Tire noise assessment of Asphalt Rubber Crumb pavement
Keywords:Asphalt, Asphalt pavements, Cements, Project management, Roads and streets, Rubber, Statistical methods, Vehicles, Asphalt rubber crumb (ARC), Noise monitoring, Traffic volumes, Vehicle testing
AbstractDue to ever-increasing traffic volumes, various mitigating techniques are commonly employed to reduce tire noise. One such method is the use of Asphalt Rubber Crumb (ARC) pavement as a surface coat for conventional asphalt. Crushed rubber tires are heated to a gel-state and mixed in with the conventional asphalt, resulting in a more porous and less stiff surface material. Measurements were conducted at a pilot paving location where sections of old conventional pavement were repaved with new ARC and new conventional pavement. These locations enabled direct comparison between the two paving materials. Measurements conducted included: long term environmental noise monitoring, short term specific vehicle observed sound levels, specific controlled vehicle drive-by tests and subjective observations. The paper outlines the measurement methods and the results obtained.
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