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Quantifying Antistrip Additives in Asphalt (Binder & Mixes).
| 题名： | Quantifying Antistrip Additives in Asphalt (Binder & Mixes). |
| 作者： | tayebali, a. a. knappe, d. chen, c. |
| 关键词： | asphalt binder,asphalt mixes,antistrip additives/litmus tests, colorimetric tests/ |
| 摘要： | In this study, litmus and colorimetric tests were developed to quantify the contents of amine-based antistrip additives in asphalt binders and mixes. In addition, the effect of prolonged heating on antistrip additive content was evaluated for both asphalt binders and mixes. Results of this study indicate that both litmus and colorimetric tests are capable of detecting and quantifying amine-based antistrip additives in asphalt binders and mixes. Also, both test methods were able to validate the antistrip additive contents in field samples with known additive contents. When subjected to prolonged heating periods, the antistrip additive content decreased substantially for both asphalt binders and mixes. For asphalt binders, no antistrip additive content was detectable after 24 to 48 hours of extended heating; for mixes, the measured antistrip additive content approached zero percent after 6 to 12 hours of extended heating. / NOTE: Final rept. (July 2003 - June 2005). / Supplementary Notes: Sponsored by North Carolina Dept. of Transportation, Raleigh. and Federal Highway Administration, Raleigh, NC. North Carolina Div. / Availability Note: Order this product from NTIS by: phone at 1-800-553-NTIS (U.S. customers); (703)605-6000 (other countries); fax at (703)605-6900; and email at orders@ntis.gov. NTIS is located at 5285 Port Royal Road, Springfield, VA, 22161, USA. |
| 报告类型： | 科技报告 |
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