Asphalt content determination by the ignition method
Title:
Asphalt content determination by the ignition method
Author:
Brown, Elton R.
Personal Author:
Publication Information:
Montgomery : Alabama Dept. of Transportation, Bureau of Research and Development, [1994]
Physical Description:
xiv, 218 p. : ill. ; 28 cm.
Series:
HPR report ; 110B
Alabama highway research ; HPR rept. no. 110.
General Note:
"July 1994"--Cover.
Contents:
Introduction -- Literature review -- Development of test procedure -- Laboratory testing -- Field testing -- Conclusions and recommendations -- References -- Appendices.
Abstract:
This paper describes the development and testing for the ignition method for determining asphalt content and aggregate gradation of asphalt-aggregate mixtures. The ignition method utilizes the mass of hot-mixed asphalt mixture before and after removal of asphalt cement by burning at 593 deg C (1100 deg F) to measure asphalt content. The recovered aggregate from ignition testing may also be used for gradation analysis. The test procedure is safer and simpler than current methods of asphalt content and gradation determination. The ignition method was evaluated in both the laboratory and field. In the laboratory, ignition testing was performed on 80 samples of hot-mixed asphalt. The ignition method proved to be precise and accurate in determining both asphalt content and aggregate gradation.
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