Identifying Incompatible Combinations of Concrete Materials: Volume II-Test Protocol - Concrete (FHWA-HRT-06-080) - Pavements

Identifying Incompatible Combinations of Concrete Materials:
Volume II-Test Protocol

FHWA-HRT-06-080, August 2006

FOREWORD

Unexpected interactions between otherwise acceptable ingredients in portland cement concrete are becoming increasingly common as cementitious systems become more complex and demands on the systems are more rigorous. Such incompatibilities are exhibited as early stiffening or excessive retardation, potential for uncontrolled early-age cracking, and unstable or unacceptable air void systems.

The protocol in this volume was developed to allow product manufacturers, concrete producers, contractors, and owners to monitor their materials and concrete systems. The protocol has two phases: relatively simple field tests to provide early warnings of potential problems, and central laboratory tests to support and confirm the field work. Tests conducted before construction begins help users to plan for materials and environment changes. By monitoring materials with relatively simple field tests during construction, the users can detect when significant changes have occurred, indicating potential construction problems.

Gary 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 the use of the information contained in this document. This report does not constitute a standard, specification, or regulation.

The U.S. Government does not endorse products or manufacturers. Trademarks or manufacturers' names appear in this report only because they are considered essential to the objective 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. HRT-06-080	2. Government Accession No	3. Recipient's Catalog No.
4. Title and Subtitle Identifying Incompatible Combinations of Concrete Materials: Volume II-Test Protocol		5. Report Date August 2006
		6. Performing Organization code:
7. Author(s) Peter C. Taylor Vagn C. Johansen Luis A. Graf Ronald L. Kozikowski Jerzy Z. Zemajtis Chiara F. Ferraris		8. Performing Organization Report No.
9. Performing Organization Name and Address CTLGroup 5400 Old Orchard Road Skokie, IL 60077		10. Work Unit No.
		11. Contract or Grant No. DTFH61-03-X-00102
12. Sponsoring Agency Name and Address		13. Type of Report and Period Covered FHWA, and Portland Cement Association 5420 Old Orchard Road Skokie, IL 60077
		14. Sponsoring Agency Code
15. Supplementary Notes Collaboration with Chiara F. Ferraris of NIST was secured under separate contract to FHWA. The Contract Officer's Technical Representative was Peter Kopac, HRDI-12.
16. Abstract Unexpected interactions between otherwise acceptable ingredients in portland cement concrete are becoming increasingly common as cementitious systems become more complex and demands on the systems are more rigorous. Examples of incompatibilities are early stiffening or excessive retardation, potential for uncontrolled early-age cracking, and unstable or unacceptable air void systems. Several test methods have been reviewed to assess their usefulness in early detection of incompatibility, and thus prevent pavement field problems. A protocol has been developed to allow product manufacturers, concrete producers, contractors, and owners to monitor materials and concrete systems. The protocol has two phases: relatively simple field tests to provide early warnings of potential problems and central laboratory tests to support and confirm the field work.
17. Key Words Cement, fly ash, slag, incompatibility, admixture, early stiffening, cracking, air void system		18. Distribution Statement
19. Security Classif. (of this report)	20. Security Classif. (of this Page)	21. No of Pages 83	23. Price

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SI* (Modern Metric) Conversion Factors

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