00348695

Component

http://onlinepubs.trb.org...s/trr/1981/821/821-001.pdf

https://scholar.google.co...ters&publication_year=1981

There has been a growing emphasis, particularly in the past seven to eight years, on the placement of what have become known as open-graded asphaltic concrete friction courses (ACFCs). Such placement is as a final, or wearing, course for asphaltic concrete pavements and is used not only for highways but for airport runways as well. It was replaced in July 1976 that 47 states have now tried some type of open-graded mix and that 20 or 25 states are continuing this type of surfacing on a regular basis. The following performance aspects of proper ACFC design, construction, and maintenance, based on observations made over the past 25 years, are discussed: (a) Although the film coatings on particles in an open-graded ACFC are larger than those in dense-graded designs, a planned maintenance program that requires a fog seal of rejuvenators and/or combined asphalt rejuvenators every two of three years is essential (service life is affected by the lack of such a program); (b) an open-graded ACFC has the ability to hide surface reflective cracking, and it also provides space for subsequent fog seals of rejuvenating agents to retard cracking; (c) since an open-graded ACFC is sensitive to bitumen quantity, temperatures, and hauling distances, consideration should be given to control of the construction season; (d) adequate sealing of the existing pavement surface prior to placement of an open-graded ACFC is essential; and (e) under high traffic volumes and speeds, an open-graded ACFC facilitates the handling of traffic during construction and reduces the splashing effects of surface water. (Authors)

Publication of this paper sponsored by Committee on Characteristics of Bituminous-Aggregate Combinations to Meet Structural Requirements. 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

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pp 1-4

1981

Transportation Research Record

60th Annual Meeting of the Transportation Research Board

0309032638

Print

Figures (3) ; Photos (1) ; References (7)

Airport runways; Asphalt concrete; Coatings; Friction course; Friction materials; Open graded aggregates; Particles; Pavement performance; Paving; Sealing (Technology); Seasons; Splashing; Temperature; Traffic volume; Work zone traffic control

Arizona

Arizona

Highways; Materials; Pavements; I23: Properties of Road Surfaces

TRIS, TRB

Jun 30 1982 12:00AM

• ANALYSIS AND REPAIR OF WATER-DAMAGED BITUMINOUS PAVEMENT
• ASPHALT MIXTURES: COMPARATIVE ANALYSIS OF CHARACTERIZATION FOR DESIGN
• BEHAVIOR AND REPAIR OF DETERIORATED REINFORCED CONCRETE BEAMS
• CHARACTERISTICS AND PERFORMANCE OF ASPHALT-RUBBER MATERIAL CONTAINING A BLEND OF RECLAIM AND CRUMB RUBBER
• DESIGN FOR MINIMIZING DETRIMENTAL VIBRATIONS FROM CONSTRUCTION BLASTS
• DEVELOPMENT OF A CONSTRUCTION PRICE INDEX FOR MAJOR PUBLIC TRANSIT INVESTMENT PLANNING
• DEVELOPMENT OF AN IMPROVED AUTOMATED NUCLEAR BACKSCATTER GAGE
• EFFECT OF AGGREGATE TOP SIZE ON ASPHALT EMULSION MIXTURE PROPERTIES
• MAGNITUDE OF HORIZONTAL MOVEMENT IN JOINTED CONCRETE PAVEMENTS
• MODIFICATION OF PAVING ASPHALTS BY DIGESTION WITH SCRAP RUBBER
• NONDESTRUCTIVE MONITORING OF CHLORIDE IN BRIDGE DECKS WITH A MOBILE NEUTRON-GAMMA SPECTROMETER
• OVERVIEW OF PAY-ADJUSTMENT FACTORS FOR ASPHALT CONCRETE MIXTURES
• PERFORMANCE COMPARISON BETWEEN A CONVENTIONAL OVERLAY AND A HEATER-SCARIFICATION OVERLAY
• RATIONAL APPROACH TO DESIGN OF BITUMINOUS STOCKPILE PATCHING MIXTURES
• REPAIR OF TORSIONALLY INADEQUATE CONCRETE BEAMS BY USE OF ADHESIVELY BONDED PLATES (ABRIDGMENT)
• TEXTURING OF CEMENT CONCRETE PAVEMENTS BY CHIP SPRINKLING THE FRESH CONCRETE