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On the interfacial interaction between bituminous binders and mineral surfaces as present in asphalt mixtures

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Author: Fischer, H.R. · Dillingh, E.C. · Hermse, C.G.M.
Type:article
Date:2013
Source:Applied Surface Science, 265, 495-499
Identifier: 469134
Keywords: Materials · AFM · Asphalt adhesion · Bitumen microstructure · Contact angle · Wetting · High Tech Systems & Materials · Industrial Innovation · Mechatronics, Mechanics & Materials · MIP - Materials for Integrated Products · TS - Technical Sciences

Abstract

The interfacial interaction between bituminous binders and several mineral surfaces of different chemical nature as present in asphalt mixtures has been investigated using atomic force microscopy. Several dry mineral surfaces display comparable wetting with respect to the different phases present in the micro-structure of bitumen, regardless of differences in their chemical nature. The peri/catana-phase shows a preferential wetting due to adsorption of asphaltene aggregates to the mineral surfaces. © 2012 Elsevier B.V. All rights reserved.