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.

Bituminous-based nanocomposites with improved high-temperature properties / Santagata, Ezio; Baglieri, Orazio; Tsantilis, Lucia; Chiappinelli, Giuseppe; Dalmazzo, Davide. - In: COMPOSITES. PART B, ENGINEERING. - ISSN 1359-8368. - STAMPA. - 99:(2016), pp. 9-16. [10.1016/j.compositesb.2016.05.020]

Bituminous-based nanocomposites with improved high-temperature properties

SANTAGATA, Ezio;BAGLIERI, ORAZIO;TSANTILIS, LUCIA;CHIAPPINELLI, GIUSEPPE;DALMAZZO, DAVIDE
2016

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.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11583/2642390