A study on dielectric response of bitumen in the low-frequency range Academic Article uri icon

abstract

  • 2015 Taylor & Francis. From the current state of literature, the dielectric property of bitumen has not been understood extensively, nor its relation with other properties such as polarity and rheology. In this study, dielectric spectroscopy measurement in a low-frequency range (102106Hz) was performed on both pure bitumen in different grades and wax-modified bitumen (WMB). From the performed tests we found the following: (i) the dielectric response of base bitumen is strongly temperature and frequency dependent, which is also highly linked to the rheology of the system. (ii) No remarkable differences in the dielectric constant (Formula presented.) among different grades of bitumen from the same crude oil source can be seen. (iii) Regular changes of dielectric loss tangent (tan ) among the different grades of bitumen can be observed, which can be a good indicator for the linkage between the dielectric and rheological responses. In addition, it can also be perceived that the dielectric spectroscopy may have the potential to become a new approach for the multi-scale characterisation of road infrastructure materials.

published proceedings

  • ROAD MATERIALS AND PAVEMENT DESIGN

altmetric score

  • 3

author list (cited authors)

  • Chen, F., Taylor, N., Kringos, N., & Birgisson, B.

citation count

  • 16

complete list of authors

  • Chen, Feng||Taylor, Nathaniel||Kringos, Nicole||Birgisson, Bjorn

publication date

  • April 2015