PERFORMANCE ANALYSIS FOR FLEXIBLE PAVEMENTS WITH STABILIZED BASE

The performance of experimental pavements at the Pennsylvania Transportation Research Facility was evaluated. These pavements contained five different types of base course: bituminous concrete, aggregate bituminous, aggregate cement, aggregate-lime-pozzolan, and crushed stone. Most of the pavements had been subjected to about 2.4 million 18-kip equivalent axle loads (EALs), which is equivalent to approximately 40-years service life. Data analyzed were pavement serviceability index and three distress manifestations--roughness, rutting, and cracking. Some existing pavement performance models were also evaluated by using the performance data. The performance data indicate that the trend of serviceability index loss with increasing EAL follows the power function developed at the American Association of State Highway Officials (AASHO) Road Test. Of the performance models evaluated--AASHO, modified Highway Research Board (HRB), and Painter's models--the AASHO model appears to predict best, although it overpredicts pavement service life. By using a curve-fitting process and regression analysis, equations that relate pavement performance indicators and structural number are formulated. These equations permit prediction of the rate of serviceability loss and pavement life required to reach a certain present serviceability index drop. Also developed are equations that relate distress with structural number and critical pavement response with pavement service life. These equations may be used to predict various distress intensities from structural numbers and also used to predict pavement life from critical response. According to the results of the analysis, the maximum compressive strain at the top of the subgrade appears to be a better factor than the maximum surface deflection for predicting pavement service life. (Author)

• Record URL:
  • http://onlinepubs.trb.org/Onlinepubs/trr/1982/888/888-010.pdf
• Summary URL:
  • https://scholar.google.com/scholar_lookup?title=PERFORMANCE+ANALYSIS+FOR+FLEXIBLE+PAVEMENTS+WITH+STABILIZED+BASE&author=M.+WANG&publication_year=1982
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• Supplemental Notes:
  • Publication of this paper sponsored by Committee on Flexible Pavement Design. 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.
• Authors:
  • WANG, M C
• Publication Date: 1982

Media Info

• Media Type: Print
• Features: Figures; References; Tables;
• Pagination: pp 70-76
• Monograph Title: Structural performance of pavement systems
• Serial:
  • Transportation Research Record
  • Issue Number: 888
  • Publisher: Transportation Research Board
  • ISSN: 0361-1981

Subject/Index Terms

• TRT Terms: Asphalt concrete; Bituminous aggregates; Calcium oxide; Cement; Crushed rock; Equations; Flexible pavements; Forecasting; Pavement base course; Pavement cracking; Pavement performance; Pavement ruts; Pozzolan; Regression analysis; Roughness; Service life; Stabilized materials; Test procedures
• Uncontrolled Terms: Rut
• Old TRIS Terms: Pavement serviceability ratings
• Subject Areas: Data and Information Technology; Design; Highways; Materials; Pavements; I23: Properties of Road Surfaces;

Filing Info

• Accession Number: 00372933
• Record Type: Publication
• ISBN: 0309035007
• Files: TRIS, TRB
• Created Date: May 31 1983 12:00AM