Effect of Aging on Foamed Warm Mix Asphalt Produced by Water Injection
| Autor: | Bijay Subedi, Sunday Akinbowale, Ala R. Abbas, Lana Abu Qtaish, Savas Kaya, Munir D. Nazzal, Mir Shahnewaz Arefin |
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| Rok vydání: | 2016 |
| Předmět: |
Materials science
Aggregate (composite) 0211 other engineering and technologies 020101 civil engineering 02 engineering and technology Building and Construction Viscoelasticity 0201 civil engineering Gel permeation chromatography Asphalt pavement Mechanics of Materials Asphalt 021105 building & construction Dynamic shear rheometer General Materials Science Water injection (engine) Composite material Civil and Structural Engineering |
| Zdroj: | Journal of Materials in Civil Engineering. 28 |
| ISSN: | 1943-5533 0899-1561 |
| DOI: | 10.1061/(asce)mt.1943-5533.0001617 |
| Popis: | This study evaluated the aging characteristics of foamed warm mix asphalt (WMA) produced by water injection in comparison to traditional hot mix asphalt (HMA). Two asphalt binders (PG 70-22 and PG 64-22) and one aggregate (12.5-mm NMAS limestone aggregate) were used in this study. The short-term and long-term aging of the two asphalt binders were simulated using the rolling thin film oven (RTFO) and pressure aging vessel (PAV), respectively, while AASHTO’s standard practice for mixture conditioning for hot mix asphalt was used to simulate the short-term and long-term aging of the laboratory-prepared asphalt mixtures. The dynamic shear rheometer (DSR) was used to characterize the viscoelastic behavior of the original (unaged, RTFO-aged, and PAV-aged) and recovered asphalt binders; Fourier-transform infrared (FTIR) spectroscopy was used to identify and quantify the amount of functional groups present in the asphalt binders; and gel permeation chromatography (GPC) was used to determine the molecular ... |
| Databáze: | OpenAIRE |
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