Fundamental properties of asphalt rubber blends
Document Type
Conference Proceeding
Publication Date
10-1-1994
Abstract
Blends with up to 20% ground vulcanized rubber (both crumb and 200 mesh powder particles) from recycled tires were prepared with asphalt cements of various grades (AC5 - AC10) and evaluated using dynamic mechanic analysis (DMA). Blends produced from powdered rubber particles exhibited Newtonian behavior at high temperatures, similar behavior was not observed consistently with crumb rubber blends. The mechanical properties of asphalt-rubber mixes depend upon the concentration of rubber additives, the particle dimensions, and the chemical composition of the asphalt. Some asphalts induced excessive swelling of the rubber particles; blends with high temperature viscosities substantially greater than the upper limit of 3 pa sec resulted. The dynamic mechanical characteristics of all blends are discussed in terms of G*sin &delta and G″; comparative data is presented according to the new SHRP binder specifications.
Publication Source (Journal or Book title)
Proceedings of the Materials Engineering Conference
First Page
425
Last Page
431
Recommended Citation
Daly, W., Mohammad, L., Negulescu, I., Paul, H., & Youngblood, J. (1994). Fundamental properties of asphalt rubber blends. Proceedings of the Materials Engineering Conference (804), 425-431. Retrieved from https://repository.lsu.edu/textile_pubs/196