Influence of Asphalt Visco-Elastic Properties on Flexible Pavement Performance

Even though every layer of pavement structure is important and affects pavement performance, the asphalt layers visco-elasticity plays significant role. Bitumen properties, as well as asphalt mixture properties, vary depending on temperature and loading conditions. These variations influence entire...

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Main Authors: Rita Kleizienė, Audrius Vaitkus, Donatas Čygas
Format: Article
Language:English
Published: RTU Press 2016-12-01
Series:The Baltic Journal of Road and Bridge Engineering
Subjects:
Online Access:https://bjrbe-journals.rtu.lv/article/view/3408
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author Rita Kleizienė
Audrius Vaitkus
Donatas Čygas
author_facet Rita Kleizienė
Audrius Vaitkus
Donatas Čygas
author_sort Rita Kleizienė
collection DOAJ
description Even though every layer of pavement structure is important and affects pavement performance, the asphalt layers visco-elasticity plays significant role. Bitumen properties, as well as asphalt mixture properties, vary depending on temperature and loading conditions. These variations influence entire pavement bearing capacity and has to be evaluated in pavement design. The main challenge is material behaviour description through simple models to incorporate them to pavement design. Generally, pavements are designed using Multilayer Elastic Theory assuming that all materials are elastic, isotropic, and homogenous. This paper presents analysis of two pavement structures response calculated according to three pavement design approaches. The dynamic modulus and phase angle of asphalt mixtures was estimated using Hirsch model after binder complex shear modulus tests. The visco-elastic behaviour was described with rheological Huet-Sayegh model and pavement responses estimation was done using MnLayer and ViscoRoute2 software. The analysis reviled static and dynamic load influence on pavement structure based on elastic and visco-elastic properties of asphalt layers. This allowed optimisation of layer thicknesses and determination of more cost beneficial pavement structure with appropriate performance.
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spelling doaj.art-8cfa8e6102064ad5af24ad4a8e6292842022-12-21T22:47:26ZengRTU PressThe Baltic Journal of Road and Bridge Engineering1822-427X1822-42882016-12-0111410.3846/bjrbe.2016.361856Influence of Asphalt Visco-Elastic Properties on Flexible Pavement PerformanceRita Kleizienė0Audrius Vaitkus1Donatas Čygas2Road Research Institute, Vilnius Gediminas Technical University, Linkmenų g. 28, 08217 Vilnius, LithuaniaRoad Research Institute, Vilnius Gediminas Technical University, Linkmenų g. 28, 08217 Vilnius, LithuaniaDept of Roads, Vilnius Gediminas Technical University, Saulėtekio al. 11, 10223 Vilnius, LithuaniaEven though every layer of pavement structure is important and affects pavement performance, the asphalt layers visco-elasticity plays significant role. Bitumen properties, as well as asphalt mixture properties, vary depending on temperature and loading conditions. These variations influence entire pavement bearing capacity and has to be evaluated in pavement design. The main challenge is material behaviour description through simple models to incorporate them to pavement design. Generally, pavements are designed using Multilayer Elastic Theory assuming that all materials are elastic, isotropic, and homogenous. This paper presents analysis of two pavement structures response calculated according to three pavement design approaches. The dynamic modulus and phase angle of asphalt mixtures was estimated using Hirsch model after binder complex shear modulus tests. The visco-elastic behaviour was described with rheological Huet-Sayegh model and pavement responses estimation was done using MnLayer and ViscoRoute2 software. The analysis reviled static and dynamic load influence on pavement structure based on elastic and visco-elastic properties of asphalt layers. This allowed optimisation of layer thicknesses and determination of more cost beneficial pavement structure with appropriate performance.https://bjrbe-journals.rtu.lv/article/view/3408asphalt dynamic moduluspavement designpavement performancepredictive modelmaster curvemul¬tilayer-elastic theory.
spellingShingle Rita Kleizienė
Audrius Vaitkus
Donatas Čygas
Influence of Asphalt Visco-Elastic Properties on Flexible Pavement Performance
The Baltic Journal of Road and Bridge Engineering
asphalt dynamic modulus
pavement design
pavement performance
predictive model
master curve
mul¬tilayer-elastic theory.
title Influence of Asphalt Visco-Elastic Properties on Flexible Pavement Performance
title_full Influence of Asphalt Visco-Elastic Properties on Flexible Pavement Performance
title_fullStr Influence of Asphalt Visco-Elastic Properties on Flexible Pavement Performance
title_full_unstemmed Influence of Asphalt Visco-Elastic Properties on Flexible Pavement Performance
title_short Influence of Asphalt Visco-Elastic Properties on Flexible Pavement Performance
title_sort influence of asphalt visco elastic properties on flexible pavement performance
topic asphalt dynamic modulus
pavement design
pavement performance
predictive model
master curve
mul¬tilayer-elastic theory.
url https://bjrbe-journals.rtu.lv/article/view/3408
work_keys_str_mv AT ritakleiziene influenceofasphaltviscoelasticpropertiesonflexiblepavementperformance
AT audriusvaitkus influenceofasphaltviscoelasticpropertiesonflexiblepavementperformance
AT donatascygas influenceofasphaltviscoelasticpropertiesonflexiblepavementperformance