Noise measurements of highway pavements in Texas.

Details

• Creators:
  Trevino, Manuel ; Dossey, Terry
• Corporate Creators:
  Texas Transportation Institute
• Subject/TRT Terms:
  • Noise
  • Friction
  • Friction course
  • Open graded aggregates
  • Sound intensity
  • Noise
  • Noise Mitigation
  • Permeable Friction Course
  • PFC
  • Open Graded Asphalt Pavement
  More +
• Publication/ Report Number:
  FHWA/TX-10/0-5185-3
• Resource Type:
  Tech Report
• Geographical Coverage:
  Texas
• Corporate Publisher:
  Texas Transportation Institute
• Abstract:
  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. The study ; results also suggest a slight degradation of such quietness with time, but even with this small increase in noise ; levels the surfaces can still be considered quieter than other pavement types. Furthermore, the increase in ; loudness is not significant enough to assert that these PFC surfaces cannot retain their acoustic properties over ; time. As per the results obtained in this study, it can be said that open-graded pavements can be reliably used for ; noise impact avoidance and abatement.
  More +
• Format:
  PDF
• Funding:
  0-5185
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/18673/dot_18673_DS1.pdf
• File Type:
  [PDF - 3.88 MB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha256:92c0666f7fffb0950044b04b8a5b4662d12ebfb26383c5de3f51f7b0b52a295a