Utilization of waste tires in asphaltic materials. Final report
The research project was divided into two sections: laboratory phase and field phase. In the laboratory phase the use of crumb rubber utilizing the `wet` method was investigated. A total of 360 laboratory-prepared Marshall specimens were made and tested. The materials used to prepare the specimens were typical of those used for Type 1A Surve mixtures used by SC DOT. The experimental design consisted of using three aggregate sources, three antistrip additives, and four rubber percentages (i.e., 0%, 12%, 15%, and 18% by weight of asphalt cement). The indirect tensile strengths, tensile strength ratio, visual strip rating, percent air voids, and bulk specific gravities were determined and statistically analyzed. The results indicated that, in general, as the rubber percentage increased, the strength decreased. However, the specimens containing antistrip additives had a higher increase in strength compared to that of the virgin materials. In addition, the optimum asphalt content generally increased as the rubber percentage increased.
- Research Organization:
- Clemson Univ., SC (United States). Dept. of Civil Engineering
- OSTI ID:
- 385304
- Report Number(s):
- PB-96-203062/XAB; CNN: Contract SPR-554; TRN: 62752193
- Resource Relation:
- Other Information: PBD: Jun 1996
- Country of Publication:
- United States
- Language:
- English
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