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QUANTITATIVE DETERMINATION OF POLYMERS IN ASPHALT CEMENTS AND HOT-MIX ASPHALT MIXES.
| 题名： | QUANTITATIVE DETERMINATION OF POLYMERS IN ASPHALT CEMENTS AND HOT-MIX ASPHALT MIXES. |
| 作者： | Curtis-CW; Hanson-DI; Chen-ST; Shieh-G-J; Ling-M |
| 关键词： | QUANTITATIVE-ANALYSIS; POLYMERS-; ASPHALT-CEMENTS; HOT-MIX-ASPHALT; FOURIER-TRANSFORM-INFRARED-SPECTROSCOPY; LATEX-ASPHALT; POLYMER-ASPHALT; GRAVELS-; GRANITES-; LIMESTONES- |
| 摘要： | The addition of polymers in asphalt cement has been widespread. Quantitative analysis of these polymers is essential to verify if specifications are being met. The analysis of two styrene butadiene rubber (SBR) latexes and ethylene vinyl acetate (EVA) and styrene butadiene styrene (SBS) polymers in three different asphalts was accomplished by Fourier transform infrared (FTIR) spectroscopy. Although the behavior of each SBR latex in each asphalt yielded somewhat different calibration curves, each latex-modified asphalt cement was successfully quantified. The values for latex determined by FTIR spectroscopy yielded a more linear relationship between the dynamic shear measurements and the latex concentration than the nominal values that accompanied the mixtures. Both EVA and SBS polymers were also quantified by using the analysis that was developed for the SBR latex-modified asphalt. The infrared analysis of SBR latex in asphalt was directly applied to the analysis of SBR latex in asphalt-aggregate mixes. Analysis of 3 weight percent SBR latex in asphalt concrete samples was achieved by removing the SBR latex-modified asphalt from aggregates and analyzing the latex content by FTIR spectroscopy. Three different aggregate types, gravel, granite, and limestone, were used. |
| 总页数： | Transportation Research Record. 1995. (1488) pp52-61 (6 Fig., 3 Tab., 13 Ref.) |
| 报告类型： | 科技报告 |
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