Rheology of polymer reinforced asphalts

Document Type

Conference Proceeding

Publication Date

12-1-1996

Abstract

Blends with polyethylene (PE), chlorinated polyethylene (CPE) or ground vulcanized rubber (both crumb and 200 mesh powder particles) from recycled tires were prepared with asphalt cements of various grades and evaluated using Dynamic Mechanical Analysis (DMA). Blends produced from polyolefins or 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 polymer additives, the particle dimensions, and the chemical composition of the asphalt. The dynamic mechanical characteristics of all blends are discussed in terms of shear modulus (G*) and its components. Constant stress creep and creep recovery of the polymer or rubber asphalt blends proved to be a sensitive measure of the additive content.

Publication Source (Journal or Book title)

Annual Technical Conference - ANTEC, Conference Proceedings

First Page

1175

Last Page

1181

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