Investigation of flexible pavement maintenance patching factors using a finite element model

Abstract Patching of flexible pavements is one of the most important functions of pavement maintenance. Although finite element modeling has become commonplace in the world of pavement engineering, modeling has not yet been significantly leveraged for maintenance applications which improve safety, r...

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Autores principales:	Yujia Lu, Ramez Hajj
Formato:	article
Lenguaje:	EN
Publicado:	SpringerOpen 2021
Materias:	Pavement Patching Asphalt Maintenance Engineering (General). Civil engineering (General) TA1-2040
Acceso en línea:	https://doaj.org/article/c5c5f93e698a42cfa453543e0d9cff95
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spelling	oai:doaj.org-article:c5c5f93e698a42cfa453543e0d9cff952021-11-08T10:56:30ZInvestigation of flexible pavement maintenance patching factors using a finite element model10.1186/s43065-021-00044-z2662-2521https://doaj.org/article/c5c5f93e698a42cfa453543e0d9cff952021-11-01T00:00:00Zhttps://doi.org/10.1186/s43065-021-00044-zhttps://doaj.org/toc/2662-2521Abstract Patching of flexible pavements is one of the most important functions of pavement maintenance. Although finite element modeling has become commonplace in the world of pavement engineering, modeling has not yet been significantly leveraged for maintenance applications which improve safety, ride quality, and pavement service life. The objective of this study was to model viscoelastic properties of pavement and patching materials to determine the effect of various repair factors on pavement performance using the finite element method. Specifically, surface permanent deformation, local shear stress concentration, and horizontal strain distribution were investigated. Two types of models were simulated; the first model applied static loading to a surface layer fixed on a plate and the second model applied cyclic traffic loading to a two-layered flexible pavement system. The results demonstrate the importance of patching using a semi-permanent method. The results also demonstrated the accumulated effect of repeated loading using a time-dependent material response. Results also indicated that a larger patching area resulted in less influence of the shape of the area, while a circular area proved superior to a conventional rectangular patch for sizes near the tire footprint and smaller than it. Different responses were observed depending on the type of patching material modeled, demonstrating the effect of material choice in maintenance applications. Finally, mesh optimization was performed to ensure appropriate mesh sizes are used in future studies to accurately represent the pavement layers and patches.Yujia LuRamez HajjSpringerOpenarticlePavementPatchingAsphaltMaintenanceEngineering (General). Civil engineering (General)TA1-2040ENJournal of Infrastructure Preservation and Resilience, Vol 2, Iss 1, Pp 1-16 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Pavement Patching Asphalt Maintenance Engineering (General). Civil engineering (General) TA1-2040
spellingShingle	Pavement Patching Asphalt Maintenance Engineering (General). Civil engineering (General) TA1-2040 Yujia Lu Ramez Hajj Investigation of flexible pavement maintenance patching factors using a finite element model
description	Abstract Patching of flexible pavements is one of the most important functions of pavement maintenance. Although finite element modeling has become commonplace in the world of pavement engineering, modeling has not yet been significantly leveraged for maintenance applications which improve safety, ride quality, and pavement service life. The objective of this study was to model viscoelastic properties of pavement and patching materials to determine the effect of various repair factors on pavement performance using the finite element method. Specifically, surface permanent deformation, local shear stress concentration, and horizontal strain distribution were investigated. Two types of models were simulated; the first model applied static loading to a surface layer fixed on a plate and the second model applied cyclic traffic loading to a two-layered flexible pavement system. The results demonstrate the importance of patching using a semi-permanent method. The results also demonstrated the accumulated effect of repeated loading using a time-dependent material response. Results also indicated that a larger patching area resulted in less influence of the shape of the area, while a circular area proved superior to a conventional rectangular patch for sizes near the tire footprint and smaller than it. Different responses were observed depending on the type of patching material modeled, demonstrating the effect of material choice in maintenance applications. Finally, mesh optimization was performed to ensure appropriate mesh sizes are used in future studies to accurately represent the pavement layers and patches.
format	article
author	Yujia Lu Ramez Hajj
author_facet	Yujia Lu Ramez Hajj
author_sort	Yujia Lu
title	Investigation of flexible pavement maintenance patching factors using a finite element model
title_short	Investigation of flexible pavement maintenance patching factors using a finite element model
title_full	Investigation of flexible pavement maintenance patching factors using a finite element model
title_fullStr	Investigation of flexible pavement maintenance patching factors using a finite element model
title_full_unstemmed	Investigation of flexible pavement maintenance patching factors using a finite element model
title_sort	investigation of flexible pavement maintenance patching factors using a finite element model
publisher	SpringerOpen
publishDate	2021
url	https://doaj.org/article/c5c5f93e698a42cfa453543e0d9cff95
work_keys_str_mv	AT yujialu investigationofflexiblepavementmaintenancepatchingfactorsusingafiniteelementmodel AT ramezhajj investigationofflexiblepavementmaintenancepatchingfactorsusingafiniteelementmodel
_version_	1718442565165907968

Investigation of flexible pavement maintenance patching factors using a finite element model

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