WIT Press


Evaluation Of Polymer Modified Asphalts Containing Warm Mix Additives In Rheology

Price

Free (open access)

Paper DOI

10.2495/UT090421

Volume

107

Pages

8

Page Range

471 - 478

Published

2009

Size

310 kb

Author(s)

H.-S. Kim, S.-J. Lee, S. N. Amirkhanian & T.-S. Park

Abstract

Polymer modified asphalt (PMA) binders can be utilized using warm mix asphalt (WMA) technologies in order to aim for the green highway construction by lowering construction temperatures and toxic by-products (i.e., CO2, smoke, and odor). This paper focused on a rheological investigation of three PMA binders, graded as PG 76-22, containing two warm additives (Aspha-min® and Sasobit®) available commercially. The main rheological factors selected in this study were relationships between loading and response as a function of time, temperature and frequency using a Bohlin Dynamic Shear Rheometer II. The results suggested that the two warm additives positively influenced the performance of PMA binders. In particular, the use of Sasobit® showed the enhanced rutting resistance properties at high pavement temperature and more elastic properties at lower temperatures. Keywords: PMA binders, WMA, rheology.

Keywords

PMA binders, WMA, rheology