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Create an Access database and GIS map of highly sensitive noise areas where
the NJDOT Pavement Technologies group could implement their unofficial Quiet
Pavement Policy.
Work Performed
A contract with a private contractor (Illingworth and Rodkin) was put into motion early in
the project. All of the required testing equipment, recommended by Illingworth and
Rodkin was purchased. The lead research engineer for the pavement noise work has
also been trained ont eh general use of the analyzer system. The vehicle fixture was
being manufactured in California and was scheduled to be completed in the middle of
the project period. CAIT worked with the lead research engineer out of the GM Proving
Grounds in Yuma, Arizona for extensive training on pavement noise measurements and
analysis. The training took place over a 1 week period and was conducted with the
equipment purchased by CAIT.
NJDOT provided CAIT with locations of current and past noise concerns, as reported to
NJDOT by local residents. CAIT conducted On-Board Sound Intensity (OBSI) testing
on all of the noted test sections. CAIT has also conducted testing on the previous (I-95)
and recent (I-78) asphalt rubber OGFC mixtures, along with polymer modified OGFC
mixtures on the Garden State Parkway. The PRP delivered an interim report to the
NJDOT of the work performed. (Appendix D)
On Call Testing
Background
The Rutgers Asphalt Pavement Laboratory is a valuable and useful asphalt research
laboratory that could assist the NJDOT with some of their technical needs. The PRP
agreed to provide timely testing as needed by the NJDOT.
Work Performed
CAIT conducted a number of on-call testing for the NJDOT. They include:
I-295 Bottom Rich Base Course (BRBC) – 5 different mixture designs were evaluated (3
from Winslow Asphalt, 1 from American Asphalt, and 1 from Trap Rock Industries).
High Performance Thin Overlay (HPTO) – 5 different mixture designs were evaluated
this quarter (3 from Earle Asphalt and 2 from Trap Rock Industries).
Bridge Deck Wearing Course (BDWC) – 1 mixture design was completed. (Tilcon
provided the mixture from a temporary steel bridge.) A second mixture
A report to the NJDOT pertaining to the performance of the stone mastic asphalt rubber
(SMAR) mixture placed on I-295 was submitted ot the NJDOT. The purpose of the
study was to evaluate the structural integrity of the SMAR. The testing concluded that
the SMAR was structural sound with respect to rutting and cracking potential, but that
high air voids in the material made it susceptible to moisture damage. A think life
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