Journal ArticleDOI
Viscoelastic Modeling and Field Validation of Flexible Pavements
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TLDR
In this paper, a three-dimensional finite element (FE) model was developed to simulate pavement responses to vehicular loading at different temperatures and speeds, and compared with field-measured pavement responses from the Virginia Smart Road.Abstract:
The objective of this study was to characterize hot-mix asphalt (HMA) viscoelastic properties at intermediate and high temperatures and to incorporate laboratory-determined parameters into a three-dimensional finite element (FE) model to accurately simulate pavement responses to vehicular loading at different temperatures and speeds. Results of the developed FE model were compared against field-measured pavement responses from the Virginia Smart Road. Results of this analysis indicated that the elastic theory grossly underpredicts pavement responses to vehicular loading at intermediate and high temperatures. In addition, the elastic FE model could not simulate permanent deformation or delayed recovery, a known characteristic of HMA materials. In contrast, results of the FE viscoelastic model were in better agreement with field measurements. In this case, the average error in the prediction was less than 15%. The FE model successfully simulated retardation of the response in the transverse direction and rapid relaxation of HMA in the longitudinal direction. Moreover, the developed model allowed predicting primary rutting damage at the surface and its partial recovery after load application.read more
Citations
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Investigation of viscoelastic behaviour and permanent deformation modelling for New Zealand hot mix asphalts
TL;DR: The Co-Authorship Form (CFA) as discussed by the authors is a co-authorship form that allows co-authors to submit their work to the CoAuthorship Evaluation System (CES).
Journal ArticleDOI
Numerical modeling of a ballastless track mockup based on asphalt
TL;DR: In this paper, a 3D mechanical model of a ballastless asphalt track mockup was developed within the general-purpose finite element software ABAQUS, which consisted of three wide-base sleepers equipped with a geotextile at the bottom, supported on an asphalt pavement structure encapsulated in a large rigid box.
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Finite Element Analysis Of Airfield Flexible Pavement
TL;DR: In this paper, the authors presented a numerical study of an aircraft wheel impacting on a fl exible landing surface, and the results demonstrate the capability of the model in predicting the permanent deformation distribution in the asphalt layer.
Journal ArticleDOI
Integrated Vehicle–Tire–Pavement Approach for Determining Pavement Structure–Induced Rolling Resistance under Dynamic Loading
Xiuyu Liu,Imad L. Al-Qadi +1 more
TL;DR: In this article , an integrated vehicle-tire-pavement approach was presented to evaluate asphalt pavement structure-induced rolling resistance under dynamic loading, where a 3D semi-trailer-truck model was used to calculate dynamic wheel loads on various pavement surface roughness profiles.
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Techniques of geomatics and soft computing for the monitoring of infrastructures and the management of big data
TL;DR: In this article, the authors explored the factors why a child of a child must work, policies in control the growth rate of child labor and finally in eliminating child labor in Indonesia and found that coordination and synchronization between related parties in forms of social workers, government, community and stakeholders are needed.
References
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Book
Viscoelastic properties of polymers
TL;DR: In this article, the authors describe the nature of Viscoelastic behavior of polymeric systems and approximate relations among the linear Viscoels and approximate interrelations among the Viscelastic Functions.
Journal Article
Simple performance test for superpave mix design
TL;DR: In this paper, the authors present the findings of a research task to identify a simple test for confirming key performance characteristics of Superpave volumetric mix designs, including permanent deformation, fatigue cracking, and low-temperature cracking.
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Methods of interconversion between linear viscoelastic material functions. Part I-a numerical method based on Prony series
S.W. Park,R.A. Schapery +1 more
TL;DR: Schapery and Park as discussed by the authors presented an approximate analytical interconversion method for linear viscoelastic material functions based on a Prony series representation using experimental data from selected polymeric materials.
Development and validation of performance prediction models and specifications for asphalt binders and paving mixes
TL;DR: The SHRP A-005 project developed detailed pavement performance models to support these binder and mixture specifications and performance-based mixture designs as mentioned in this paper, which can predict the amount of fatigue cracking, thermal cracking and rutting in asphalt concrete pavements.
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Stress Relaxation Studies of the Viscoelastic Properties of Polymers
TL;DR: In this article, extensive studies of the viscoelastic properties of polymers undertaken in the author's laboratory by means of the method of stress relaxation are reviewed and a rather complete over-all picture of these phenomena seems to be emerging.