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269

Evaluation of fatigue properties of bituminous binders



Title: Evaluation of fatigue properties of bituminous binders
Author(s): J.-P. Planche, D. A. Anderson, G. Gauthier, Y. M. Le Hir, D. Martin
Paper category : journal
Serial title: Materials and Structures
Abreviated Serial title: Mater. Struct.
ISSN: 1359-5997
Publisher: RILEM Publications SARL
Volume: 37
Issue: 269
Issue date: 2004-06-01
Publication year: 2004
Pages: 356 - 359
Total Pages: 4
Nb references: 8
Language: English


Abstract: In France, tensile tests on bituminous binders are usually performed on vertical electromechanical loading frames, the test samples being placed in an insulated temperature control chamber and the deformations determined from the displacement of the cross-head.
The paper presents the results of an inter-laboratory study of which the objective was to evaluate the suitability of this kind of equipment for the performance of direct tension tests at low temperatures.
Most of the test parameters used for this study complied with the procedure proposed by SHRP as from 1995 (AASHTO TP3).
The various operating factors, and more particularly those affecting the determination of true sample elongation (mechanical plays, deformation of the gripping systems, .
.
.
), are discussed and a number of correcting procedures are proposed.
Nevertheless, the results remained scattered.
Considering the "flat" evolution of strain at failure with temperature in the domain of brittle behaviour, this makes it rather difficult to accurately define the temperature for failure at 1% elongation (T(epsilon) = 1%).
This is also the case when this temperature is located in the zone of transition between brittle and ductile behaviour.
The authors suggest that, together with the corresponding tensile strain, this "transition temperature" could be used as an alternative criterion which has the advantage of being linked to a physical behaviour of the material.


Online publication: 2004-04-27
Classification: Scientific Reports
Publication type : full_text
Public price (Euros): 0.00
doi: 10.1617/14127


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