Interpretation of the Superpave IDT strength test using a viscoelastic-damage constitutive model


This paper presents a new interpretation for the Superpave IDT strength test based on a viscoelastic-damage framework. The framework is based on continuum damage mechanics and the thermodynamics of irreversible processes with an anisotropic damage representation. The new approach introduces considerations for the viscoelastic effects and the damage accumulation that accompanies the fracture process in the interpretation of the Superpave IDT strength test for the identification of the Dissipated Creep Strain Energy (DCSE) limit from the test result. The viscoelastic model is implemented in a Finite Element Method (FEM) program for the simulation of the Superpave IDT strength test. The DCSE values obtained using the new approach is compared with the values obtained using the conventional approach to evaluate the validity of the assumptions made in the conventional interpretation of the test results. The result shows that the conventional approach over-estimates the DCSE value with increasing estimation error at higher deformation rates.

Publication DOI:
Divisions: College of Engineering & Physical Sciences
Additional Information: The final publication is available at Springer via Funding: The authors would like to acknowledge the support of the Swedish Transport Administration (Trafikverket) for funding this research.
Uncontrolled Keywords: anisotropic damage,asphalt concrete,Dissipated Creep Strain Energy,Superpave IDT strength test,visco-elastic-damage,DCSE,Materials Science(all),Chemical Engineering(all),Mechanical Engineering,Aerospace Engineering
Publication ISSN: 1573-2738
Last Modified: 17 Jun 2024 07:19
Date Deposited: 05 May 2016 12:59
Full Text Link:
Related URLs: http://www.scop ... tnerID=8YFLogxK (Scopus URL)
https://link.sp ... 1043-016-9297-9 (Publisher URL)
PURE Output Type: Article
Published Date: 2016-08-01
Published Online Date: 2016-03-22
Accepted Date: 2016-03-03
Submitted Date: 2016-02-25
Authors: Onifade, Ibrahim
Balieu, Romain
Birgisson, Bjorn



Version: Accepted Version

| Preview

Export / Share Citation


Additional statistics for this record