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

Åsa Laurell Lyne*, Nathaniel Taylor, Nadja Jaeverberg, Hans Edin, Björn Birgisson

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

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.

Original languageEnglish
Pages (from-to)1327-1336
JournalMaterials and Structures
Volume49
Issue number4
Early online date12 Mar 2015
DOIs
Publication statusPublished - Apr 2016

Bibliographical note

The final publication is available at Springer via http://dx.doi.org/10.1617/s11527-015-0579-5

Keywords

  • average loss tangent
  • bitumen
  • dielectric constant
  • permittivity
  • polarizability
  • Portland cement
  • quartz

Fingerprint Dive into the research topics of 'Low frequency dielectric spectroscopy of bitumen binders as an indicator of adhesion potential to quartz aggregates using Portland cement'. Together they form a unique fingerprint.

Cite this