United States Department of Transportation
i
Development of an economical, thin, quiet, long-lasting, high friction surface layer, volume 1 : mix design and lab performance testing.
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2013-03-01
[PDF-8.36 MB]
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Abstract:This project developed and evaluated four new asphalt concrete (AC) mixtures that use locally available
aggregates whenever possible with the ultimate goal of a cost-effective mixture that also improves pavement
performance. Although numerous tactics have previously been introduced to improve the performance of
asphalt pavement, these improvements often add expenses because they use unnecessarily large amounts of
high quality aggregates and highly modified binder. The Illinois Department of Transportation initiated a program
to develop sustainable asphalt pavements that use locally available aggregates as much as possible to reduce
the material cost while also improving performance. These new mixtures were developed using the Bailey
method to provide a promising aggregate structure that makes it possible to ensure compactability at thinner
layers. The newly developed mixes use locally available natural aggregates such as dolomite, and including
smaller amounts of imported materials such as quartzite, steel slag, and fibers to improve their performance in
terms of durability, rut resistance, moisture susceptibility, fracture, and complex modulus. To evaluate the
performance of each new mixture, five laboratory tests were conducted at the Advanced Transportation and
Research Engineering Laboratory (ATREL), and the results suggest a preferred mixture.
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