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原文传递 Noise Measurements of Highway Pavements in Texas

题名：	Noise Measurements of Highway Pavements in Texas
作者：	Trevino, M.; Dossey, T.
关键词：	Noise##Asphalt pavements##Texas##Traffic noise##Tire noise##Mitigation##Noise pollution control##Noise reduction##Pavement surface texture##Roads and highways##Field measurements##Testing##
摘要：	This report presents the results of noise testing performed on Texas pavements between May of 2006 and the summer of 2008. Two field test methodologies were used: roadside noise measurement with SPL meters and onvehicle sound intensity measurement of noise at the tire/pavement interface. Additionally, pavement samples were tested in an impedance tube. Comparisons are made between the levels of vehicular noise at the roadside and directly on the source vehicle. The FHWA Traffic Noise Model (TNM) computer program was used to predict the noise levels at roadside based on the observed traffic and geometry of the roadway, and subsequently compared to the noise as actually measured with precision test equipment. An important part of the study focused on testing pavements corresponding to the New Generation Open Graded Friction Course type, a permeable asphalt design with air voids in the area of 17 percent, also known as Permeable Friction Course (PFC) in Texas. Findings indicate that roadside noise levels experienced along PFC pavements are significantly lower than predicted by TNM using either the 'Average' or 'Open Graded' pavement models included in the program. Measurements at the tire/pavement interface confirm the quieter characteristics of these surfaces.
总页数：	164
报告类型：	科技报告