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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Proceedings ArticleDOI
Inherent Variability in the Parameters Describing the Linear Viscoelastic Response of Asphalt Concrete
Proceedings ArticleDOI
Mechanical Response of Modified Asphalt Pavements
TL;DR: In this article, the authors used the Indian Road Congress code of practice for pavement design in the stress-analysis of pavement cross-section as stipulated by the Indian Roads Congress.
Journal ArticleDOI
Analytical evaluation of the rutting critical response function under the heavy vehicle’s moving in flexible pavement
TL;DR: In this paper, the authors obtained and analyzed the rutting critical response function under heavy trucks using Abaqus three-dimensional finite element and particle swarm optimization (PSO) methods.
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UAVs and GIS: An Innovative System for Monitoring Structures
TL;DR: In this article , an experimental system for the assessment of the structural conditions of buildings and infrastructures through continuous monitoring stations based on the use of UAVs is presented.
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.
Journal ArticleDOI
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.
Journal ArticleDOI
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.