|
|
|
Title: EVALUATION OF BOILING AND STRESS PEDESTAL TESTS FOR ASSESSING STRIPPING POTENTIAL OF ALABAMA ASPHALT CONCRETE MIXTURES
Accession Number: 00472629
Record Type: Component
Availability: Find a library where document is available Abstract: Moisture produces serious distress, reduces performance, and increases the need for maintenance of asphalt concrete pavements. Although moisture is but one of many distress mechanisms contributing to pavement deterioration, it is often a major factor. Moisture damage is attributable to stripping where stripping is the loss of adhesion between aggregate and asphalt cement, or possibly loss of cohesion in the asphalt cement. Boiling tests and stress pedestal tests were performed on asphalt concrete mixes composed of materials common in Alabama. The purposes of these tests were to evaluate the laboratory procedures for (a) assessing the potential of asphalt concrete mixture stripping and effectiveness of antistripping additives and for (b) identifying mix components responsible for stripping. Results from the boil tests indicated that aggregate, asphalt cement, and additive properties affect coating retention. Implications are that each combination must be tested to assess stripping potential and that generalizations are not possible. Reasonable correlations with field performance were obtained with results from entire mixes. Results indicate that boil tests may provide valuable predictions of antistripping agent effectiveness, but that they will not identify aggregate components causing stripping. Results from the stress pedestal tests did not correlate well with field performance. In addition, there were no correlations between mix performance and the performance of individual aggregate components. Implications are that the stress pedestal test has little potential for predicting mix performance or for identifying aggregate components causing stripping for typical Alabama materials.
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 #: 01418832
Authors: Parker Jr, FrazierWilson, Michael SPagination: pp 90-100
Publication Date: 1986
Serial: Conference:
65th Annual Meeting of the Transportation Research Board
Location:
Washington District of Columbia, United States ISBN: 309041163
Media Type: Print
Features: Figures
(8)
; References
(9)
; Tables
(7)
TRT Terms: Uncontrolled Terms: Geographic Terms: Old TRIS Terms: Subject Areas: Geotechnology; Highways; Materials; I31: Bituminous Binders and Materials
Files: TRIS, TRB
Created Date: Aug 31 1987 12:00AM
More Articles from this Serial Issue:
|
