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Title: APPLICATION OF KNOWLEDGE OF PAVEMENT SURFACE PROPERTIES IN JAPAN
Accession Number: 00173548
Record Type: Component
Availability: Find a library where document is available Abstract: Proposed recommendations of friction coefficients for new pavements are 0.35 at 80 km/h for expressways and 0.40 for 60 km/h for national roads. Skid-resistant mixtures for wearing courses are either open-graded asphalt concrete or gap-graded dense asphalt for general districts, and gap-graded dense asphalt concrete with high filler content for snowy districts. Anti-skidding requirements demand that a new road should have a polished stone value (PSV) of more than 60. Recommendations for skid-resistance standards are presented, and comments are made on standard asphaltic concrete for skid-resistant pavements, the skid-resistance and stripping phenomena of open-graded asphalt concrete and the properties of gap-graded dense asphaltic concrete. Figures illustrate the typical structure of asphalt pavement for general national highways, the skid resistance on various surface mixtures, abrasion resistance between continuous and gap grading, and abrasion loss on experimental pavement during winter. Tables are presented for standard gradation values of asphalt concrete for skid-resistant pavements, the coefficient of skid-resistance and its percent decrease with speed increase on various surface mixtures, permeability on open-graded asphalt concrete, and pavement stripping due to permeated water.
Supplemental Notes: This article appeared in the Transportation Research Circular Number 192, Summary: Second International Skid Prevention Conference. Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved.
Corporate Authors: Transportation Research Board 500 Fifth Street, NW Authors: Ichihara, KPagination: p. 21-27
Publication Date: 1978-2
Serial: Media Type: Digital/other
Features: Figures
(4)
; Tables
(5)
TRT Terms: Subject Areas: Highways; Maintenance and Preservation; Pavements; Safety and Human Factors
Files: TRIS, TRB
Created Date: May 18 1978 12:00AM
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