer in pavement structure considering regional climate characteristics

Anti-frost layers in road pavement structures are widely applied to cold areas internationally. They mitigate cracks, potholes and roughness caused by the freeze-thaw phenomenon. Although the anti-frost layer design has been introduced to Korean road networks since the 1990s, its utility has not yet...

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Bibliographic Details
Published in:The international journal of pavement engineering 2022-07, Vol.23 (8), p.2821-2828
Main Author: Han, Daeseok
Format: Article
Language:English
Subjects:
anti-frost layer
Bayesian Markov mixed hazard model
crack
Cracks
Design standards
Empirical analysis
Freezing
freezing index
Frost
life expectancy
Pavement
Pavement management
Pavements
Roads
Statistical methods
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Summary:Anti-frost layers in road pavement structures are widely applied to cold areas internationally. They mitigate cracks, potholes and roughness caused by the freeze-thaw phenomenon. Although the anti-frost layer design has been introduced to Korean road networks since the 1990s, its utility has not yet been empirically proven. This study attempts to evaluate the utility of the anti-frost layer with statistical methods using empirical data. As an analytical tool, the Bayesian Markov mixed hazard model for deterioration modelling and comparative analysis was introduced. In empirical studies, 8-year nation-wide network long-term pavement performance data (2316 sections) collected by the Korean Pavement Management System was applied. The analysis results signify that the anti-frost layer is good for prevention of cracks in network levels but is not enough for some cold areas with a freezing index of over 100. To secure the utility of anti-frost layers in the entire road network, it is necessary to revise the current Korean design standard.
ISSN:1029-8436
1477-268X
DOI:10.1080/10298436.2021.1873327