Reformulation of Asphalt Cements for Paving
Publication: Journal of Transportation Engineering
Volume 128, Issue 2
Abstract
This paper summarizes research on the behavior of reformulated asphalt cements (AC) produced by different blending combinations of propane precipitated asphalt (PPA) and other petroleum-based components—soft asphalt residues and furfural heavy oils. The asphalt cements were tested fresh and under variable aging conditions. The fresh reformulated AC blends were also used to compose local typical bituminous paving mixtures with two types of aggregate—dolomite and basalt. The mixtures were tested to inspect conformation under the local standard Marshall criteria, and also for long-term moisture damage resistance. The major conclusion of this research is that high-quality and durable ACs can be produced by reformulation through blending of specific petroleum components involving PPA. These reformulated ACs cements were found to comply with all standard specifications and in many cases to exhibit superior aging resistance as compared to conventional straight-run ACs. Bituminous mixtures composed of reformulated ACs also fully complied with local specifications. When calcareous aggregates were involved, these mixtures also exhibited high durability, as expressed by their resistance to moisture damage.
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References
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Information & Authors
Information
Published In
Journal of Transportation Engineering
Volume 128 • Issue 2 • March 2002
Pages: 111 - 122
Copyright
Copyright © 2002 American Society of Civil Engineers.
History
Received: Jan 7, 2000
Accepted: Oct 30, 2001
Published online: Mar 1, 2002
Published in print: Mar 2002
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