Permanent deformation and complex modulus: two different characteristics from a unique test

Title: Permanent deformation and complex modulus: two different characteristics from a unique test
Author(s): M. Neifar, H. Di Benedetto, B. Dongmo
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: 316 - 323
Total Pages: 8
Nb references: 7
Language: English

Abstract: A new test was developed at the "Département Génie Civil et Bâtiment" (DGCB) of the "Ecole Nationale des Travaux Publics de l'Etat" (ENTPE) to study permanent deformation of bituminous mixes. The experimental program was realised in co-operation with the "Laboratoire Centrale des Ponts et Chaussées" (LCPC) of Nantes. This test which is homogeneous provides direct information for the determination of the rheological law of the bituminous mixes. A specific equipment was developed in order to carry out the measurements of the accumulated permanent deformation (which can reach some 10-2 m/m) and the cyclic deformation for each "small" cycle (some 10-5 m/m). Cyclic deformation data allow to calculate the complex modulus for the considered frequency, temperature and stress amplitude. Experimental tests were carried out in order to contribute with the comprehension of the phenomena and the formulation of a thermo-visco-plastic law adapted for the rutting phenomenon modelling.

Online publication: 2003-03-02
Publication type : full_text
Public price (Euros): 0.00
doi: 10.1617/2912143772.039