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Title: EVALUATION OF VISCOSITY-GRADED ASPHALT CEMENTS IN UTAH
Accession Number: 00148652
Record Type: Component
Availability: Find a library where document is available Abstract: The methods commonly used to grade asphalts (penetration, viscosity, and ductility) were investigated to determine their effectiveness as indicators of performance. Although these parameters were found to be of value in establishing asphalt quality and in controlling mix and lay-down properties, new methods are needed to better predict asphalt performance. A new procedure called force ductility has been correlated to performance. This modification in the standard ductility test measures the force in the asphalt sample versus elongation and is based on the theory that an asphalt must be able to relax as strain from traffic loading and temperature shrinkage is applied to a pavement. Asphalts with lower forces performed best in the field. Other tests found to be indicative of performance were temperature susceptibility, shear susceptibility, ductility versus temperature, and chemical fractionation.
Supplemental Notes: Publication of this paper sponsored by Committee on Characteristics of Bituminous Materials. Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved.
Monograph Title: Monograph Accession #: 01411128
Authors: Anderson, Douglas IPeterson, Dale EWiley, MaxPagination: pp 9-17
Publication Date: 1976
Serial: ISBN: 0309025648
Media Type: Print
Features: Figures
(13)
; References
(15)
; Tables
(3)
TRT Terms: Uncontrolled Terms: Geographic Terms: Old TRIS Terms: Subject Areas: Highways; Materials
Files: TRIS, TRB
Created Date: Mar 30 1977 12:00AM
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