U.S. Department of Transportation
Federal Highway Administration
1200 New Jersey Avenue, SE
Washington, DC 20590
Federal Highway Administration Research and Technology
Coordinating, Developing, and Delivering Highway Transportation Innovations
|This report is an archived publication and may contain dated technical, contact, and link information|
Publication Number: FHWA-RD-02-088
Date: May 2003
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This report documents a study conducted to evaluate load transfer efficiency of cracks and joints for rigid pavements included in the Long-Term Pavement Performance (LTPP) program. Using deflection testing data, load transfer efficiency parameters were determined and joint stiffnesses were backcalculated. Trend analysis was performed to evaluate the effect of design features and side conditions on load transfer efficiency. The analysis was conducted for all General Pavement Studies (GPS), Special Pavement Studies (SPS), and Seasonal Monitoring Program (SMP) test sections.
This report will be of interest to highway agency engineers involved in the deflection data collection, processing, and analysis of data collected to improve on the design procedures, as well as future researchers who will improve structural models of rigid pavements.
T. Paul Teng, P.E.
Director, Office of Infrastructure
Research and Development
This document is disseminated under the sponsorship of the U.S. Department of Transportation in the interest of information exchange. The U.S. Government assumes no liability for its contents or use thereof. This report does not constitute a standard, specification, or regulation.
The U.S. Government does not endorse products or manufacturers. Trade or manufacturers' names appear herein only because they are considered essential to the objective of this document.
Technical Report Documentation Page
|1. Report No.
|2. Government Accession No.||3. Recipient's Catalog No.|
|4. Title and Subtitle
EVALUATION OF JOINT AND CRACK LOAD TRANSFER FINAL REPORT
|5. Report Date|
|6. Performing Organization|
Lev Khazanovich and Alex Gotlif
|8. Performing Organization Report No.
|9. Performing Organization Name and Address
A Division of Applied Research Associates, Inc.
505 W. University Avenue
Champaign, IL 61820
|10. Work Unit No.
|11. Contract or Grant No.
|12. Sponsoring Agency Name
Office of Infrastructure R & D
Federal Highway Administration
6300 Georgetown Pike
McLean, Virginia 22101-2296
|13. Type of Report and Period Covered
Final Report March 2001 to January 2002
|14. Sponsoring Agency Code|
|15. Supplementary Notes
Work was conducted as part of the LTPP Data Analysis Technical Support Contract.Contracting Officer's Technical Representative (COTR): Cheryl Allen Richter, HRDI-13
This report documents an evaluation of load transfer efficiency (LTE) of cracks and joints for rigid pavements included in the Long-Term Pavement Performance (LTPP) program. LTE is an important parameter affecting pavement performance. This study presents the first systematic analysis of the deflection data collected under the LTPP program related to LTE. Representative LTE indexes and joint stiffnesses were calculated for all General Pavement Studies (GPS), Special Pavement Studies (SPS), and Seasonal Monitoring Program (SMP) rigid test sections. Data tables that include computed parameters were developed for inclusion in the LTPP Information Management System (IMS). Trend analysis was performed to evaluate the effect of design features and site conditions on LTE. Key findings from this study:
|17. Key Words
Load transfer efficiency, joints, cracks, PCC, rigid pavements, joint opening
|18. Distribution Statement
No restrictions. This document is available to the public through the National Technical Information Service, Springfield, VA 22161.
|19. Security Classif. (of this report)
|20. Security Classif. (of this page)
|21. No. of Pages
LIST OF FIGURES
LIST OF TABLES