Journal ArticleDOI
Evaluation of fatigue criteria for asphalt binders
David A. Anderson,Yann M. Le Hir,Yann M. Le Hir,Mihai Marasteanu,Jean-Pascal Planche,Didier Martin,Gilles Gauthier +6 more
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 ...read more
Citations
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Journal ArticleDOI
Fatigue and healing performance assessment of asphalt binder from rheological and chemical characteristics
TL;DR: In this article, a linear amplitude sweep (LAS) and LAS-based healing (LASH) protocols were used to estimate the fatigue and healing characteristics of asphalt binder by newly developed linear amplitude sweeping (LASS) and lAS-Based Healing (Lashing) protocols, and investigate the relationship between chemical composition of asphalt and engineering performance.
Journal ArticleDOI
Evaluation of fatigue behavior of high reclaimed asphalt binder mixes modified with rejuvenator and softer bitumen
TL;DR: In this article, the effect of a new rejuvenator as well as softer bitumen on regenerating fatigue characteristics of the RAB-containing binder mixes as compared to the virgin binder was analyzed.
Proceedings ArticleDOI
Fatigue and healing characteristics of bitumens studied using dynamic shear rheometer
Xiaochun Lu,H Soenen,P Redelius +2 more
Abstract: This paper characterizes the fatigue and healing behavior of bitumen using a dynamic shear rheometer (DSR). Different types of bitumen, before and after aging, were investigated in strain- and stress-controlled modes. Procedures of storage recuperation and intermittent loading were used to determine the effect of healing on bitumen fatigue. The results indicated that, at sufficiently high stiffness, bitumen exhibited fatigue, observe by a progressive decrease in complex modulus (G*) with load applications. The fatigue life was dependent on load amplitude, and in a log-log plot, straight lines were obtained. After oxidative aging, the slope of fatigue line may increase. Regarding the effect of rest periods (healing) on fatigue, it was found that bitumens differed widely both in strain-controlled and stress-controlled tests. In the strain-controlled fatigue and storage recuperation tests, recovery of the stiffness was not reflected in an extension of the fatigue life. In the stress-controlled tests using intermittent loading, the minimum ratio of rest time versus loading time for a significant benefit to fatigue life was found to vary from half to 10 between the bitumens studied. For the covering abstract see ITRD E117423.
Journal ArticleDOI
New fatigue test on bituminous binders: Experimental results and modeling
TL;DR: In this paper, a new fatigue test on bituminous binders was developed in ENTPE/DGCB laboratory in collaboration with the Total company, where a prototype of annular shear rheometer is used, as well as an original testing protocol giving access to the evolution of material linear viscoelastic (LVE) properties during fatigue test.
Journal ArticleDOI
Chemical and rheological characteristics of rejuvenated bitumen with typical rejuvenators
TL;DR: In this paper, three typical rejuvenators (soft bitumen, warm mix surfactant, and bio-rejuvenator) were mixed with aged bitumen and various tests including Dynamic Shear Rheometers (DSR), Fourier Transform Infrared (FTIR) spectroscopy and Gel Permeation Chromatography (GPC) were performed.
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.
Journal ArticleDOI
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
Matti Keentok,Shicheng Xue +1 more
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.