location: Current position: Home >> Scientific Research >> Paper Publications

Extension of Modified Havriliak-Negami Model to Characterize Linear Viscoelastic Properties of Asphalt Binders

Hits:

Indexed by:期刊论文

Date of Publication:2016-05-01

Journal:JOURNAL OF MATERIALS IN CIVIL ENGINEERING

Included Journals:SCIE、Scopus

Volume:28

Issue:5

ISSN No.:0899-1561

Key Words:Asphalt binder; Complex modulus; Linear viscoelasticity; Kronig-Kramers relation; Master curve

Abstract:Accurate characterization of mechanical properties of asphalt binders plays an important role in the evaluation and selection of binders, and in the design and analysis of mixtures. In this study the modified Havriliak-Negami model previously proposed for complex modulus of asphalt concrete is extended to account for the steady-state flow behavior of viscoelastic liquid materials. The analytical forms of storage and loss modulus master curves are derived from the complex modulus model through complex algebra. The Kronig-Kramers relations of the model are satisfied so that various LVE functions are equivalent and the causality of the model is fulfilled. In addition, the same time-temperature shift factor applies to various LVE functions. Thus, the model is consistent with the LVE theory. The model is fitted to complex modulus test results of various asphalt binders. The results show that the model can accurately characterize the properties of asphalt binders, regardless of whether they show viscoelastic liquid or viscoelastic solid behavior. The results presented in this study together with those presented previously for mixtures indicate that the model provides a consistent and effective approach of characterizing the LVE properties of both asphalt binders and mixtures.

Pre One:多聚磷酸与SBS复合改性沥青的改性机制

Next One:Dynamic backcalculation of asphalt pavement layer properties using spectral element method