Physical and rheological properties of modified sulfur asphalt binder
| Autor: | A.M.M. Abd El-Rahman, S. A. El-Kholy, Z.L. Abo-Shanab, M. El-Shafie |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Materials science
Softening point Rut 0211 other engineering and technologies chemistry.chemical_element 02 engineering and technology Penetration (firestop) Sulfur Viscoelasticity Cracking 020303 mechanical engineering & transports 0203 mechanical engineering Rheology chemistry Mechanics of Materials Asphalt 021105 building & construction Composite material Civil and Structural Engineering |
| Zdroj: | International Journal of Pavement Research and Technology. |
| ISSN: | 1996-6814 |
| DOI: | 10.1016/j.ijprt.2018.07.005 |
| Popis: | In this study, asphalt binder was partially substituted with different percentages of modified sulfur (20%, 30%, and 40 wt%) to give 20/80, 30/70, and 40/60 sulfur asphalt (S/A) mixtures. The physical properties including softening point, viscosity, penetration, and ductility were examined to characterize the consistency of S/A mixtures. Characterizing the rheological properties of modified asphalt binders is also highly recommended for the prediction of the major pavement damages such as rutting, and cracking. The laboratory studies were conducted to examine the viscoelastic properties of modified sulfur asphalt binder using dynamic mechanical analyzer (DMA), and Brookfield rotational viscometer tests. It was concluded that modified sulfur substituted asphalt mixtures had higher resistance against cracking of the pavement at low temperatures, and least permanent (plastic) deformation at high temperatures. |
| Databáze: | OpenAIRE |
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