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Journal ArticleDOI

Rate-Type Model for Bituminous Mixtures and Its Application to Sand Asphalt

TL;DR: In this article, the constitutive modeling of bituminous asphalt mixtures is studied and the results of the predictions of the model are compared with the compressive creep experiments carried out by Wood and Goetz on a typical sand asphalt mixture.
Abstract: A variety of hot mix asphalt mixtures are used in highway and runway pavement construction. Each mixture caters to specific needs. Mixtures differ from one another in the type and percentage of aggregates and asphalt used, and their response can be markedly different, and thus there is a need to develop constitutive models that can differentiate between the different kinds of mixtures. In this paper, we outline a general procedure for the constitutive modeling of bituminous mixtures. We illustrate the efficacy of this approach by means of an application to sand asphalt. The governing equations for this special problem reduce to a stiff nonlinear ordinary differential equation and this is solved numerically using Gear’s method. We compare the results of the predictions of the model that we have developed with the compressive creep experiments carried out by Wood and Goetz on a typical sand asphalt mixture and find them to be in good agreement.
Citations
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Journal ArticleDOI
TL;DR: In this article, the authors developed a model from a thermodynamic standpoint that seems capable of describing the nonlinear response of asphalt binders and tested the efficacy of the model by comparing its predictions against two different sets of torsion experiments.
Abstract: In this paper, we develop a model from a thermodynamic standpoint that seems capable of describing the nonlinear response of asphalt binders. We test the efficacy of the model by comparing its predictions against two different sets of torsion experiments on asphalt binders. The first set of experiments that we use for corroborating the model was carried out by Narayan et al. [2012. Mechanics Research Communications, 43, 66–74] wherein for the first time it was found that the relaxation times associated with the torque and the normal forces, in a torsion experiment, are markedly different, and the second set of experiments that we use to corroborate the model documents the overshoot of torque in a torsion experiment [Krishnan and Narayan, 2007. Steady shear experiments on ashpalt. Chennai: IIT, Madras]. The model that is developed in this paper fits both sets of experiments well, and it seems to be a good candidate for describing the response of asphalt binders in general. As the deformation is nonlinear, ...

24 citations


Cites background or methods from "Rate-Type Model for Bituminous Mixt..."

  • ...…the basic kinematical quantities and governing equations, we use a recently developed thermodynamic framework (see Rajagopal and Srinivasa 2000, Krishnan et al. 2006, Málek and Rajagopal 2007, Karra and Rajagopal 2009) and derive a rate type fluid model from the knowledge of the constitutive…...

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  • ...…interest in the development of a thermodynamically consistent nonlinear viscoelastic fluid model to describe various forms of asphalt and asphalt mixes (see, for example, Krishnan and Rajagopal 2005, Krishnan et al. 2006, Koneru et al. 2008, Ravindran q 2014 Taylor & Francis *Corresponding author....

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DissertationDOI
21 Dec 2011
TL;DR: In der vorliegenden Arbeit wird ein Verbundmodell zur Beschreibung des thermo-mechanischen Verhaltens von Asphaltmischungen entwickelt and validiert as discussed by the authors.
Abstract: In der vorliegenden Arbeit wird ein Verbundmodell zur Beschreibung des thermo-mechanischen Verhaltens von Asphaltmischungen entwickelt und validiert. Das Modell beschreibt das Materialverhalten von Asphalt als Verbundwerkstoff auf Basis der Mischungstheorie. Hierfur ist das Verformungsverhalten der Bindemittelkomponente mit einem fraktionalen rheologischen Modell beschrieben. Die Mineralstoffkomponente wird mit einem Modell der Hypoplastizitat erfasst. Mit Hilfe einer Evolutionsstrategie erfolgt die Identifikation der Modellparameter der Einzelkomponenten auf der Grundlage experimenteller Untersuchungen. Fur die Validierung des Verbundmodells liegt ein umfangreiches experimentelles Programm vor, bei dem zwei ausgewahlte Asphaltmischungen in einaxialen Versuchen untersucht werden. Der Vergleich der Versuche mit Ergebnissen numerischer Simulationen bedingt physikalisch begrundete Modifikationen am Verbundmodell. Das modifizierte Modell ermoglicht die Analyse des Verformungsverhaltens realer Strukturen aus Asphaltmaterialien in numerischen Berechnungen mit der Finite-Element-Methode.

12 citations


Cites background from "Rate-Type Model for Bituminous Mixt..."

  • ...[66] auf die Beschreibung sandhaltiger Asphalte übertragen....

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  • ...: Modeling of combined physical-mechanical moisture induced damage in asphaltic mixes, Delft University of Technology, Dissertation, 2007 [66] KRISHNAN, J....

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References
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Journal ArticleDOI
TL;DR: In this article, the authors consider the modeling of the behavior of inelastic materials from a continuum viewpoint, taking into account changes in the elastic response and material symmetry that occur due to changes in microstructure of the material.

220 citations

Journal ArticleDOI
TL;DR: In this article, the authors consider the possi- bility that as the material is deformed an additional micromechanism might come into play and have a role in determining the Cauchy stress.

208 citations

Journal ArticleDOI
TL;DR: In this paper, a mechanistic approach to constitutive modeling of asphalt concrete under complicated repetitive loading conditions with rest periods is presented, based on an extensive literature review of the literature.
Abstract: This paper presents a mechanistic approach to constitutive modeling of asphalt concrete under complicated repetitive loading conditions with rest periods. From an extensive literature review, two m...

203 citations