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Title: Factors That Affect Cracking Performance in Hot-Mix Asphalt Mix Design
Accession Number: 01356809
Record Type: Component
Record URL: Availability: Transportation Research Board Business Office 500 Fifth Street, NW Find a library where document is available Abstract: It is well known that cracking resistance of hot-mix asphalt (HMA) mixtures is influenced by many factors, such as the asphalt binder type, binder content, aggregate gradation, aggregate type, and volumetric parameters of mixtures. The Texas Transportation Institute’s overlay tester (OT) was used to evaluate cracking performance in terms of number of cycles to failure (N sub OT), and an experimental design was undertaken to cover the many combinations of aggregates, gradations, and asphalt binders. Through extensive laboratory tests and statistical analyses, the most significant factors that affected cracking performance were identified. Corresponding N sub OT prediction models were developed with high R² values (approximately .9). With these models, the minimum asphalt content for different HMA mixtures was estimated, and the lower limits of asphalt content during mix design were recommended. Finally, the models and recommended values were preliminarily verified with asphalt overlay test sections on Interstate 20 near Atlanta, Texas.
Monograph Title: Monograph Accession #: 01356813
Report/Paper Numbers: 11-2460
Language: English
Authors: Hu, ShengZhou, FujieScullion, ThomasPagination: pp 37-46
Publication Date: 2011
ISBN: 9780309167468
Media Type: Print
Features: Figures
(2)
; Photos
(2)
; References
(12)
; Tables
(9)
TRT Terms: Geographic Terms: Subject Areas: Highways; Materials; Pavements; I31: Bituminous Binders and Materials
Files: TRIS, TRB, ATRI
Created Date: Nov 14 2011 9:15AM
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