Determination of the Binder Content of Fine Aggregate Matrices Prepared with Modified Binders
Publication: Journal of Materials in Civil Engineering
Volume 30, Issue 4
Abstract
The first purpose of this paper was to check the applicability of some design methods of fine aggregate matrices (FAM) to modified asphalt binders. Because of shortcomings observed during the replication of those methods, a second objective was outlined: to develop a simpler, less experimental procedure applicable to modified asphalt binders. In the proposed procedure, the binder content of the FAM produced with the neat binder (reference binder content) was determined by means of the concept of specific surface. The binder contents for the FAMs produced with the modified asphalt binders were obtained by multiplying the reference binder content by a ratio that is calculated by dividing the binder content obtained in the design of the hot-mix asphalt (HMA) mixture produced with each modified asphalt binder by the binder content of the HMA mixture produced with the conventional asphalt binder. The ignition method and the method based on the specific surface yielded equivalent reference binder contents. The proposed procedure proved to be efficient and independent of the modified binder used.
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Acknowledgments
The first author acknowledges the Brazilian National Research Council (CNPq) for supplying her Ph.D. scholarship. The last author thanks the Sao Paulo State Research Funding Agency (FAPESP process No. 2006/55835-6) for financial support.
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Information & Authors
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Published In
Journal of Materials in Civil Engineering
Volume 30 • Issue 4 • April 2018
Copyright
©2018 American Society of Civil Engineers.
History
Received: Apr 7, 2017
Accepted: Aug 15, 2017
Published online: Jan 31, 2018
Published in print: Apr 1, 2018
Discussion open until: Jun 30, 2018
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