Uniqueness of the Viscoelastic Time-Function for Asphalt-Aggregate Mixes

Eyal Levenberg, Jacob Uzan

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

Abstract

In general mechanical terms asphalt-aggregate mixes are both viscoelastic and
viscoplastic at service temperatures and loading conditions. The focus of this paper is on the viscoelastic component-response under small-strains. This research is part of an ongoing effort by the authors to develop a 3-D constitutive model for asphalt mixes. The paper presents laboratory tests consisting of creep and recovery cycles under uniaxial and isotropic stress conditions. Using a special load-transfer device and employing advanced triaxial testing procedures it was possible to obtain fast unloading after each creep period and insure true zero-stress during recovery times. These features enabled a reliable and straightforward isolation of the viscoelastic response from the total deformation. Analysis of the test data shows that one unique creep-compliance function may be used to describe the viscoelastic response of the material under multiaxial stress conditions. This finding will greatly simplify any future development and calibration of a 3-D material-model.
Original languageEnglish
Title of host publicationAdvanced Characterisation of Pavement and Soil Engineering Materials : Proceedings of the International Conference on Advanced Characterisation of Pavement and Soil Engineering
PublisherCRC Press, Taylor & Francis Group
Publication date2007
Pages35-48
ISBN (Print) 9780415448826
Publication statusPublished - 2007
Externally publishedYes
Event International Conference on Advanced Characterisation of Pavement and Soil Engineering - Athens, Greece
Duration: 20 Jun 200722 Jun 2007

Conference

Conference International Conference on Advanced Characterisation of Pavement and Soil Engineering
CountryGreece
CityAthens
Period20/06/200722/06/2007

Fingerprint Dive into the research topics of 'Uniqueness of the Viscoelastic Time-Function for Asphalt-Aggregate Mixes'. Together they form a unique fingerprint.

Cite this