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Effects of Asphalt Additives on Pavement Performance; Research rept. 1995.9-1996.8
| 题名： | Effects of Asphalt Additives on Pavement Performance; Research rept. 1995.9-1996.8 |
| 作者： | Buton, J. W.; Hastings, C. P.; Little, D. N. |
| 关键词： | Flexible pavements; Asphalts; Additives; Crack resistance; Rutting resistance; Carbon black; Latex; Polyethylene; Styrene butadiene resins; Field tests; Laboratory tests; Performance evaluation |
| 摘要： | The objective of the study was to evaluate a variety of asphalt additives in the laboratory and in the field to determine their merit in reducing cracking and rutting. In the late 1980s, test pavements were constructed in Texarkana, Sherman, San Benito, and Ft. Worth, Texas. In 1995, cores were obtained from Texarkana and Sherman and evaluated in the laboratory. Asphalt binders, retained during construction and sealed in cans, were tested using the Superpave binder tests and certain chemical tests. Retained binders and aggregates were combined in accordance with the original mixture designs, compacted in the laboratory, and tested using the NCHRP AAMAS test protocols to assess relative resistance to fatigue cracking. The specific objective of the work reported herein was to test the binders and mixtures to determine what properties correlate with the field cracking. A secondary objective was to evaluate the ability of the laboratory tests to identify binders and mixtures susceptible to cracking. Asphalt additives included latex, ethylene vinyl acetate, styrene-butadiene styrene-block (SBS) copolymer, SBS vulcanized with asphalt, manganese organic complex, polyethylene, and carbon black. |
| 总页数： | 132p |
| 报告类型： | 科技报告 |
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