Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Wetting kinetics of a bitumen droplet on a glass substrate
In order to understand how interfacial forces may act in cold mix asphalt just after emulsion breaking, a new experimental procedure has been developed. It tends to mimic what happens when, just after the emulsion breaking, a bitumen droplet is in contact with an aggregate particle. The spreading is monitored by measuring the contact angle of the bitumen droplet on a glass slide over time. As expected, wetting kinetics strongly depends on temperature but equilibrium wetting state (final contact angle) appears to be temperature independent. The main output is the huge effect of the temperature. Indeed, total time for wetting at 35°C is close to 8 h while wetting time at 10°C approaches eight years. The relationship between viscosity at 0 Hz and wetting half-life time was found to be linear. This relationship is intrinsic to the system bitumen/glass/air studied here and derived from the interfacial properties of the three mediums.
Wetting kinetics of a bitumen droplet on a glass substrate
In order to understand how interfacial forces may act in cold mix asphalt just after emulsion breaking, a new experimental procedure has been developed. It tends to mimic what happens when, just after the emulsion breaking, a bitumen droplet is in contact with an aggregate particle. The spreading is monitored by measuring the contact angle of the bitumen droplet on a glass slide over time. As expected, wetting kinetics strongly depends on temperature but equilibrium wetting state (final contact angle) appears to be temperature independent. The main output is the huge effect of the temperature. Indeed, total time for wetting at 35°C is close to 8 h while wetting time at 10°C approaches eight years. The relationship between viscosity at 0 Hz and wetting half-life time was found to be linear. This relationship is intrinsic to the system bitumen/glass/air studied here and derived from the interfacial properties of the three mediums.
Wetting kinetics of a bitumen droplet on a glass substrate
Thiriet, Amelie (Autor:in) / Tigier, Léa (Autor:in) / Gaudefroy, Vincent (Autor:in) / Terrier, Jean-Philippe (Autor:in) / Cantot, Justine (Autor:in) / Piau, Jean-Michel (Autor:in) / Chailleux, Emmanuel (Autor:in)
Road Materials and Pavement Design ; 24 ; 424-436
25.04.2023
13 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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Pore-scale visualization of the mobilization of a partially wetting droplet
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Pore-scale visualization of the mobilization of a partially wetting droplet
| British Library Online Contents | 2016
Pore-scale visualization of the mobilization of a partially wetting droplet
| British Library Online Contents | 2016