SYMPOSIA PAPER Published: 01 January 1987
STP18527S

Rheological Properties of Sulfur Asphalt Binders with Fillers Determined by the Sliding Plate Rheometer

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Sulfur continues to be favored as a potential asphalt extender in road paving operations. Over the past decade, developments in the field of sulfur/asphalts (S/A) have proceeded at a rapid pace, leading to products and technologies that are currently at the early commercialization stage. In this study, the properties of selected S/A binders mixed with three commonly used mineral fillers (cement, hydrated lime, and crushed limestone fines) were determined using the sliding plate rheometer. Variables have included loading time, temperature, and S/A weight ratio. The results indicate that sulfur has a much greater influence on measured properties such as viscosity and stiffness than mineral fillers alone. S/A binders, with hydrated lime filler, have exhibited higher viscosity and stiffness than binders prepared with cement or limestone fines. The rheometer data, coupled with photomicrographs, support the notion that the morphology of S/A binders with fillers is very different from that of S/A binders alone in terms of potential voids, sulfur recrystallization, and the size of crystal platelets.

Author Information

Akili, W
University of Petroleum and Minerals, Dhahran, Saudi Arabia
Courval, GJ
ALCAN, Kingston, Ontario, Canada
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Details
Developed by Committee: D04
Pages: 166–178
DOI: 10.1520/STP18527S
ISBN-EB: 978-0-8031-5006-5
ISBN-13: 978-0-8031-0938-4