Pavement characteristics affecting the frequency content of tire/pavement noise
| Autor: | John C. Harvey, Aybike Ongel |
|---|---|
| Rok vydání: | 2010 |
| Předmět: |
Engineering
Acoustics and Ultrasonics business.industry Mechanical Engineering Traffic noise Public Health Environmental and Occupational Health Aerospace Engineering Annoyance Building and Construction Structural engineering Sound intensity Industrial and Manufacturing Engineering Shock (mechanics) Asphalt concrete Noise Automotive Engineering Gradation business Rubberized asphalt |
| Zdroj: | Noise Control Engineering Journal. 58 |
| ISSN: | 0736-2501 |
| DOI: | 10.3397/1.3514588 |
| Popis: | Tire/pavement noise is a major contributor to traffic noise at highway speeds. Annoyance is more closely related to frequency content than to overall A-weighted noise levels, therefore spectral content analysis of tire/pavement noise is an important consideration. A study conducted in California measured the noise levels of different mix types and the pavement characteristics affecting noise levels as determined by on-board sound intensity (AASHTO TP 76-08). Data was collected on dense-graded asphalt concrete mixes (DGAC), conventional open-graded mixes (OGAC), open-graded rubberized asphalt concrete mixes (RAC-O), and gap-graded rubberized asphalt concrete mixes (RAC-G) with ages less than 8 years old. This paper evaluates the effects of pavement characteristics including the air-void content, gradation properties, rubber inclusion, roughness, texture, pavement surface condition, and age on one-third octave band noise levels. This research confirmed that macrotexture and IRI, which are associated with the impact and shock mechanisms, increase the noise levels at lower frequencies. Higher air-void content, associated with the air pumping mechanism, reduces the noise levels at higher frequencies. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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