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- W11619262 abstract "In Texas, there is a growing interest in asphalt emulsions for spray and surface sealing applications, such as seal coats and surface treatments. The curing rate of asphalt emulsions is related to the rate the emulsion gains shear strength. Numerous early failures with surface treatment applications are attributed to poor adhesion between the asphalt binder present in the emulsion and the aggregates. Asphalt emulsions are designed to lose water with time and thus develop enough adhesion to inhibit aggregate loss due to shear forces applied by traffic. The rates at which asphalt emulsions cure are often determined by climatic factors, as well as certain inherent material properties. This paper analyzes the curing rates for a wide range of asphalt emulsions with the intent of proposing a statistical model that could predict their curing rate as a function of selected weather parameters and material properties. The results indicate that the curing rate is indeed influenced by the vapor pressure deficit and the wind speed of the ambient air. It was found that three of the material properties, the setting characteristics of the emulsified binder, the nature of surface charges on the binder particles in the emulsion, and the presence of a harder asphalt base actively influence the curing rate of the emulsion. The presence of a cationic surfactant or a harder asphalt base translates into an accelerated curing rate. On the other hand, medium setting emulsions were found to cure slower than rapid or slow setting emulsions. Increased vapor pressure deficit and higher turbulence due to higher wind speeds were also found to expedite the curing process of asphalt emulsions." @default.
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- W11619262 date "2010-01-01" @default.
- W11619262 modified "2023-10-17" @default.
- W11619262 title "Curing Rates for Asphalt Emulsions" @default.
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