Warm mix asphalt : final report.
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2014-11-01
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Abstract:The performance of pavements constructed using warm mix asphalt (WMA) technology were
compared to the performance of conventional hot mix asphalt (HMA) pavements placed on the
same project. Measurements of friction resistance, rutting/wear, ride and pavement condition
(alligator, longitudinal and transverse cracking) did not show that the WMA either improved or
worsened performance. WMA is an allowable substitute for conventional HMA on all projects
using less than 20 percent recycled asphalt pavement (RAP). WMA is not allowed when the RAP
content exceeds 20 percent or when any percentage of recycled asphalt shingles (RAS) is
incorporated.
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