1. R•port No. 2. Government Acc•uion No. FHWA/TX-87+459-1 4. Titl• and Subtitle STABILIZED SUBBASE FRICTION STUDY FOR CONCRETE PAVEMENTS 7. Author/ s) James W. Wesevich, B. Frank McCullough, and Ned H. Burns 9. Performing Organization Nome and Address Center for Transportation Research The University of Texas at Austin Austin, Texas 78712-1075 12. Sponsoring Ag•ncy Nome ond Address Texas State Department of Highways and Public Transportation; Transportation Planning Division P. 0. Box 5051 Austin, Texas 78763-5051 15. Supplementary Notes TECHNICAL REPORT SHNO.RO TITLE PAGE 3. Recipient's Catalog Na. 5. Report Date April 1987 6. Performing Organization Code 8. Performing Orgoni zotion Report No. Research Report 4)9-1 10. Work Unit No. II. Controct or Grant No. Research Study 3-8-86-459 13. Type of Report and Period Covered Interim 14. Sponsoring Agency Code Study conducted in cooperation with the U. S. Department of Transportation, Federal Highway Administration. Research Study Title: of Subbase Friction Information for Use in Design of Concrete Pavement" 16. Abatroct Previously, research and testing have been carried out on loose unbinded subbases to determine their frictional characteristics concrete pavement movements. Stabilizing agents, such as asphalt, cement, and lime, are now being added to sub- bases to prevent pumping of subbase material from under pavements under saturated conditions. This report includes past experimental work performed on these out- dated subbases, along with experimental work performed within this project on stabilized subbases. A survey was carried out in order to determine the subbases most used presently and expected to be used in the future by the Texas State Department of Highways and Public Transportation. A theoretical explanation of subbase frictional behavior and its effect on concrete pavements is also given. Recommendations are given for additional investigation, to include additional stabilized subbases not tested and stabilized subbases at varying depths with different moistures and temperatures to observe their effect on subbase friction. 17. Key Words subbase, friction, concrete pavements, induced movements 18. Oi atribution Stot...,ent No restrictions. This document is available to the public through the National Technical Information Service, Springfield, Virginia 22161. 19. S•curity Clouif. (of this r•portl 20. Security Cloulf. (of this P•t•l :11. No. of Pogea 22. Price Unclassified Unclassified 196 Form DOT F 1700.7 ca-u1
STABILIZED SUBBASE FRICTION STUDY FOR CONCRETE PAVEMENTS
Jun 28, 2023
Welcome message from author
This document is posted to help you gain knowledge. Please leave a comment to let me know what you think about it! Share it to your friends and learn new things together.
Related Documents
