Effects of Environmental Factors on the Chemical Composition of Asphalt Binders
| Autor: | Ilaria Menapace, Wubulikasimu Yiming, Eyad Masad |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Materials science
Moisture General Chemical Engineering Energy Engineering and Power Technology chemistry.chemical_element Weathering 02 engineering and technology 021001 nanoscience & nanotechnology Nitrogen Oxygen Sulfur Fuel Technology 020401 chemical engineering chemistry X-ray photoelectron spectroscopy Asphalt 0204 chemical engineering Composite material 0210 nano-technology Chemical composition |
| Zdroj: | Energy & Fuels. 33:2614-2624 |
| ISSN: | 1520-5029 0887-0624 |
| DOI: | 10.1021/acs.energyfuels.8b03273 |
| Popis: | This paper provides analysis of the chemical composition of two asphalt binders that were subjected to various environmental factors (i.e., oxygen, heat, ultraviolet radiation, and moisture) in an accelerated weathering tester. The analysis was performed with the aid of Fourier transform infrared and X-ray photoelectron spectroscopy. The results were compared to those obtained for asphalt binder samples that were subjected to the same protocol but in the absence of moisture. The concentrations of oxygen, nitrogen, and sulfur increased with exposure (or aging) time on the surface of the binder samples that were aged without moisture. However, in the presence of moisture, these elements increased initially and then remained constant or decreased as time progressed in the weathering tester. This was attributed to the solubilization and removal of the superficial aged binder by water, which continuously exposed an unaged surface. |
| Databáze: | OpenAIRE |
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