This research work focused on high-temperature properties of bituminous binders nano-reinforced by means of organoclays. A commercial organophilic montmorillonite was used as a second component to nano-reinforce a reference neat bitumen, and as a third component in a polymer-modified binder which was derived from the combination of the reference neat bitumen and a polyisoprenebased additive. Several mixing protocols were followed for blend preparation. Rheological behaviour of the binders was investigated by means of oscillatory and creep-recovery tests carried out with a dynamic shear rheometer. Results indicate that final properties of binders nano-reinforced with layered silicates are strongly affected by the mixing protocol adopted for blend preparation as a result of the key role played by the morphological configuration that nano-particles assume within the bituminous matrix.
http://hdl.handle.net/11583/2642390
Titolo: | Bituminous-based nanocomposites with improved high-temperature properties |
Autori: | |
Data di pubblicazione: | 2016 |
Rivista: | |
Abstract: | This research work focused on high-temperature properties of bituminous binders nano-reinforced by means of organoclays. A commercial organophilic montmorillonite was used as a second component to nano-reinforce a reference neat bitumen, and as a third component in a polymer-modified binder which was derived from the combination of the reference neat bitumen and a polyisoprenebased additive. Several mixing protocols were followed for blend preparation. Rheological behaviour of the binders was investigated by means of oscillatory and creep-recovery tests carried out with a dynamic shear rheometer. Results indicate that final properties of binders nano-reinforced with layered silicates are strongly affected by the mixing protocol adopted for blend preparation as a result of the key role played by the morphological configuration that nano-particles assume within the bituminous matrix. |
Digital Object Identifier (DOI): | 10.1016/j.compositesb.2016.05.020 |
Appare nelle tipologie: | 1.1 Articolo in rivista |
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