Characterization of asphalt cements modified with crumbed rubber from discarded tires. Final report
The potential legislative requirement for incorporation of scrap rubber into asphalt blends mandated a thorough evaluation of the influence of scrap rubber additives on the physical properties and aging characteristics of rubber/asphalt blends. Blends with up to 20 percent ground vulcanized rubber (both crumb and 200 mesh powder particles) from recycled tires were prepared with asphalt cements of various grades (AC5 - AC30) and evaluated using DMA. Blends produced from powdered rubber particles exhibited Newtonian behavior at high temperatures; similar behavior was not observed with crumb rubber blends. The mechanical properties of asphalt-rubber blends depend upon the concentration of rubber additives, the particle dimensions, and the chemical composition of the asphalt.
- Research Organization:
- Louisiana Transportation Research Center, Baton Rouge, LA (United States)
- OSTI ID:
- 239067
- Report Number(s):
- PB--96-162706/XAB
- Country of Publication:
- United States
- Language:
- English
Similar Records
Effects of carboxylic acids on the rheological properties of crumb rubber modified asphalt
State of the practice: Design and construction of asphalt paving materials with crumb-rubber modifier. Final report