Acoustical Standard for Noise Walls
| 项目名称： | Acoustical Standard for Noise Walls |
| 摘要： | Noise walls are constructed along the highways and roadways to protect adjacent residents from the adverse effect of noise from road traffic. Although most noise walls in United States are made of concrete, other materials are also available and newer materials are being introduced. However, no uniform standard is maintained by the material manufacturers and vendors regarding the acoustical effectiveness of these materials. Additionally, there is no available benchmark to evaluate different materials with respect to the existing concrete noise walls in terms of reducing traffic related noise. In this proposed project, the research team will systematically evaluate available materials for noise walls and their corresponding industry acoustical standards. Different acoustical evaluation methods will be analyzed methodologically considering the factors such as human perception, noise frequency bands. Adequacy of different methods will be determined for the purpose of selecting materials for noise walls. Based on the detailed analysis, thresholds for different noise measurement methods will be determined and benchmarked. The research team will also collect field data for the existing noise walls to determine the acoustical effectiveness of commonly used noise wall materials (such as concrete). To help NCDOT in selecting and approving noise wall materials, the team will develop a guideline which will include a material attribute matrix benchmarked with respect to concrete noise walls. The guideline will also include directions regarding how a new noise wall material needs to be evaluated and tested. |
| 状态： | Active |
| 资金： | 141036 |
| 资助组织： | North Carolina Department of Transportation |
| 项目负责人： | Kirby, John |
| 执行机构： | North Carolina State University, Raleigh |
| 开始时间： | 20190801 |
| 预计完成日期： | 20210731 |
| 主题领域： | Safety and Human Factors |
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