Probabilistic Viscoelastic Continuum Damage Analysis of Fatigue Life of Warm-Mix Asphalt

Sadek, Husam; Sadeq, Mohammed; Masad, Eyad; Al-Khalid, Hussain; Şirin, Okan

doi:10.1061/jpeodx.0000128

Cited by 13 publications

(4 citation statements)

References 31 publications

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“…Specifically, the S app index refers to the average temperature of the climatic PG of the location where the pavement is constructed, minus 3 °C. The S app values usually vary within a range of 0 to 50, and higher values indicate better fatigue resistance [33,49].…”

Section: Background Of Vecd Theory and S-vecd Testing Approachmentioning

confidence: 99%

“…In fact, the main advantage of the S-VECD approach is that it allows to determine the intrinsic properties of the material, thus removing the dependence of the test results from the specific testing and boundary conditions while ensuring, at the same time, the reduction of the test repetitions. The viscoelastic continuum damage (VECD) theory was originally conceived for the characterization of conventional hot mix asphalt (HMA), but more recently it has been successfully applied also to warm recycled asphalt mixtures [32,33], asphalt mixtures modified with waste plastic [34], and bio-asphalt mixtures containing bio-oil [35].…”

Section: Introductionmentioning

confidence: 99%

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Investigation of unaged and long-term aged bio-based asphalt mixtures containing lignin according to the VECD theory

et al. 2023

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In the near future, the world of civil and building engineering will be dominated by the advent of bio-materials. Even the road paving sector is involved in the transition towards more sustainable solutions, promoting at the same time environmental benefits and economic savings. Currently, one of the main goals is to ensure that bio-binders offer good performance, at least comparable with that offered by conventional materials. In the last decades, the exponential increase in traffic volumes has led to various types of asphalt pavement distresses, among which fatigue cracking is one of the most common. Within this context, this study presents the characterization of a bio-based asphalt mixture obtained by replacing 30% of bitumen with lignin, which was compared with a reference asphalt mixture containing a plain bitumen characterised by the same penetration grade. Laboratory produced and compacted specimens were subjected to complex modulus and cyclic fatigue tests with the Asphalt Mixture Performance Tester (AMPT). Both unaged and long-term aging conditions were investigated. The tests and the subsequent analyses were based on the simplified viscoelastic continuum damage (S-VECD) approach. Overall, the results showed that the presence of lignin led to a lower aging susceptibility, but also caused a slight reduction in fatigue life due to an increase in the material stiffness. Furthermore, the obtained results confirmed previous findings deriving from the study of the two binders and from the conventional characterization of the same asphalt mixtures as well.

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Section: Background Of Vecd Theory and S-vecd Testing Approachmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Investigation of unaged and long-term aged bio-based asphalt mixtures containing lignin according to the VECD theory

et al. 2023

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“…Hence, Yang and Manning's stochastic fatigue crack growth model related to the stress intensity factor is limited. A probabilistic viscoelastic continuum damage model was employed to analyze the variability of asphalt materials [27], [28], [29]. Nevertheless, only the probability distribution curve of fatigue life was analyzed, and stochastic damage analysis for the entire fatigue damage process was not implemented and tracked.…”

Section: Introductionmentioning

confidence: 99%

Stochastic fatigue damage in viscoelastic materials using probabilistic pseudo J-integral Paris' law

Luo

Zhang

et al. 2021

Engineering Fracture Mechanics

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“…The framework developed by Liu [ 29 ] based on spectral methods ensures that the master curves of all viscoelastic variables complied with the LVE theory. Moreover, the relaxation and retardation spectrum are the most important parameters for the construction of viscoelastic continuous damage models (VECD) [ 30 , 31 , 32 ] and their probabilistic models [ 33 , 34 ].…”

Section: Introductionmentioning

confidence: 99%

The Discrete and Continuous Retardation and Relaxation Spectrum Method for Viscoelastic Characterization of Warm Mix Crumb Rubber-Modified Asphalt Mixtures

Zhang

Wang

et al. 2020

Materials

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To study the linear viscoelastic (LVE) of crumb rubber-modified asphalt mixtures before and after the warm mix additive was added methods of obtaining the discrete and continuous spectrum are presented. Besides, the relaxation modulus and creep compliance are constructed from the discrete and continuous spectrum, respectively. The discrete spectrum of asphalt mixtures can be obtained from dynamic modulus test results according to the generalized Maxwell model (GMM) and the generalized Kelvin model (GKM). Similarly, the continuous spectrum of asphalt mixtures can be obtained from the dynamic modulus test data via the inverse integral transformation. In this paper, the test procedure for all specimens was ensured to be completed in the LVE range. The results show that the discrete spectrum and the continuous spectrum have similar shapes, but the magnitude and position of the spectrum peaks is different. The continuous spectrum can be considered as the limiting case of the discrete spectrum. The relaxation modulus and creep compliance constructed by the discrete and continuous spectrum are almost indistinguishable in the reduced time range of 10−5 s–103 s. However, there are more significant errors outside the time range, and the maximum error is up to 55%.

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Probabilistic Viscoelastic Continuum Damage Analysis of Fatigue Life of Warm-Mix Asphalt

Cited by 13 publications

References 31 publications

Investigation of unaged and long-term aged bio-based asphalt mixtures containing lignin according to the VECD theory

Investigation of unaged and long-term aged bio-based asphalt mixtures containing lignin according to the VECD theory

Stochastic fatigue damage in viscoelastic materials using probabilistic pseudo J-integral Paris' law

The Discrete and Continuous Retardation and Relaxation Spectrum Method for Viscoelastic Characterization of Warm Mix Crumb Rubber-Modified Asphalt Mixtures

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