A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Effect of Climate Changes Expected during Winter on Pavement Performance
In the coming decades, climate change will have significant impacts on the long-term performance of the road network of Quebec, particularly during winter periods. This study quantifies the effect of climate change expected in winter, specifically focusing on the effect of a decrease in the freezing index and an increase in the number of winter thaw episodes. First, milder winter temperatures will have a positive impact by reducing pavement damage caused by frost heaves. Increased duration of life of about 6–17% is expected for the middle of the century due to milder winters. Also, an expected increase in the number of winter thaw events is likely to have a negative impact on pavements, increasing damages by permanent deformation in the granular base and by fatigue in the asphalt concrete layer. Triaxial tests were conducted to evaluate the performance on permanent deformation of different grain-size distribution of base materials subjected to repeated winter thaw. The triaxial tests concluded that by mid-century, flexible pavements in Québec will experience a 7 to 13% reduction in service life regarding permanent deformation during winter partial thaws.
Effect of Climate Changes Expected during Winter on Pavement Performance
In the coming decades, climate change will have significant impacts on the long-term performance of the road network of Quebec, particularly during winter periods. This study quantifies the effect of climate change expected in winter, specifically focusing on the effect of a decrease in the freezing index and an increase in the number of winter thaw episodes. First, milder winter temperatures will have a positive impact by reducing pavement damage caused by frost heaves. Increased duration of life of about 6–17% is expected for the middle of the century due to milder winters. Also, an expected increase in the number of winter thaw events is likely to have a negative impact on pavements, increasing damages by permanent deformation in the granular base and by fatigue in the asphalt concrete layer. Triaxial tests were conducted to evaluate the performance on permanent deformation of different grain-size distribution of base materials subjected to repeated winter thaw. The triaxial tests concluded that by mid-century, flexible pavements in Québec will experience a 7 to 13% reduction in service life regarding permanent deformation during winter partial thaws.
Effect of Climate Changes Expected during Winter on Pavement Performance
Bilodeau, Jean-Pascal (author) / Drolet, François Perron (author) / Doré, Guy (author) / Sottile, Marie-France (author)
16th International Conference on Cold Regions Engineering ; 2015 ; Salt Lake City, Utah
Cold Regions Engineering 2015 ; 617-628
2015-07-17
Conference paper
Electronic Resource
English
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