United States Department of Transportation
i
Performance of polymer modified hot mix asphalt pavements : an extended evaluation.
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2004-03-01
[PDF-185.73 KB]
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Edition:Final report.
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Abstract:In the summer of 1996, the Mississippi Department of Transportation (MDOT) initiated a field trial (MDOT
State Study No. 111) and a laboratory study (MDOT State Study No. 123) to evaluate the use of polymer
modified asphalts in hot mix asphalt pavements. In the field trial, nine experimental sections were compared.
Eight of the sections contain different polymer modification, including four styrene-butadiene copolymers,
one polyethylene, two crumb rubbers, and a gelled asphalt. A ninth section containing no modifiers serves as
the control section for the experiment. This experiment was constructed on a section of Interstate 55
Northbound near Grenada, Ms. that is subjected to approximately one million Equivalent Single Axle
Loadings (ESALs) per year. Each section is one half mile in length and is separated from the next section by
a one half mile long non-modified section.
Contained within this report is the summary of activities related to MS State Study No. 141, which examines
the long-term performance of the nine sections. As part of State Study No. 141, an effort has been made to
characterize the performance of each of the sections by utilizing MDOT’s Pavement Condition Rating (PCR)
which was developed in conjunction with MDOT’s Pavement Management System.
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