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http://dx.doi.org/10.7855/IJHE.2014.16.4.063

Performance Evaluation of RAP and WMA Mixtures Located in MN/Road Test Cells through Air Voids Analyses  

Moon, Ki Hoon (Samsung Construction and Trading Corporation)
Falchetto, Augusto Cannone (Technical University of Braunschweig, Department of Architecture, Civil Engineering and Environmental Sciences - Pavement Engineering Centre (ISBS))
Jeong, Jin Hoon (Department of Civil Engineering, Inha University)
Publication Information
International Journal of Highway Engineering / v.16, no.4, 2014 , pp. 63-74 More about this Journal
Abstract
PURPOSES: This research is to evaluate the mechanical performance of different types of Hot Mix Asphalt (HMA) pavement cells prepared for MN/Road field testing section through an extensive experimental analysis of air voids and simple statistical evaluation tools (i.e. hypothesis test). METHODS: An extensive experimental work was performed to measure air voids in 82 asphalt mixture cores (238 samples in total) obtained from nine different types of road cell located in MN/Road testing field. In order to numerically and quantitatively address the differences in air voids among the different test Cells built in MN/Road, a simple statistical test method (i.e. t-test) with 5% significance was used. RESULTS: Similar trends in air voids content were found among the mixtures including conventional HMA, Reclaimed Asphalt Pavement (RAP) and Warm Mix Asphalt (WMA) combined with taconite aggregate this provides support to the use of RAP and WMA technology in the constructions of asphalt pavement. However, in case of acid modified HMA mixtures, significant differences in air void content were observed between on the wheel path and between wheel path location, which implies negative performances in rutting and thermal cracking resistances. Conclusions : It can be concluded that use of RAP and WMA technology in the construction of conventional asphalt pavement and the use of PPA (Poly Phosphoric Acid) in combinations with SBS (Styrene Butadiene Styrene) in asphalt binder production provide satisfactory performance and, therefore, are highly recommended.
Keywords
air voids; MN/Road testing cell; hot mix asphalt (HMA); reclaimed asphalt pavement (RAP); warm mix asphalt (WMA); taconite aggregate; rutting;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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