A closer look at the locked-wheel pavement friction data in the ltpp database for selected states

Pavement friction data from the Long-Term Pavement Performance (LTPP) database were treated and analyzed in order to examine its quality, patterns, and potential use. Data from a number of states along with Puerto Rico, Ontario, and Saskatchewan were sorted by availability of traffic information, te...

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Autores principales:	Maher M. Murad, Khaled A. Abaza
Formato:	article
Lenguaje:	EN
Publicado:	Taylor & Francis Group 2019
Materias:	pavement friction skid resistance ltpp trends maintenance esal Engineering (General). Civil engineering (General) TA1-2040
Acceso en línea:	https://doaj.org/article/2f63b1411e8e415999e9d8507e841b6e
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spelling	oai:doaj.org-article:2f63b1411e8e415999e9d8507e841b6e2021-11-04T15:51:56ZA closer look at the locked-wheel pavement friction data in the ltpp database for selected states2331-191610.1080/23311916.2019.1690214https://doaj.org/article/2f63b1411e8e415999e9d8507e841b6e2019-01-01T00:00:00Zhttp://dx.doi.org/10.1080/23311916.2019.1690214https://doaj.org/toc/2331-1916Pavement friction data from the Long-Term Pavement Performance (LTPP) database were treated and analyzed in order to examine its quality, patterns, and potential use. Data from a number of states along with Puerto Rico, Ontario, and Saskatchewan were sorted by availability of traffic information, testing temperature, and pavement type. The majority of the sections considered have relatively low ESAL. There is evidence of good quality control in Friction Number (FN) measurements. The difference in FN values between the beginning and end of a section is consistent with ASTM standards. The distribution of FN measurements can be used as a pavement management tool to identify sections that may need maintenance for friction restoration. There is a great deal of variability in the FN data in spite of temperature correction, especially at higher values of ESAL. Many of the selected sections display a trend of general decrease in FN at higher ESAL. However, factors other than traffic, such as mix design properties, may also need to be considered. Some testing information, such as the tire type used, is not available in the database and was obtained by an external survey. Traffic data in the form of Equivalent Single Axle Load (ESAL) are available, but not for the entire life of the pavement, and had to be supplemented with projections. The friction data in the LTPP database can be more useful for researchers and professionals if updated to include some missing parameters.Maher M. MuradKhaled A. AbazaTaylor & Francis Grouparticlepavement frictionskid resistanceltpptrendsmaintenanceesalEngineering (General). Civil engineering (General)TA1-2040ENCogent Engineering, Vol 6, Iss 1 (2019)
institution	DOAJ
collection	DOAJ
language	EN
topic	pavement friction skid resistance ltpp trends maintenance esal Engineering (General). Civil engineering (General) TA1-2040
spellingShingle	pavement friction skid resistance ltpp trends maintenance esal Engineering (General). Civil engineering (General) TA1-2040 Maher M. Murad Khaled A. Abaza A closer look at the locked-wheel pavement friction data in the ltpp database for selected states
description	Pavement friction data from the Long-Term Pavement Performance (LTPP) database were treated and analyzed in order to examine its quality, patterns, and potential use. Data from a number of states along with Puerto Rico, Ontario, and Saskatchewan were sorted by availability of traffic information, testing temperature, and pavement type. The majority of the sections considered have relatively low ESAL. There is evidence of good quality control in Friction Number (FN) measurements. The difference in FN values between the beginning and end of a section is consistent with ASTM standards. The distribution of FN measurements can be used as a pavement management tool to identify sections that may need maintenance for friction restoration. There is a great deal of variability in the FN data in spite of temperature correction, especially at higher values of ESAL. Many of the selected sections display a trend of general decrease in FN at higher ESAL. However, factors other than traffic, such as mix design properties, may also need to be considered. Some testing information, such as the tire type used, is not available in the database and was obtained by an external survey. Traffic data in the form of Equivalent Single Axle Load (ESAL) are available, but not for the entire life of the pavement, and had to be supplemented with projections. The friction data in the LTPP database can be more useful for researchers and professionals if updated to include some missing parameters.
format	article
author	Maher M. Murad Khaled A. Abaza
author_facet	Maher M. Murad Khaled A. Abaza
author_sort	Maher M. Murad
title	A closer look at the locked-wheel pavement friction data in the ltpp database for selected states
title_short	A closer look at the locked-wheel pavement friction data in the ltpp database for selected states
title_full	A closer look at the locked-wheel pavement friction data in the ltpp database for selected states
title_fullStr	A closer look at the locked-wheel pavement friction data in the ltpp database for selected states
title_full_unstemmed	A closer look at the locked-wheel pavement friction data in the ltpp database for selected states
title_sort	closer look at the locked-wheel pavement friction data in the ltpp database for selected states
publisher	Taylor & Francis Group
publishDate	2019
url	https://doaj.org/article/2f63b1411e8e415999e9d8507e841b6e
work_keys_str_mv	AT mahermmurad acloserlookatthelockedwheelpavementfrictiondataintheltppdatabaseforselectedstates AT khaledaabaza acloserlookatthelockedwheelpavementfrictiondataintheltppdatabaseforselectedstates AT mahermmurad closerlookatthelockedwheelpavementfrictiondataintheltppdatabaseforselectedstates AT khaledaabaza closerlookatthelockedwheelpavementfrictiondataintheltppdatabaseforselectedstates
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A closer look at the locked-wheel pavement friction data in the ltpp database for selected states

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