Structural response and sensitivity analysis of granular and asphaltic overlayment track considering linear viscoelastic behavior of asphalt

This study investigated the structural response of granular and asphaltic overlayment of rail track considering the linear viscoelastic behavior of asphalt. The calculation of the tensile strains at the bottom of the asphalt layer, the compressive stresses at the top of the subgrade layer, and the s...

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Autor principal:	Setiawan Dian M.
Formato:	article
Lenguaje:	EN
Publicado:	De Gruyter 2021
Materias:	asphaltic overlayment track asphalt tensile strain granular track kentrack subgrade compressive stress Mechanical engineering and machinery TJ1-1570
Acceso en línea:	https://doaj.org/article/3e4b9396cf7a45a3b3b65cd8bee7e4c4
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spelling	oai:doaj.org-article:3e4b9396cf7a45a3b3b65cd8bee7e4c42021-12-05T14:10:52ZStructural response and sensitivity analysis of granular and asphaltic overlayment track considering linear viscoelastic behavior of asphalt0334-89382191-024310.1515/jmbm-2021-0008https://doaj.org/article/3e4b9396cf7a45a3b3b65cd8bee7e4c42021-09-01T00:00:00Zhttps://doi.org/10.1515/jmbm-2021-0008https://doaj.org/toc/0334-8938https://doaj.org/toc/2191-0243This study investigated the structural response of granular and asphaltic overlayment of rail track considering the linear viscoelastic behavior of asphalt. The calculation of the tensile strains at the bottom of the asphalt layer, the compressive stresses at the top of the subgrade layer, and the service life of the granular and the asphaltic overlayment rail track were conducted using the KENTRACK software. Furthermore, the sensitivity analysis by changing different factors was studied in this paper. The results of this study indicate that the asphaltic overlayment rail track structure has a much longer predicted service life than the granular rail track. It was also shown that the sub-grade compressive stress is more sensitive to the change in subgrade modulus than the change in ballast-sub-ballast-asphalt layer thickness and the change in binder type, respectively. In addition, the asphalt tensile strain is more sensitive to the change in asphalt layer thickness than the change in subgrade modulus and the change in binder type, respectively. These findings also enhance our understanding that subgrade compressive stress and asphalt tensile strain in the asphaltic overlayment track are more sensitive to the change in asphalt layer thickness than the change in binder type.Setiawan Dian M.De Gruyterarticleasphaltic overlayment trackasphalt tensile straingranular trackkentracksubgrade compressive stressMechanical engineering and machineryTJ1-1570ENJournal of the Mechanical Behavior of Materials, Vol 30, Iss 1, Pp 66-86 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	asphaltic overlayment track asphalt tensile strain granular track kentrack subgrade compressive stress Mechanical engineering and machinery TJ1-1570
spellingShingle	asphaltic overlayment track asphalt tensile strain granular track kentrack subgrade compressive stress Mechanical engineering and machinery TJ1-1570 Setiawan Dian M. Structural response and sensitivity analysis of granular and asphaltic overlayment track considering linear viscoelastic behavior of asphalt
description	This study investigated the structural response of granular and asphaltic overlayment of rail track considering the linear viscoelastic behavior of asphalt. The calculation of the tensile strains at the bottom of the asphalt layer, the compressive stresses at the top of the subgrade layer, and the service life of the granular and the asphaltic overlayment rail track were conducted using the KENTRACK software. Furthermore, the sensitivity analysis by changing different factors was studied in this paper. The results of this study indicate that the asphaltic overlayment rail track structure has a much longer predicted service life than the granular rail track. It was also shown that the sub-grade compressive stress is more sensitive to the change in subgrade modulus than the change in ballast-sub-ballast-asphalt layer thickness and the change in binder type, respectively. In addition, the asphalt tensile strain is more sensitive to the change in asphalt layer thickness than the change in subgrade modulus and the change in binder type, respectively. These findings also enhance our understanding that subgrade compressive stress and asphalt tensile strain in the asphaltic overlayment track are more sensitive to the change in asphalt layer thickness than the change in binder type.
format	article
author	Setiawan Dian M.
author_facet	Setiawan Dian M.
author_sort	Setiawan Dian M.
title	Structural response and sensitivity analysis of granular and asphaltic overlayment track considering linear viscoelastic behavior of asphalt
title_short	Structural response and sensitivity analysis of granular and asphaltic overlayment track considering linear viscoelastic behavior of asphalt
title_full	Structural response and sensitivity analysis of granular and asphaltic overlayment track considering linear viscoelastic behavior of asphalt
title_fullStr	Structural response and sensitivity analysis of granular and asphaltic overlayment track considering linear viscoelastic behavior of asphalt
title_full_unstemmed	Structural response and sensitivity analysis of granular and asphaltic overlayment track considering linear viscoelastic behavior of asphalt
title_sort	structural response and sensitivity analysis of granular and asphaltic overlayment track considering linear viscoelastic behavior of asphalt
publisher	De Gruyter
publishDate	2021
url	https://doaj.org/article/3e4b9396cf7a45a3b3b65cd8bee7e4c4
work_keys_str_mv	AT setiawandianm structuralresponseandsensitivityanalysisofgranularandasphalticoverlaymenttrackconsideringlinearviscoelasticbehaviorofasphalt
_version_	1718371642202128384

Structural response and sensitivity analysis of granular and asphaltic overlayment track considering linear viscoelastic behavior of asphalt

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