1. Quantification of different effects occurring during fatigue tests on bituminous mixtures
- Author
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Josselin Dayde, Cédric Sauzéat, Cong Viet Phan, Simon Pouget, Hervé Di Benedetto, Laboratoire de Tribologie et Dynamique des Systèmes (LTDS), École Centrale de Lyon (ECL), Université de Lyon-Université de Lyon-École Nationale des Travaux Publics de l'État (ENTPE)-Ecole Nationale d'Ingénieurs de Saint Etienne-Centre National de la Recherche Scientifique (CNRS), École Nationale des Travaux Publics de l'État (ENTPE), and École Nationale des Travaux Publics de l'État (ENTPE)-Ministère de l'Ecologie, du Développement Durable, des Transports et du Logement
- Subjects
Thixotropy ,Materials science ,0211 other engineering and technologies ,heating ,02 engineering and technology ,thixotropy ,biasing effects ,Superposition principle ,0203 mechanical engineering ,021105 building & construction ,Range (statistics) ,General Materials Science ,Composite material ,business.industry ,Tension (physics) ,Mechanical Engineering ,nonlinearity ,Biasing ,Structural engineering ,fatigue test ,[SPI.MECA]Engineering Sciences [physics]/Mechanics [physics.med-ph] ,Compression (physics) ,Nonlinear system ,020303 mechanical engineering & transports ,Amplitude ,Mechanics of Materials ,business ,bituminous mixtures - Abstract
International audience; Quantification of different effects (nonlinearity, heating, thixotropy, and fatigue) occurring during fatigue tests on bituminous mixtures is presented in this paper. A focus is given on the nonlinearity phenomenon.Continuous fatigue tests and a test with specific protocol (called fatigue tests to estimate biasing effects) were performed in tension/compression mode on cylindrical samples of the same material. The analysis of results reveals that reversible effects (nonlinearity, heating, and thixotropy) are important (more than 90% decrease at 100,000 cycles for a strain amplitude of 100 μm/m at 10 Hz) and cannot be ignored when interpreting classical fatigue tests. The nonlinearity effects respect the time‐temperature superposition principle, and they are more pronounced at “high” temperature (at the same frequency). Direction of nonlinearity curve in the Cole‐Cole axes is shown to be independent of temperature and frequency for the considered range.
- Published
- 2017
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