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Publication Number: FHWA-RD-02-086
Date: August 2006

Highway Concrete Pavement Technology Development and Testing Volume V:Field Evaluation of SHRP C-206 Test Sites (Bridge Deck Overlays)

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FOREWORD

Two types of concrete overlays (silica fume concrete (SFC) and latex–modified Type III portland cement concrete (LMC–III) were installed and tested as part of the Strategic Highway Research Program (SHRP) Project C–206: Optimization of Highway Concrete Technology—Bridge Deck Overlays. The two different overlay types were chosen for their ability to fill two different needs: use of SFC as a long-term, low-permeability overlay; and use of LMC–III as a high earlystrength concrete for use when traffic had to be restored after as little as 24 hours. This report summarizes the 5-year study to evaluate the long-term performance of the overlays. Evaluation and comparison of SFC and LMC–III overlays were performed at four locations. The test sites were in Ohio and Kentucky. Each location included SFC and LMC-III overlays on opposite directions of a bridge structure. All overlays were installed in 1992. This study evaluated the overlays each year between 1994 and 1998. All overlays had high initial bond strengths, and the bond strengths remained high over the study period when tested away from delaminations. The overlays were generally rated as good condition in 1998, after 6 years of service, though some individual sites were rated as fair due to extensive cracking. Though good performance was achieved from both SFC and LMC-III overlays, the service life of the overlays tended to vary based on the site location. Generally, cracking and delamination of the overlays tend to increase with time. Typically, all overlays should be inspected biannually for cracking and delamination and routine maintenance including consideration of crack and delamination repairs to extend the service life of the SFC and LMC–III overlays.

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.

Quality Assurance Statement

The Federal Highway Administration (FHWA) provides high-quality information to serve Government, industry, and the public in a manner that promotes public understanding. Standards and policies are used to ensure and maximize the quality, objectivity, utility, and integrity of its information. FHWA periodically reviews quality issues and adjusts its programs and processes to ensure continuous quality improvement.

Technical Report Documentation Page

1. Report No.

FHWA-RD-02-086

2. Government Accession No.

3. Recipient's Catalog No.

4. Title and Subtitle

Strategic Highway Research Program

Highway Concrete Technology Development and Testing: Volume V—Field Evaluation of Strategic Highway Research Program (SHRP) C-206 Test Sites (Bridge Deck Overlays)

5. Report Date

August 2006

6. Performing Organization Code

7. Author(s)

Stephen R. Boyd and Paul D. Krauss; Wiss, Janney, Elstner Associates, Inc.

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

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. This work was conducted under subcontract by Wiss, Janney, Elstner Associates, Inc.

16. Abstract

Two types of concrete overlays (silica fume concrete (SFC) and latex-modified Type III portland cement concrete (LMC-III) were installed and tested as part of the Strategic Highway Research Program (SHRP) Project C-206: Optimization of Highway Concrete Technology—Bridge Deck Overlays. The two different overlay types were chosen for their ability to fill two different needs: use of SFC as a long-term, low-permeability overlay; and use of LMC-III as a high early-strength concrete when traffic had to be restored after as little as 24 hours. This report summarizes the 5-year study to evaluate the long-term performance of the overlays. Evaluation and comparison of SFC and LMC-III overlays were performed at four locations. The test sites were in Ohio and Kentucky. Each location included SFC and LMC-III overlays on opposite directions of a bridge structure. All overlays were installed in 1992. This study evaluated the overlays each year between 1994 and 1998. All overlays had high initial bond strengths, and the bond strengths remained high over the study period when tested away from delaminations. The overlays were generally rated as good condition in 1998, after 6 years of service, though some individual sites were rated as fair due to extensive cracking. Though good performance was achieved from both SFC and LMC-III overlays, the service life of the overlays tended to vary based on the site location. Generally, cracking and delamination of the overlays tend to increase with time. Typically, all overlays should be inspected biannually for cracking and delamination and routine maintenance, including consideration of crack and delamination repairs to extend the service life of the SFC and LMC-III overlays.

17. Key Words

Concrete pavement, high early-strength, early opening, fulldepth 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

80

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. SUMMARY OF TESTING TECHNIQUES
  3. INTERSTATE 270 (I—270) IN COLUMBUS, OH
  4. U.S. 52 IN NEW RICHMOND, OH
  5. I–265 OVER KY 22, JEFFERSON COUNTY, KY
  6. U.S. 41 OVER KY 351, HENDERSON, KY
  7. PROJECT SUMMARY

LIST OF FIGURES

LIST OF TABLES

 

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The Federal Highway Administration (FHWA) is a part of the U.S. Department of Transportation and is headquartered in Washington, D.C., with field offices across the United States. is a major agency of the U.S. Department of Transportation (DOT).
The Federal Highway Administration (FHWA) is a part of the U.S. Department of Transportation and is headquartered in Washington, D.C., with field offices across the United States. is a major agency of the U.S. Department of Transportation (DOT). Provide leadership and technology for the delivery of long life pavements that meet our customers needs and are safe, cost effective, and can be effectively maintained. Federal Highway Administration's (FHWA) R&T Web site portal, which provides access to or information about the Agency’s R&T program, projects, partnerships, publications, and results.
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