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Title: EVALUATION OF OPEN-GRADED ASPHALT CONCRETE MIXTURES USED IN OREGON
Accession Number: 00646152
Record Type: Component
Availability: Find a library where document is available Abstract: Oregon began using open-graded hot-mix asphalt concrete mixtures on its roadway system in the late 1970s. Because of the excellent performance of these early jobs, open-graded hot-mix asphalt concrete has become the preferred choice for a surface course on many of Oregon's highways. To assess the performance of the open-graded mix, a survey was made of some of the older projects. A total of 17 projects was selected for evaluation: 11 open-graded and 6 dense-graded. The evaluation involves a comparison of the mix properties and their performance, which includes pavement condition survey, rutting resistance, skid resistance, and noise characteristics. The evaluation shows that all the open-graded projects had improved performance when compared with dense-graded projects. Resistance to cracking is improved, resistance to rutting is slightly increased, and skid gradient is improved. Measured noise levels did not show much difference, although the method of noise measurement may not have been capable of differentiating between the two types of mix. This evaluation supports the continuing use of open-graded mixtures on the Oregon roadway system. In addition, it provided an opportunity to develop new and improved guidelines for the use of these mixes.
Supplemental Notes: This paper appears in Transportation Research Record No. 1427, Pavement Surface Courses, Stone Mastic Asphalt Pavements, and Asphalt Concrete Recycling. 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
Monograph Title: Pavement surface courses, stone mastic asphalt pavements, and asphalt concrete recycling Monograph Accession #: 01403263
Language: English
Authors: Huddleston, I JZhou, HHicks, R GPagination: p. 5-12
Publication Date: 1993
Serial: ISBN: 0309055008
Features: Figures
(6)
; References
(6)
; Tables
(8)
TRT Terms: Uncontrolled Terms: Geographic Terms: Subject Areas: Environment; Highways; Materials; Pavements; I23: Properties of Road Surfaces; I31: Bituminous Binders and Materials
Files: TRIS, TRB, ATRI
Created Date: Apr 22 1994 12:00AM
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