Low frequency dielectric spectroscopy of bitumen binders as an indicator of adhesion potential to quartz aggregates using Portland cement

Lyne, Åsa Laurell, Taylor, Nathaniel, Jaeverberg, Nadja, Edin, Hans and Birgisson, Björn (2016). Low frequency dielectric spectroscopy of bitumen binders as an indicator of adhesion potential to quartz aggregates using Portland cement. Materials and Structures, 49 (4), pp. 1327-1336.

Abstract

The purpose of this investigation was to interpret the bitumen-aggregate adhesion based on the dielectric spectroscopic response of individual material components utilizing their dielectric constants, refractive indices and average tangent of the dielectric loss angle (average loss tangent). Dielectric spectroscopy of bitumen binders at room temperature was performed in the frequency range of 0.01–1000 Hz. Dielectric spectroscopy is an experimental method for characterizing the dielectric permittivity of a material as a function of frequency. Adhesion data has been determined using the Rolling bottle method. The results show that the magnitude of the average tangent of the dielectric loss angle (average loss tangent) depends on bitumen type. The average loss tangent in the frequency range 0.01–1 Hz is introduced as a potential indicator for predicting polarizability and, thereby, adhesion potential of bitumen binders to quartz aggregates when using Portland cement. In order to obtain acceptable adhesion of 70/100 penetration grade bitumen binders and quartz aggregates when using Portland cement, it is suggested that the binder have an average tan δ > 0.035 in the frequency range 0.01–1 Hz.

Publication DOI: https://doi.org/10.1617/s11527-015-0579-5
Divisions: Engineering & Applied Sciences
Additional Information: The final publication is available at Springer via http://dx.doi.org/10.1617/s11527-015-0579-5
Uncontrolled Keywords: average loss tangent,bitumen,dielectric constant,permittivity,polarizability,Portland cement,quartz,Building and Construction,Civil and Structural Engineering,Mechanics of Materials,Materials Science(all)
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Related URLs: http://www.scop ... tnerID=8YFLogxK (Scopus URL)
Published Date: 2016-04
Authors: Lyne, Åsa Laurell
Taylor, Nathaniel
Jaeverberg, Nadja
Edin, Hans
Birgisson, Björn

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