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Fall 2020
Asphalt pavements are the most common type of pavements in North America. Increasing traffic demand, harsh weather conditions, and the tendency for infrastructure operators to reduce the cost (and, therefore, the frequency) of maintenance are the major reasons for asphalt performance improvement...
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High-Float Emulsion Residue: A New Rheological Model Based on the Existence of a Yield Stress
DownloadFall 2016
“High-float” (HF) emulsions are dispersions of micron-sized bitumen droplets in water, with a special type of anionic surfactant functioning as stabilizer. By allowing the water to evaporate from an HF emulsion, what remains is called a “high-float emulsion residue.” Although indistinguishable in...
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Investigation of Environmental and Dynamic Loading Impacts on Flexible Pavement Responses in Cold Climate Conditions
DownloadFall 2016
Flexible pavement design methods have undergone a paradigm shift with particular attention to mechanistic-based approaches, which are based on the actual pavement’s structural behaviour and reflect the pavement performance. The mechanistic design procedures rely on the pavement’s critical...
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Fall 2020
The rheology of asphalt binders is an important factor in the design and construction of roads. As polymer modification is now often required to meet performance demands, the rheological behaviour of the binders has become increasingly complex. Within the past decade, a new method to evaluate...