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Journal ArticleDOI

Evaluation of fatigue criteria for asphalt binders

TLDR
In this paper, a time sweep using the dynamic shear rheometer (DSR) has been proposed as an alternative test method for developing load-associated fatigue information for asphalt binders.
Abstract
The original SuperPave asphalt binder specification criterion for fatigue, G* sin δ, has received considerable criticism. Recently, a time sweep using the dynamic shear rheometer (DSR) has been proposed as an alternative test method for developing load-associated fatigue information for asphalt binders. This proposed test method is examined with respect to a phenomenon called edge fracture. Edge fracture is reported in the literature for steady state and oscillatory flow in DSR, but it has not been reported for asphalt binders. The modulus, when plotted versus number of cycles generated in a time sweep test, has the appearance typical of fatigue behavior; however, the actual response of the material depends markedly on the initial modulus of the material. The development of the modulus with repeated shearing is described with respect to flow of the asphalt binder at its circumference. The data are examined with respect to their validity as a measure of fatigue, and recommendations with respect to the use ...

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Citations
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New simplified approach for obtaining a reliable plateau value in fatigue analysis of bituminous materials

TL;DR: In this article, a new simplified approach is proposed to compute the unique energy parameter PV and the results show that applying the proposed method allows a unique fatigue power law to be produced and eliminates the ambiguity and variability in calculating PV.
Journal ArticleDOI

Investigating cohesive healing of asphalt binders by means of a dissipated energy approach

TL;DR: In this article, the dissipated energy ratio approach was used to evaluate the cohesive healing properties of different types of asphalt binder by means of a specific designed testing methodology, which involves comparing the response of binders subjected to continuous oscillatory shear loading carried out without rest periods and with single rest periods introduced at predefined levels of damage.

Inventory of Properties of Minnesota Certified Asphalt Binders

TL;DR: In this paper, an inventory of the rheological properties of certified asphalt binders used in Minnesota was created, where the binders were aged according to standard aging procedures and subject to a number of tests.
Journal ArticleDOI

Fatigue characteristics of modified asphalt binders using fracture mechanics

TL;DR: In this paper, a finite element analysis using the FRANC2D software was carried out to establish the relationship between the crack length propagation and the stress intensity factor of the specimen tested in the Dynamic Shear Rheometer.
Journal ArticleDOI

Effects of filler particle size and ageing on the fatigue behaviour of bituminous mastics

TL;DR: In this article, the effects of filler particle size and aging on the fatigue behavior of bituminous mastics were evaluated, and the results revealed that ageing had a greater effect than filler particles size on the rheological behavior of SBS-modified bituminized mastics, especially for mastics containing coarse filler particles.
References
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Journal ArticleDOI

Instabilities in viscoelastic flows

TL;DR: In this article, the authors present a review of the latest developments as well as earlier work in this area, organized into the following categories: Taylor-Couette flows, instabilities in cone and plate-and-plate flows, parallel shear flows, extrudate distortions and fracture, Instabilities in shear flow with interfaces, extensional flows, and thermohydrodynamic instabilities.
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Energy-Derived, Damage-Based Failure Criterion for Fatigue Testing:

TL;DR: In this paper, a method is presented for examining dissipated energy to select a consistent level of material behavior that is indicative of the damage accumulation in the mixture, showing the similarity between the constant stress and constant strain modes of testing and providing the potential for unifying the now phenomenological description of fatigue.
Journal ArticleDOI

Edge fracture in cone-plate and parallel plate flows

TL;DR: In this article, a study of the theoretical, experimental and computational aspects of edge fracture in second-order liquids is undertaken, which is approximately extended to cover the Criminale-Ericksen-Filbey (CEF) model.
Journal ArticleDOI

Anomalies in the normal force measurement when using a force rebalance transducer

TL;DR: In this paper, it was determined that the active nature of the transducer, which leads to excellent zero stability, causes thermal heating and consequent expansion of the system, and that the transducers length changes are the cause of the normal force anomalies.
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