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BINDER CHARACTERIZATION AND EVALUATION BY NUCLEAR MAGNETIC RESONANCE SPECTROSCOPY.
| 题名： | BINDER CHARACTERIZATION AND EVALUATION BY NUCLEAR MAGNETIC RESONANCE SPECTROSCOPY. |
| 作者： | Jennings-PW; Pribanic-JA; Desando-MA; Raub-MF; Moats-R; Smith-JA; Mendes-TM; McGrane-M; Fanconi-B; VanderHart-DL; Manders-WF |
| 关键词： | BINDERS-; NUCLEAR-MAGNETIC-RESONANCE; SPECTROSCOPY-; ASPHALTIC-CEMENTS; ASPHALTS-; STRATEGIC-HIGHWAY-RESEARCH-PROGRAM; EVALUATION- |
| 摘要： | Nuclear magnetic resonance (NMR) spectroscopy was used in solution-state and solid-state experiments on 8 asphalt cements. Using a variety of chemical and solution-state NMR spectroscopic techniques, data were obtained about the amounts of aromatic carbon in an average molecule of asphalt sample, how the carbon is arranged in terms of size of the average aromatic system and the extent of substitution. By using solid-state NMR spectroscopic techniques, the structure of asphaltic cements was probed on a small-distance scale. Difference in molecular mobility were found among the asphalts studied. Changes in molecular mobility after laboratory oxidative aging were found to be small. The implications of these data with regard to the 'micellar model' of asphalt are discussed. The research results' potential impact on understanding asphalt cement properties is explored. |
| 总页数： | 1993/05. pp142 (Figs., Tabs., Refs., 2 App.) |
| 报告类型： | 科技报告 |
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