Material Properties of Coal-Tar Emulsion Sealers
Publication: Journal of Materials in Civil Engineering
Volume 19, Issue 4
Abstract
Coal-tar emulsion sealers are used to protect hot-mix asphalt pavements from damage due to the spillage of petroleum-based materials. This paper contains the results of a study, which has field tests and laboratory tests, concerning the effect of various amounts of aggregate, temperature variations, a polymer additive, and aging on the material properties of coal-tar emulsion mixtures. The material properties tests included thermal expansion, creep stiffness test, and by measuring tensile strength, the stress-strain relationships. The study results indicate that the thermal expansion of the mixtures increased with increasing amounts of coal-tar emulsion; however, this effect was slightly reduced with the addition of a polymer additive. Creep stiffness values increased with age and increasing amounts of aggregate in the mixture. The results of the stress-strain evaluation were not consistent. Increased amounts of aggregate, lower temperatures, and decreased amounts of polymer generally resulted in greater stress levels being achieved prior to failure.
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Acknowledgments
The tests described and the resulting data presented herein were obtained from research conducted under the Laboratory Discretionary Research and Development Program of the U.S. Army Corps of Engineers by the U.S. Army Engineer Research and Development Center, Waterways Experiment Station, Vicksburg, Miss. Permission was granted by the Chief of Engineers to publish this information.
References
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Information & Authors
Information
Published In
Journal of Materials in Civil Engineering
Volume 19 • Issue 4 • April 2007
Pages: 305 - 312
Copyright
© 2007 ASCE.
History
Received: May 14, 2003
Accepted: Jan 11, 2006
Published online: Apr 1, 2007
Published in print: Apr 2007
Notes
Note. Associate Editor: Chiara F. Ferraris
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