Viscoelastic Modeling and Field Validation of Flexible Pavements

Elseifi, Mostafa A.; Al-Qadi, Imad L.; Yoo, Pyeong Jun

doi:10.1061/(asce)0733-9399(2006)132:2(172)

Cited by 161 publications

(49 citation statements)

References 3 publications

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“…The seco perform in elastic-plasti model, was c Describin materials a constitutive m practice [64] , (1) where: E′ -equivalent modulus equal E′ =…”

Section: Model Of Multiple-layer Pavement Structure-subsoil Systemmentioning

confidence: 99%

Model of multiple-layer pavement structure-subsoil system

Kadela¹

2016

Bulletin of the Polish Academy of Sciences Technical Sciences

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Abstract. Progress made in recent years has brought about a high demand for increasingly modern structural and technological solutions. Each structure should in turn be designed and built to show sufficient durability for the intended period of use. The requirement of durability is met if, throughout its intended lifetime, the structure fulfils its roles regarding load-bearing capacity, serviceability limits and stability without excessive, unexpected costs. Due to the above, a need arises to predict the response of an engineering structure to given loads throughout its life. Thus it becomes increasingly common to employ numerical analyses using the finite elements method (FEM), both on the design stage and later, for the purposes of evaluating the state of a specific structure. However, a numerical calculation model may be constructed in different ways. This paper presents the impact of geometry of the model, the choice of a discretization mesh and the choice of a continuous 3D or 2D model corresponding to pavement-subgrade system calculation model. 3-dimensional modelling was carried out in this paper as full modelling of actual engineering problems in 3-dimensional space, and in the form of simplified modelling using axial symmetry. In the model, a traditional multi-layer pavement structure was considered. Criterion values obtained in numerical analyses were compared to values obtained with the use of VEROAD software.Key words: road pavement, mechanical methods, multi-layer structure, calculation model, finite element analysis (FEA).Model of multiple-layer pavement structure-subsoil system M. KADELA * Building Research Institute, 1 Filtrowa St., 00-611 Warsaw, Poland i.e. horizontal or vertical extension, etc. The global trend of transforming issues of reality into problems of mechanics is visible in the approach adopted in Eurocodes. For example, Eurocode 7 introduces a new concept of geotechnical design, which interconnects, among others, the construction law, standards, design and execution instructions, field and laboratory tests, determining loads for the analyzed system and adoption of calculation models. It thus becomes vital to choose the correct procedure which will allow to describe the behavior of the analyzed structure in all predicted phases of its work. Theories of mechanics employed in the evaluation of structure performance involve certain simplifications; they use models which may considerably deviate from the real structure performance, making their practical application difficult. Creation of a full, credible calculation model therefore automatically implies the use of numerical methods in the analyses.It should be noted that the numerical tool in the form of a numerical calculation model may be ambiguous to some extent, as in general a model may be created in different ways [10]. The differences are mostly influenced by:• geometry of the calculation model and the manner of applying boundary conditions, • adoption of constitutive models for materials used for layers of the structures and th...

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“…The seco perform in elastic-plasti model, was c Describin materials a constitutive m practice [64] , (1) where: E′ -equivalent modulus equal E′ =…”

Section: Model Of Multiple-layer Pavement Structure-subsoil Systemmentioning

confidence: 99%

Model of multiple-layer pavement structure-subsoil system

Kadela¹

2016

Bulletin of the Polish Academy of Sciences Technical Sciences

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“…loading=690 kpa, speed=20 passes/min b. loading=690 kpa, speed=40 passes/min The hot-mix asphalt viscoelastic properties studies carried [Elseifi et al 2006] at intermediate and high temperatures indicated that at high temperatures or under slow moving loads, HMA exhibited a purely viscous flow, which resulted in load-associated distresses such as pavement rutting. However he concluded that, at low service temperatures or under rapidly applied loading, HMA became progressively harder and eventually brittle, which made it vulnerable to non-load-associated distresses such as low-temperature cracking.…”

Section: Thermal Properties Of Ac Materialsmentioning

confidence: 99%

Analysis of effects of high temperature and heavy traffic loads on anti-rutting performance of Gravel Asphalt Concrete mixtures

Zhu¹,

Wang²,

Huang³

2016

Functional Pavement Design

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“…Elseifi et al [7] conducted a comparative study between the elastic FE model and the linear viscoelastic FE model and concluded that it is imperative to incorporate a viscoelastic constitutive model into pavement design methods for improved accuracy. Yin et al [8] showed that 3-D finite element modelling utilizing viscoelastic material properties provides reasonable prediction of strain response in the field.…”

Section: Introductionmentioning

confidence: 99%

Finite element analysis for airfield asphalt pavements rutting prediction

Leonardi¹

2015

Bulletin of the Polish Academy of Sciences Technical Sciences

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Abstract. This paper presents a numerical study of an aircraft wheel impacting on a flexible pavement. The proposed three dimensional model simulates the behaviour of flexible runway pavement during the landing phase. This model was implemented in a finite element code in order to investigate the impact of repeated cycles of loads on pavement permanent deformation.In the model a traditional multi-layer pavement structure was considered. In addition, the asphalt layer (HMA) was assumed to follow an elasto-viscoplastic behaviour.The results demonstrate the capability of the model in predicting the permanent deformation distribution in the asphalt layer.

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Viscoelastic Modeling and Field Validation of Flexible Pavements

Cited by 161 publications

References 3 publications

Model of multiple-layer pavement structure-subsoil system

Model of multiple-layer pavement structure-subsoil system

Analysis of effects of high temperature and heavy traffic loads on anti-rutting performance of Gravel Asphalt Concrete mixtures

Finite element analysis for airfield asphalt pavements rutting prediction

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