Validation of a simplified method in viscoelastic continuum damage (VECD) model developed for flexural mode of loading

Haddadi, Farshad; Ameri, Mahmoud; Mirabimoghadam, M. H.; Hosseini, Hamid

doi:10.1016/j.conbuildmat.2015.07.184

Cited by 27 publications

(9 citation statements)

References 11 publications

(17 reference statements)

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“…where E(t) is the relaxation modulus, E ∞ is the long-term equilibrium modulus, E i is the components of relaxation modulus, ρ i is the relaxation time, and N is the number of elements in Prony series. Based on the concept of the pseudostrain and continuous damage theory, the pseudostiffness C is the ratio of the peak stress to the corresponding pseudostrain [17]:…”

Section: Vecd Modelmentioning

confidence: 99%

“…Haddadi et al used the VECD model to study the fatigue behavior of asphalt mixtures. e material constant a was inversely proportional to the slope of the central part of the relaxation modulus curve obtained by the bending dynamic test with a four-point bending beam device [17]. Sabouri and Kim proposed a new failure criterion using the VECD model and pointed out that the characteristic relationship between the average release rate of the pseudostrain energy and the final fatigue life during fatigue testing of recycled asphalt mixtures and nonrecycled asphalt mixtures was independent of the loading mode, strain amplitude, and temperature [18].…”

Section: Introductionmentioning

confidence: 99%

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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: Vecd Modelmentioning

confidence: 99%

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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“…Asphalt pavements are subject to increased tensions due to increased traffic volume and truck traffic (higher tire pressure) which cause cracking, permanent deformation, and surface wear and reduce the asphalt skid resistance [1][2][3]. Rutting or permanent deformation is a main failure distress that affects asphalt pavement performance especially in areas with hot climate and heavy traffic load.…”

Section: Introductionmentioning

confidence: 99%

Investigating Effects of Nano/SBR Polymer on Rutting Performance of Binder and Asphalt Mixture

Ameri

Vamegh

Rooholamini

et al. 2018

Advances in Materials Science and Engineering

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Rutting is one of the most common distresses in flexible pavements and can affect vehicle controlling features. Although asphalt binder constitutes a small percentage of the asphalt mixture, its properties play a crucial role in pavement performance and its rutting resistance. One way of improving binder properties and rutting resistance is to use additives. In this research, nanoclay and SBR polymer have been simultaneously used to modify 60–70 penetration binder to study rutting resistance of binder and asphalt mixture. To this end, the storage stability, rotational viscosity, DSR, and RCR tests on binder and marshal stability were performed, and dynamic creep and wheel track tests on asphalt mix were performed to assess rutting performance. The test and statistical analysis results indicated that nanoclay has considerably positive impact on rutting and elastic deformation of neat and SBR-modified asphalt binder and mixture.

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“…During the service life, the condition is degraded due to the environment and wheel load e ect on the pavement [11,12]. e maintenance treatment is applied to the pavement surface to improve pavement condition and prevent further degradation of pavement condition.…”

Section: Introductionmentioning

confidence: 99%

Pavement Manager at Risk in Construction of Hot Mix Asphalt

Ali

Baqersad

2018

Advances in Civil Engineering

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Pavement management is part science, part management, and part experience. After several decades of promoting pavement management, many road owners are still reluctant to use it as they lack the knowledge, the experience, or the confidence. The problem is further complicated by the emergence of a large list of new products and techniques that are self-proclaimed to achieve miracles but fall short. The outcome of this arrangement is that thousands of miles of roads still cost more to maintain than if effective pavement preservation techniques were used. This paper attempts to resolve this dilemma by introducing the role of Pavement Manager at Risk (PMAR), allowing a Pavement Manager to offer a long-term pavement preservation service to a client in return for a fixed per-mile premium. This allows the knowledgeable Pavement Manager, who would typically be a Pavement Engineer or a practitioner with extensive knowledge and experience, to implement effective pavement preservation techniques and share the economic benefit with the owner. In this study, the responsibilities of the Pavement Manager at Risk (PMAR) will be introduced. The type of analysis it needs to run will be demonstrated in a case study. In this paper, a sample analysis is presented to present the financial aspects of managing a network of local roads. Pavement treatment cost, pavement condition, and treatment life extension in addition to the admin, mobilization, striping, and occasional patches expenses are presented. The benefits and risks of this approach are described.

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Validation of a simplified method in viscoelastic continuum damage (VECD) model developed for flexural mode of loading

Cited by 27 publications

References 11 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

Investigating Effects of Nano/SBR Polymer on Rutting Performance of Binder and Asphalt Mixture

Pavement Manager at Risk in Construction of Hot Mix Asphalt

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