Probabilistic analysis of fatigue life for asphalt mixtures using the viscoelastic continuum damage approach

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

doi:10.1016/j.conbuildmat.2016.09.029

Cited by 30 publications

(7 citation statements)

References 16 publications

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“…However, there are relatively few research studies on LSAM fatigue performance, especially on its constitutive model. e applications of the viscoelastic continuum damage (VECD) model for predicting the fatigue performance of asphalt mixtures have been widely used in the past two decades [12][13][14]. Wang and Kim proposed a failure criterion by using the VECD model and considered that the attenuation of the pseudostiffness is a material constant that is independent of the loading mode, temperature, and stress/ strain amplitude [15].…”

Section: Introductionmentioning

confidence: 99%

Investigating the Fatigue Characteristics of Large Stone Asphalt Mixtures Based on the Disturbed State Concept

Wei

Meng

et al. 2020

Advances in Materials Science and Engineering

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The mechanical response characteristics of large stone asphalt mixtures (LSAMs) are key factors in studying its fatigue characteristics during cyclic loading tests. Based on disturbed state concept (DSC) and viscoelastic continuum damage model (VECD), a series of tests using an overlay test (OT) were carried out to investigate the fatigue characteristics of LSAM. The results showed that disturbance and damage increased with decreasing frequency and increasing loading displacement and aging degree, while the asphalt content had no obvious adverse effect on the increase in damage. In addition, the disturbance and damage grew rapidly in the early stage of loading and reduced in the later stage of loading. On the contrary, based on DSC, the constitutive model modified with disturbance function (D) defined by external work could describe the mechanical properties, and the evolution process of disturbance function (D) could reflect the damage change in cyclic loading tests. The research conclusion can enrich the theoretical research on the fatigue failure response and mechanism of LSAM under cyclic loading and expand the application scope of DSC in the field of pavement.

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Section: Introductionmentioning

confidence: 99%

Investigating the Fatigue Characteristics of Large Stone Asphalt Mixtures Based on the Disturbed State Concept

Wei

Meng

et al. 2020

Advances in Materials Science and Engineering

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“…Lv S. et al [10] established a unified description model of fatigue equation of asphalt mixture under low temperature and low loading frequency, which means that the fatigue equations and curves under different loading frequencies could be characterized by one equation and one curve. Sadek et al [11] established a probabilistic framework that included the viscoelastic continuous damage method and considered the variability of input parameters. The analysis results under this framework were more consistent and reliable than those under deterministic viscoelastic continuous damage analysis.…”

Section: Introductionmentioning

confidence: 99%

Nonlinear Fatigue Damage Model of Asphalt Mixture Based on Dynamic Modulus and Residual Strength Decay

et al. 2019

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In order to describe the fatigue damage state of asphalt mixture more reasonably, direct tensile tests of the fatigue and the residual strength under stress levels of 1.00 MPa, 0.50 MPa and 0.25 MPa with five parallel tests were carried out. The trabecular specimens of AC-13C asphalt mixture (25 cm × 5 cm × 5 cm) were manufactured with Styrene-Butadiene-Styrene (SBS) modified asphalt, aggregate basalt and limestone mineral filler. The optimum asphalt-aggregate ratio was 5.2%. The dynamic modulus decay and the residual strength decay were termed as the damage variables to evaluate the fatigue damage process of asphalt mixtures, respectively. Based on the test results, the decay patterns of the dynamic modulus and the residual strength during fatigue tests under different stress states were revealed, and the model and the parameters of fatigue damage according to the corresponding decay patterns were obtained. Then, based on the assumption that the residual strength and dynamic modulus depend on the same damage state, the relationship between the two damage definitions was given, and the residual strength-dynamic modulus coupled model was established. The results showed that the residual strength-dynamic modulus coupled model could better describe the fatigue damage evolution law of asphalt mixture, and the parameter of this coupled model could be obtained by less residual strength tests. A modified formula for calculating the damage variables associated with residual strength and dynamic modulus was proposed based on the relationship between two kinds of damage variables.

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“…First the relationship between stresses and strains, then the law that governs the evolution of damage in the material and finally the dependency of the damage on the measurable variables that can be extracted from testing. Over the last 20 years this model has been developed to predict the behavior of mixtures under cyclic loading, and still today several authors are researching how to use and improve this methodology (Sabouri and Kim 2014;Park et al 2014;Sadek et al 2016).…”

Section: Introductionmentioning

confidence: 99%

New methodology to estimate the fatigue behavior of bituminous mixtures using a strain sweep test

Nieto

Jiménez

Recasens

et al. 2017

Construction and Building Materials

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Fatigue cracking of bituminous mixtures is closely related to the loss of ductility produced by the stiffening of the bituminous binder. The main two factors that cause the asphalt binder to lose its ductility are aging and exposure to low temperatures. However, most of the tests designed to evaluate the fatigue behavior of bituminous mixtures are very time consuming, and make unpractical those studies that try to evaluate the influence of many variables. In this research project a strain sweep test was used to analyze the influence of aging, test temperature and bituminous binder type on the fatigue behavior of a continuously graded mixture. As expected, the mixture with SBS polymer modified binder retained more ductility at low temperatures, while the mixture with crumb rubber modified binder had the highest stiffness modulus. All mixtures exhibited the worst fatigue behavior at low temperatures and aging was equivalent to testing an unaged mixture at a lower temperature. The main result of this paper was the implementation of a new methodology to estimate the fatigue law of the material using a strain sweep test, which allowed this fatigue analysis to be carried out in nearly 10 times less testing time than that required by the procedure described in the EN 12697-24 standard.Peer ReviewedPostprint (author's final draft

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Probabilistic analysis of fatigue life for asphalt mixtures using the viscoelastic continuum damage approach

Cited by 30 publications

References 16 publications

Investigating the Fatigue Characteristics of Large Stone Asphalt Mixtures Based on the Disturbed State Concept

Investigating the Fatigue Characteristics of Large Stone Asphalt Mixtures Based on the Disturbed State Concept

Nonlinear Fatigue Damage Model of Asphalt Mixture Based on Dynamic Modulus and Residual Strength Decay

New methodology to estimate the fatigue behavior of bituminous mixtures using a strain sweep test

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