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Publication Number: FHWA-RD-02-085
Date: July 2006

Highway Concrete Technology Development and Testing Volume Iv:Field Evaluation of SHRP C-206 Test Sites (Early Opening of Full-Depth Pavement Repairs)

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FOREWORD

The objective of this study was to monitor and evaluate the performance of experimental fulldepth repairs made with high-early-strength (HES) materials placed under Strategic Highway Research Program (SHRP) project C-206, Optimization of Highway Concrete Technology. The C-206 full-depth repair experiment was conducted to demonstrate and validate the technologies that allow early opening of full-depth portland cement concrete (PCC) pavement repairs to traffic and to document the information needed to apply this technology.

The experimental factors for the full-depth repair experiment included material type, strength at opening, and repair length. A total of 11 different HES concrete mixes with opening times ranging from 2 to 24 hours were evaluated at 2 field sites (U.S. I-20, Augusta, GA, and State Route 2, Vermilion, OH).

One goal of the SHRP C-206 full-depth repair experiment was to establish guidelines for the minimum strength required at opening time to ensure adequate performance of full-depth PCC pavement repairs. Based on analytical results, guidelines for early opening of full-depth PCC pavement repairs were developed under SHRP C-206; however, long-term monitoring was needed to verify the guidelines developed under SHRP C-206—that task was carried out under this study.

This report presents the results of annual surveys and analysis of the collected data. The report for each site begins with a brief description of the field sections, followed by a discussion of performance of test sections. Finally, conclusions and recommendations for possible changes to fast-track full-depth repair practice are provided based on findings of this study.

Gary L. Henderson
Director
Office of Infrastructure
Research and Development

NOTICE

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 and manufacturers: names appear in this report only because they are considered essential to the object of the document.

1. Report No.

FHWA-RD-02-085

2. Government Accession No.

3. Recipient's Catalog No.

4. Title and Subtitle

Strategic Highway Research Program

Highway Concrete Technology Development and Testing: Volume IV—Field Evaluation of Strategic Highway Research Program (SHRP) C-206 Test Sites (Early Opening of Full-Depth Pavement Repairs)

5. Report Date

July 2006

6. Performing Organization Code

7. Author(s)

H. Thomas Yu, Jagannath Mallela, and Michael I. Darter

8. Performing Organization Report No.

9. Performing Organization Name and Address

ERES Division of Applied Research
Associates, Inc.
505 W. University Avenue
Champaign, IL 61820-3915

10. Work Unit No. (TRAIS)

11. Contract or Grant No.

DTFH61-94-C-00009

12. Sponsoring Agency's Name and Address

Office of Engineering and Highway
Operations Research and Development
Federal Highway Administration
6300 Georgetown Pike
McLean, VA 22101-2296

13. Type of Report and Period Covered

Final Report

14. Sponsoring Agency's Code

15. Supplementary Notes

FHWA Contracting Officer’s Technical Representative: Monte Symons, P.E.

16. Abstract

The objective of this study was to monitor and evaluate the performance of experimental full-depth repairs made with highearly-strength (HES) materials placed under Strategic Highway Research Program (SHRP) project C-206, Optimization of Highway Concrete Technology. The C-206 full-depth repair experiment was conducted to demonstrate and validate the technologies that allow early opening of full-depth portland cement concrete (PCC) pavement repairs to traffic and to document the information needed to apply this technology. The experimental factors for the full-depth repair experiment included material type, strength at opening, and repair length. A total of 11 different HES concrete mixes with opening times ranging from 2 to 24 hours were evaluated at 2 field sites (U.S. I-20, Augusta, GA and State Route 2, Vermilion, OH).

The scope of this study included 5-year monitoring of SHRP C-206 full-depth experiment sections, analyzing the data, and revising the guidelines for early opening of full-depth PCC pavement repairs as needed. The monitoring program consisted of annual visual distress surveys to monitor the development of cracking, faulting, and spalling. The annual surveys were conducted from the fall of 1994 through the fall of 1998. The results of this evaluation showed that full-depth repairs made with HES PCC can provide good long-term performance; however, adverse temperature conditions during installation can cause premature failures. Extremely high PCC temperatures during curing should also be avoided. The fatigue damage due to early opening is negligible, especially for repairs of 3.7 m or shorter. Within the range of strength evaluated under SHRP C-206, the strength at opening could not be correlated to performance. Based on the results of this evaluation, no changes are recommended to the opening criteria suggested in the SHRP C-206 manual of practice.

17. Key Words

Concrete pavement, high-early-strength, early opening, full-depth repair

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)

Unclassified

20. Security Classif. (of this page)

Unclassified

21. No. of Pages

51

22. Price

Form DOT F 1700.7 (8-72) Reproduction of completed page authorized

SI (Modern Metric) Conversion Factors

TABLE OF CONTENTS

  1. Introduction
  2. Evaluation of Georgia Site
  3. Evaluation of Ohio Site
  4. Conclusions and Recommendations

Appendix A. Summary of Annual Survey Results

Appendix B. Summary Tables of Annual Survey Data

References

LIST OF FIGURES

LIST OF TABLES

 

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