The effect of long-term oxidation on the rheological properties of polymer modified asphalts☆ | Health & Environmental Research Online (HERO)

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HERO ID

5692409

Reference Type

Journal Article

Title

The effect of long-term oxidation on the rheological properties of polymer modified asphalts☆

Author(s)

Ruan, Y; Davison, RR; Glover, CJ

Year

2003

Is Peer Reviewed?

Journal

Fuel
ISSN: 0016-2361
EISSN: 1873-7153

Volume

Issue

Page Numbers

1763-1773

Language

English

DOI

10.1016/S0016-2361(03)00144-3

Web of Science Id

WOS:000184668800007

URL

http://www.sciencedirect.com/science/article/pii/S0016236103001443
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Abstract

The effect of long-term aging on rheological properties of polymer modified asphalt binders was studied. Modifiers included diblock poly(styrene-b-butadiene) rubber, triblock poly(styrene-b-butadiene-b-styrene), and tire rubber. Asphalt aging was carried out either at 60 °C in a controlled environmental room or at 100 °C in a pressure aging vessel [AASHTO Provisional Standards, 1993]. Both dynamic shear properties and extensional properties were investigated. Polymer modification resulted in increased asphalt complex modulus at high temperatures, decreased asphalt complex modulus at low temperatures, broadened relaxation spectra, and improved ductility. Oxidative aging decreased asphalt temperature susceptibility, damaged the polymer network in binders, further broadened the relaxation spectrum, and diminished polymer effectiveness in improving asphalt ductility.

Keywords

Long-term oxidation; Rheological properties; Polymer modified asphalts