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Author: Rebecca S. McDaniel
Publisher: Purdue University Press
ISBN: 9781622600762
Category : Transportation
Languages : en
Pages : 46
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Book Description
In 2003, the Indiana Department of Transportation and the Federal Highway Administration allowed a test section of Porous Friction Course (PFC) to be placed on I-74 east of Indianapolis. The design, construction and early performance of that surface were compared to an adjacent SMA surface and a conventional Superpave HMA surface in a report prepared for the Institute for Safe, Quiet and Durable Highways. The early performance indicated that the PFC offered several advantages over the SMA and the conventional surfaces, including reduced tire/pavement noise, high friction and surface texture, and reduced splash and spray. There was a concern, however, that porous surfaces can lose their porosity, and therefore their performance advantages, over time. Consequently, the project summarized in this report was planned to continue monitoring the performance of the PFC and the comparison surfaces in order to investigate the durability of the porous surface over a five-year period (after construction). After five years under traffic, there have indeed been some changes in these properties. Most of the changes, however, took place quickly as the asphalt binder film coating the exposed aggregate particles was worn off by traffic. Since then, the changes have been relatively minor. The PFC section is still significantly quieter than the adjacent SMA section to which it has been compared. The PFC has retained most of its texture and is still providing good friction levels. Both the PFC and the SMA are still in very good condition with little distress and have higher friction levels than a section of dense graded asphalt constructed with similar materials that has also been evaluated for the duration of the study.
Author: Rebecca S. McDaniel
Publisher: Purdue University Press
ISBN: 9781622600762
Category : Transportation
Languages : en
Pages : 46
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Book Description
In 2003, the Indiana Department of Transportation and the Federal Highway Administration allowed a test section of Porous Friction Course (PFC) to be placed on I-74 east of Indianapolis. The design, construction and early performance of that surface were compared to an adjacent SMA surface and a conventional Superpave HMA surface in a report prepared for the Institute for Safe, Quiet and Durable Highways. The early performance indicated that the PFC offered several advantages over the SMA and the conventional surfaces, including reduced tire/pavement noise, high friction and surface texture, and reduced splash and spray. There was a concern, however, that porous surfaces can lose their porosity, and therefore their performance advantages, over time. Consequently, the project summarized in this report was planned to continue monitoring the performance of the PFC and the comparison surfaces in order to investigate the durability of the porous surface over a five-year period (after construction). After five years under traffic, there have indeed been some changes in these properties. Most of the changes, however, took place quickly as the asphalt binder film coating the exposed aggregate particles was worn off by traffic. Since then, the changes have been relatively minor. The PFC section is still significantly quieter than the adjacent SMA section to which it has been compared. The PFC has retained most of its texture and is still providing good friction levels. Both the PFC and the SMA are still in very good condition with little distress and have higher friction levels than a section of dense graded asphalt constructed with similar materials that has also been evaluated for the duration of the study.
Author: Thomas D. White
Publisher:
ISBN:
Category : Friction materials
Languages : en
Pages : 64
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Book Description
Author: Gerald Huber
Publisher: Transportation Research Board
ISBN: 9780309068635
Category : Technology & Engineering
Languages : en
Pages : 124
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Book Description
This synthesis will be of interest to pavement construction, maintenance, design, and materials engineers; pavement contractors; and others interested in the use of open-graded friction course (OGFC) mixes. It describes the current state of the practice on the use of OGFC mixes, including information regarding design, materials, construction, maintenance, and rehabilitation strategies. Alternative treatments to traditional OGFC are also identified and discussed. Information was collected by surveying U.S. and Canadian transportation agencies and by conducting a literature search to gather additional insight into North American and European practices. This TRB report describes the recent performance of North American OGFC mixes and European porous asphalt by identifying benefits and stress indicators. A new generation of OGFC mixes has evolved over the last 5 years with changes that have been reported to dramatically improve performance. This synthesis describes new materials and design methods being used, as well as the applicability of the new generation of open-graded mixtures to North American use.
Author:
Publisher: DIANE Publishing
ISBN: 1428995234
Category :
Languages : en
Pages : 172
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Book Description
Author: Thomas D. White
Publisher:
ISBN:
Category : Pavements, Bituminous
Languages : en
Pages : 126
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Book Description
Author: Harry A. Smith
Publisher: Transportation Research Board
ISBN: 9780309053068
Category : Technology & Engineering
Languages : en
Pages : 60
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Book Description
This synthesis will be of interest to construction, maintenance, pavement design, and materials engineers, pavement contractors, and others interested in the use of open-graded friction courses (OGFC) as an asphalt concrete pavement wearing surface. Information is provided on performance benefits and limitations of OGFC, material and mixture properties, and current construction practices in use in the United States and Europe. Advances in mixture design and construction techniques have overcome several of the performance limitations identified in early applications of OGFC, as well as enhanced the performance benefits associated with OGFC use. This report of the Transportation Research Board describes the current state of the practice with respect to the use of OGFC. Experience with the design, construction, and performance of OGFC is summarized, based on a review of the literature, documentation of experience from applications in the U.S. and Europe, and site visits to several states.
Author: Frazier Parker
Publisher:
ISBN:
Category : Cement
Languages : en
Pages : 88
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Book Description
Author: Thomas D. White
Publisher:
ISBN:
Category : Pavements, Bituminous
Languages : en
Pages : 119
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Book Description
A study was conducted on the use of porous friction courses for airport pavements as a means of alleviating aircraft hydroplaning. The study consisted of a laboratory investigation of material requirements and mix design development and of a field study of construction control, construction processes, and long-term performance. The laboratory results were correlated where possible with the field observations. Satisfactory performance was obtained with a recommended aggregate gradation. A procedure for obtaining a design asphalt content and field mixing temperature, minimum field permeability values, and laboratory procedures for conducting permeability tests are described. A standard recommended guide specification is also included as an appendix.
Author:
Publisher:
ISBN:
Category : Concrete
Languages : en
Pages : 88
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Book Description
Author: Carlos Alberto Rivera Torres
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
"Porous asphalt courses (PFC) are mixtures with a high air void content (i.e. 18-20% air void content) that are placed as thin layers over the surface of conventional flexible asphalt pavements, with the purpose of improving environmental aspects and enhancing road safety conditions. A main challenge associated to these mixtures is known as ?raveling? which is the dislodgement of particles from the surface of the structure that reduces their durability. For this reason, polymer modified asphalt (PMA) and asphalt rubber have been used in the fabrication of these mixtures to increase theirs service lives. However, even with the use of these binders PFC mixtures continue presenting short service periods (i.e. usually between 8-12 years). For this reason, polymer highly modified asphalts, also known as HiMA are an alternative to increase the durability of this type of mixtures. The main objectives of this work are to characterize and compare in terms of the asphalt, the mixture and through numerical modeling the durability of PFC mixtures fabricated with HiMA and PMA. The results infer that mixtures with HiMA have an overall better mechanical performance in the long term than mixtures with PMA and, therefore, are expected to present longer disabilities."--Tomado del Formato de Documento de Grado.
