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Title: FIELD TESTING OF THE EFFECTIVENESS OF OPEN-GRADED ASPHALT PAVEMENT IN REDUCING TIRE NOISE FROM HIGHWAY VEHICLES
Accession Number: 00497409
Record Type: Component
Availability: Find a library where document is available Abstract: Over the last several years, highway pavement rehabilitation projects have incorporated open-graded asphalt, also referred to as "popcorn pavement" for its skid-resistant properties. Subjective observations have noted a decrease in overall noise levels in areas where popcorn pavement has been used. The results are presented of a field testing program conducted in June 1989 along the Baltimore Beltway (I-695) to determine the difference in the overall noise level from typical highway traffic traveling on concrete versus open-graded asphalt pavement. Noise levels were measured simultaneously adjacent to the concrete and asphalt surfaces to determine the difference in noise level, and classified traffic counts were made to determine the effect of truck percentage in the traffic stream on the overall noise reduction attributable to the open-graded pavement. An analysis of the third-octave band frequency spectrum for traffic on the concrete and open-graded asphalt is also presented. The results showed a consistent 2- to 4-dBA reduction in the overall L sub eq that could be attributed to the open-graded pavement. In the higher-frequency bands, 1,000 to 5,000 Hz, the third-octave band analysis showed a significant reduction (2 to 4 dB at 1,000 Hz to 6 to 7 dB at 2,000 to 4,000 Hz). Future studies are planned to expand the baseline data to include other ages and types of concrete and asphalt surfaces, as well as to determine whether aging of the pavement affects its noise reduction capacity.
Supplemental Notes: This paper appears in Transportation Research Record No. 1255, Energy and Environment 1990: Transportation-Induced Noise and Air Pollution. 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 Accession #: 01414362
Authors: Polcak, Kenneth DPagination: p. 94-101
Publication Date: 1990
Serial: ISBN: 030905009X
Features: Figures
(8)
; References
(2)
; Tables
(2)
TRT Terms: Uncontrolled Terms: Subject Areas: Highways; Pavements
Files: TRIS, TRB, ATRI
Created Date: Sep 30 1990 12:00AM
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