United States Department of Transportation
i
Use of High Friction Surface for Highway Noise Reduction
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2018-05-01
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[PDF-5.60 MB]
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TRIS Online Accession Number:01670913
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Edition:Final Report January 2016–December 2016
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Abstract:With noise issues arising frequently in urban areas due to heavy traffic, it might be possible to use High Friction Surfaces (HFS) to reduce the sound to an acceptable level without a barrier wall or in conjunction with one. This research project determines the influence of HFS on traffic noise levels. The purpose of this project is to extend on previous research by including more evaluation on HFS Polymer Overlays. Research of several standardized methods of testing led to the selection of Statistical Pass-By Method (SPB) as the best method of measuring highway noise levels. While SPB calls for testing of a specific amount of random car pass-bys in order to draw a sound level conclusion, the team utilized a modified SPB testing method using one specific car for all test passes, creating a more controlled testing environment due to the wide variety of vehicle types traveling on the highways. The Kansas State Senior Design Team decided upon a test strip of 300 ft in order to accurately evaluate the HFS. The Kansas Department of Transportation (KDOT) in Wamego, KS, placed an HFS test strip of 300 ft on US Highway 24. The Kansas State Senior Design Team purchased the resin for the test strip from Transpo Industries, and Flint Rock donated the aggregate. KDOT and Performance Contracting Inc. (PCI) completed the test strip on June 22, 2016. To perform simple and accurate testing, the Senior Design Team created a detailed testing setup and procedure for the testing. Using the testing procedure and a SoundTrack LxT, the team performed four different tests (three modified SPB and a final normal SPB test). The data collected from these tests resulted in an average sound change less than the 5-dB amount considered noticeable to the human ear. As a result, this report concludes that HFS is not an effective stand-alone alternative to sound barrier walls but could be used in conjunction with other actions to reach an acceptable level of noise reduction in urban areas.
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