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- W630746280 abstract "The consumption of natural resources and climatic changes are regarded as key factors in the deterioration and disruption of ecosystems and the asphalt paving industry has been working to address these issues. Two features of the efforts directed towards sustainability have been in the use of warm mix asphalt (WMA) technologies and reclaimed asphalt pavement (RAP). The performance of three commonly used warm mix technologies: Advera, Evotherm J1 and Sasobit were examined in comparison to a control hot mix asphalt (HMA) mixture with respect to dynamic modulus and permanent deformation (flow number). Each mixture was developed using a performance grade 64-22 binder and two types of aggregates: limestone or quartzite. In addition, this study will look into whether WMA additives enable the production of high RAP content (30%) mixtures with comparable performance to HMA. Warm mix asphalt mixtures were prepared at 120°C and compacted at 110°C showed no concerns regarding workability or compactability even in mixtures incorporating 30% RAP. Dynamic modulus and flow number tests were conducted to assess the stiffness and permanent deformation resistance, respectively. The performance tests data suggests that there is a significant difference in the performance of HMA mixtures and the three WMA technologies investigated. Dynamic modulus data of WMA mixtures were consistently lower as compared to HMA. The incorporation of RAP increased the dynamic modulus of all mixtures but the HMA mixtures were still higher than the WMA mixtures. Finally, the rutting resistance of WMA mixtures was considerably lower compared to HMA mixes via flow number testing." @default.
- W630746280 created "2016-06-24" @default.
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- W630746280 date "2012-01-01" @default.
- W630746280 modified "2023-09-23" @default.
- W630746280 title "An Evaluation of Warm Mix Asphalt Additives and Reclaimed Asphalt Pavement on Performance Properties of Asphalt Mixtures" @default.
- W630746280 hasPublicationYear "2012" @default.
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