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- W620445053 abstract "Selection of pavement for noise reduction considerations is becoming a major concern for those involved in highway construction within densely populated areas. However, the pavements available are designed for durability and safety reasons and not for their acoustic characteristics. The purpose of this study is to develop a pavement design criterion for improved acoustical performance. Existing porous media theory can be used to predict the absorption characteristics of asphalt pavements. Experiments and theoretical analysis were performed on test pavement samples to determine the acoustical characteristics of different pavement mixes where aggregate size, pavement layer thickness, percent of air voids, mix of aggregates and amount of screenings were varied. Tests were conducted on both single and multiple-layer pavement laboratory samples. Good agreement was found between the predicted and measured values of absorption. It is shown that by varying the thickness of the pavement layers the peak value of absorption can be matched to achieve maximum noise reduction at the frequencies where traffic noise is most prominent." @default.
- W620445053 created "2016-06-24" @default.
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- W620445053 date "1999-09-01" @default.
- W620445053 modified "2023-09-26" @default.
- W620445053 title "IMPROVING THE ACOUSTICAL PERFORMANCE OF POROUS ASPHALT PAVEMENTS" @default.
- W620445053 hasPublicationYear "1999" @default.
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