Analysis of reclaimed asphalt blended binders using linear and nonlinear viscoelasticity frameworks

Vajipeyajula, Bhaskar; Roja, K. Lakshmi; Masad, Eyad; Rajagopal, Κ. R.

doi:10.1617/s11527-020-01554-0

Cited by 8 publications

(2 citation statements)

References 38 publications

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“…There are Hooke bodies that characterize linear elastic behavior, linear viscous elements (Newtonian bodies) that represent proportional to the deformation rate, and sliders that describe the characteristics of plastic yield deformation in classical viscoelasticity. Differential or integral constitutive models such as Kelvin model, generalized Maxwell model, Burgers model and Nishihara model can be established to characterize the linear viscoelastic deformation of materials by combining different components reasonably [25][26][27][28]. However, the characterization of linear mechanical behavior makes the classical viscoelastic mechanical model unable to effectively solve the problem of nonlinear viscoelastic behavior of materials.…”

Section: Introductionmentioning

confidence: 99%

A fractional-order creep constitutive model considering the viscoelastic - viscoplastic coexistence mechanism

Zhao

Xie

et al. 2023

Preprint

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In order to improve the accuracy and universality of the nonlinear viscoelastic-plastic mechanical behavior characterization method of asphalt mixture, a new criterion for the division of creep process of materials is established based on the strain yield characteristics, and the coexistence mechanism of viscoelastic-viscoplastic strain is proposed in the subsequent yield stage; Then, a novel viscoelastic element in the form of parallel connection of two fractional viscoelastic elements is established based on the theory of fractional calculus, and its mathematical equation is derived; With the novel viscoelastic element, a constitutive model characterizing the whole process of creep of asphalt mixture is established, and its analytical expression is derived. The laboratory short-term creep test of Cement and Asphalt Mortar (CA mortar) and the simulation test data of asphalt mixture from the references were used to verify the constitutive model. The results show that the constitutive model has good adaptability to the creep characteristics of different types of asphalt mixture under different stress levels.So, the model can used to provide a theoretical reference for the study of the mechanical behavior characterization of asphalt materials.

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Section: Introductionmentioning

confidence: 99%

A fractional-order creep constitutive model considering the viscoelastic - viscoplastic coexistence mechanism

Zhao

Xie

et al. 2023

Preprint

View full text Add to dashboard Cite

show abstract

“…At first, most of these approaches were aimed at constructing constitutive models capable of characterizing the mechanical behavior of linear viscoelasticity [ 25 , 26 ]. As nonlinear problems became more and more prominent and intractable in the engineering field [ 27 ], some researchers began to study the nonlinear mechanical behavior of asphalt mixture under complex conditions through the measures of the nonlinear correction of the components in the viscoelastic constitutive model or the establishment of new elements adapted to nonlinear mechanical behavior combined with relevant nonlinear theories. In this regard, Zhang [ 28 ] introduced the strain equicalent principle of damage mechanics, establishing a type of nonlinear viscoelastic-plastic damage constitutive model.…”

Section: Introductionmentioning

confidence: 99%

A Fractional Creep Constitutive Model Considering the Viscoelastic–Viscoplastic Coexistence Mechanism

Zhao,

Xie

et al. 2023

Materials

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In order to improve the accuracy and universality of the nonlinear viscoelastic-plastic mechanical behavior characterization method of asphalt mixture, a new criterion for the division of the creep process of materials was established based on the strain yield characteristics, and the coexistence mechanism of Viscoelastic–Viscoplastic strain was proposed in the subsequent yield phase; then, a viscoelastic element was constructed in the form of a parallel connection of two fractional viscoelastic elements based on fractional calculus theory, and its mathematical equations were derived; with novel viscoelastic elements, a constitutive model characterizing the whole creep process of asphalt mixtures was developed and its analytical expression was derived. The laboratory short-term creep test of Cement and Asphalt Mortar (CA mortar) and the simulation test data of asphalt mixtures from the references were used to verify the constitutive model. The results show that the creep constitutive model of asphalt mixture established in this paper has excellent fitting accuracy for different phases of the creep process of asphalt mixture under different stress levels, where the minimum fitting correlation values R2 for CA mortar, asphalt mixture (applied to pavement engineering), and asphalt sand are 0.9976, 0.981, and 0.979, respectively. Therefore, this model can be used to provide a theoretical reference for the study of the characterization of the mechanical behavior of asphalt materials.

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Performance evolution mechanism and affecting factors of emulsified asphalt cold recycled mixture performance: A state-of art review

He,

Li,

Zhang

et al. 2024

Construction and Building Materials

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Analysis of reclaimed asphalt blended binders using linear and nonlinear viscoelasticity frameworks

Cited by 8 publications

References 38 publications

A fractional-order creep constitutive model considering the viscoelastic - viscoplastic coexistence mechanism

A fractional-order creep constitutive model considering the viscoelastic - viscoplastic coexistence mechanism

A Fractional Creep Constitutive Model Considering the Viscoelastic–Viscoplastic Coexistence Mechanism

Performance evolution mechanism and affecting factors of emulsified asphalt cold recycled mixture performance: A state-of art review

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