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Complex modulus and creep susceptibility of asphalt mixture



Title: Complex modulus and creep susceptibility of asphalt mixture
Author(s): J. M. M. Molenaar, A. A. A. Molenaar
Paper category : conference
Book title: Sixth International RILEM Symposium on Performance Testing and Evaluation of Bituminous Materials
Editor(s): M. N. Partl
Print-ISBN: 2-912143-35-7
e-ISBN: 2912143772
Publisher: RILEM Publications SARL
Publication year: 2003
Pages: 513 - 519
Total Pages: 7
Nb references: 5
Language: English


Abstract: The complex modulus and the viscoelastic as well as the viscoplastic creep susceptibil-ity are analysed to investigate if these properties can be used as true material properties to predict the stress strain behaviour of asphalt mixtures in road pavements. The com-plex modulus and the viscoelastic creep susceptibility were determined in the four point bending test. The creep was measured in the triaxial creep test. The complex modulus and the viscoelastic creep susceptibility can be considered true material properties. The viscoplastic creep susceptibility was found to depend on the specimen size, and can therefore not be considered a true material property. It was found that the viscoplastic creep susceptibility can be greater or smaller than the viscoelastic creep susceptibility, depending on the type of mixture (grain structure), the specimen size, the state of stress, and the shape of the wave-form of the applied stress. The viscoelastic creep susceptibil-ity in the low frequency domain can be used as an estimator of the viscoplastic creep susceptibility, and the resistance to permanent deformation.


Online publication: 2003-03-02
Publication type : full_text
Public price (Euros): 0.00
doi: 10.1617/2912143772.064