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Accession Number PB2013-101740
Title Evaluation of the Performance of Warm Mix Asphalt in Washington State.
Publication Date Oct 2012
Media Count 106p
Personal Author H. Wen J. DeVol J. Weston K. Willoughby N. Bower
Abstract Warm mix asphalt (WMA) is a relatively new and emerging technology for the asphalt industry. It offers potential construction and environmental advantages over traditional hot mix asphalt (HMA). However, WMA must perform at least as well as HMA before it can be used to replace HMA. This study evaluates the performance of HMA and WMA mixes obtained from various field sites in the state of Washington. Different WMA technologies are examined in four separate projects; these technologies include Sasobit(TradeName) and three water foaming technologies, Gencor(TradeName) Green Machine Ultrafoam GX(TradeName), Aquablack(TradeName) and water injection. Performance tests are conducted on the cores and extracted binders to evaluate the resistance of HMA and WMA samples to fatigue and thermal cracking, rutting and moisture susceptibility. Additionally, the early-age field performance of WMA and HMA control pavements is compared.
Keywords Asphalt concretes
Highway construction
Hot mix paving mixtures
Performance evaluation
Thermal cracking
Warm mix asphalt (WMA)
Washington (State)
Water injection

Source Agency Federal Highway Administration
NTIS Subject Category 50C - nonstruction Equipment, Materials, & Supplies
50A - Highway Engineering
Corporate Author Washington State Univ., Pullman. Dept. of Civil and Environmental Engineering.
Document Type Technical report
Title Note Final rept.
NTIS Issue Number 1303
Contract Number T4120-21

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