Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Selection of type of warm mix asphalt additive based on the rheological properties of asphalt binders
This paper presents a methodology to characterize the changes in the rheological properties of unaged and aged asphalt binders incorporating various Sasobit® and Rediset® contents at high and intermediate temperatures. The changes in the rheological properties of asphalt binders per 1% Sasobit® and Rediset® contents were measured using new proposed parameters namely the non-dimensional viscosity index (∇ηs), gradients of the Superpave™ rutting factor (∇NSRP) and relative G*sin (δ) (∇RG). The results of ∇ηs showed that although both additives reduce binders' viscosities, the decrease per 1% additive depends on test temperature, aging state, asphalt and additive type. The results of flow test also showed that Rediset® does not change the Newtonian behavior of asphalt binder, while Sasobit® converts the Newtonian flow into non-Newtonian at some specific shear rates, which this effect was defined in terms of threshold of non-Newtonian flow (TNF). Based on the results of the rheological binder tests, three viable scenarios to select Sasobit® or Rediset® based on the sustainability and structural performance were introduced.
Selection of type of warm mix asphalt additive based on the rheological properties of asphalt binders
This paper presents a methodology to characterize the changes in the rheological properties of unaged and aged asphalt binders incorporating various Sasobit® and Rediset® contents at high and intermediate temperatures. The changes in the rheological properties of asphalt binders per 1% Sasobit® and Rediset® contents were measured using new proposed parameters namely the non-dimensional viscosity index (∇ηs), gradients of the Superpave™ rutting factor (∇NSRP) and relative G*sin (δ) (∇RG). The results of ∇ηs showed that although both additives reduce binders' viscosities, the decrease per 1% additive depends on test temperature, aging state, asphalt and additive type. The results of flow test also showed that Rediset® does not change the Newtonian behavior of asphalt binder, while Sasobit® converts the Newtonian flow into non-Newtonian at some specific shear rates, which this effect was defined in terms of threshold of non-Newtonian flow (TNF). Based on the results of the rheological binder tests, three viable scenarios to select Sasobit® or Rediset® based on the sustainability and structural performance were introduced.
Selection of type of warm mix asphalt additive based on the rheological properties of asphalt binders
Jamshidi, Ali (Autor:in) / Golchin, Babak (Autor:in) / Hamzah, Meor Othman (Autor:in) / Turner, Pamela (Autor:in)
Journal of Cleaner Production ; 100 ; 89-106
2015
18 Seiten, 36 Quellen
Aufsatz (Zeitschrift)
Englisch
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