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COMPARISON OF CARBON BLACK FROM PYROLIZED TIRES TO OTHER FILLERS AS ASPHALT RHEOLOGY MODIFIERS.
| 题名： | COMPARISON OF CARBON BLACK FROM PYROLIZED TIRES TO OTHER FILLERS AS ASPHALT RHEOLOGY MODIFIERS. |
| 作者： | Lesueur-D; Dekker-DL; Planche-J-P |
| 关键词： | SCRAP-TIRES; CARBON-BLACK; ASPHALTIC-MIXTURES; MODIFIERS-; FILLERS-; RHEOLOGY-; POLYMER-ASPHALT |
| 摘要： | In order to dispose of old tires crumb rubber modified asphalts have been introduced. However, the research done on these products shows that they do not necessarily enhance the field applications. Since carbon black can be extracted from old tires, it might be a better way to recycle tires. This study presents carbon black (CB) from pyrolized tires as an asphalt modifier. CB was compared to aggregate fillers and ball clay, and mixed with asphalt to form mastics with similar weight contents (20 to 40%). If the high temperature (above 65 deg C) stiffening effect of the fillers is highly filler dependent, the low temperature rheological behavior is similar for all fillers. At temperatures below 65 deg C, the same rheological model can fit all experimental data points. However, a low temperature toughening effect was only found in the case of mineral fillers. This was attributed to the aggregate/asphalt interface. This interface is too weak in the case of CB and clay to toughen the asphalt at low temperatures and to prevent particle aggregation at high temperatures. As a result CB seems to be a good rheology modifier for binders already having a good low temperature behavior, such as polymer-modified asphalts. |
| 总页数： | Transportation Research Record. 1995. (1515) pp47-55 (9 Fig., 2 Tab., 13 Ref.) |
| 报告类型： | 科技报告 |
相关文献
- EVALUATION OF PYROLIZED CARBON BLACK FROM SCRAP TIRES AS ADDITIVE IN HOT MIX ASPHALT.
- CURRENT AND FUTURE USE OF NONBITUMINOUS COMPONENTS OF BITUMINOUS PAVING MIXTURES.
- RHEOLOGY OF ASPHALTIC BINDERS AND THEIR EFFECTS ON ASPHALT CONCRETE.
- Evaluation of products recovered from scrap tires for use as asphalt modifiers
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- CRITICAL EVALUATION OF ASPHALT MODIFICATION USING STRATEGIC HIGHWAY RESEARCH PROGRAM CONCEPTS.
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