Details:

Creators:
Trevino, Manuel ; Dossey, Terry
Trevino, Manuel ; Dossey, Terry Less -
Corporate Creators:
Texas Transportation Institute
Subject/TRT Terms:
[+]
Friction Friction Course Noise Noise Mitigation OBSI Open Graded Aggregates Open Graded Asphalt Pavement Pass-By Permeable Friction Course PFC Quiet Pavement Sound Intensity TNM
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.


Format:
PDF
Funding:
0-5185
Collection(s):
US Transportation Collection
Main Document Checksum:
[+]
urn:sha256:92c0666f7fffb0950044b04b8a5b4662d12ebfb26383c5de3f51f7b0b52a295a
Download URL:
https://rosap.ntl.bts.gov/view/dot/18673/dot_18673_DS1.pdf
File Type:

Supporting Files

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