1. Report No. 2. Government Accession No. 3. Recipient's Catalog No. 4. Title and Subtitle Alkali Silica Reaction Mitigation & Prevention Measures-Phase I 5. Report Date December 2016 6. Performing Organization Code AHTD and MBTC 7. Authors Richard Deschenes, Jr. and W. Micah Hale 8. Performing Organization Report No. MBTC 4000 9. Performing Organization Name and Address 4190 Bell 1 University of Arkansas Fayetteville, AR 72701 10. Work Unit No. (TRAIS) 11. Contract or Grant No. 12. Sponsoring Agency Name and Address Arkansas Highway and Transportation Department P. O. Box 2261 Little Rock, AR 72203 13. Type of Report and Period Covered Final Report 14. Sponsoring Agency Code 15. Supplementary Notes Supported by a grant from the Arkansas Highway and Transportation Department and the Mack Blackwell Rural Transportation Center 16. Abstract In 2012 it was discovered that roughly 4 miles of interstate median barrier along Interstate 540 had rapidly deteriorated. After the initial inspection, a sample was submitted for analysis, and found to contain evidence of alkali-silica reaction (ASR). A research program was implemented with the goal of determining the cause of ASR and developing a program for mitigating the ongoing deterioration. The median barrier had not deteriorated equally throughout the 4 miles, and the level of damage varied considerable throughout the length. A visual inspection of the median barrier was conducted and the median barrier was divided into sections based on the visible damage. A research program was implemented to evaluate several treatment methods, with the goal of slowing or arresting the deterioration within the median barrier and in the concrete pavement. 17. Key Words Alkali silica reaction, silane, concrete 18. Distribution Statement NO RESTRICTIONS. THIS DOCUMENT IS AVAILABLE FROM THE NATIONAL TECHNICAL INFORMATION SERVICE, SPRINGFIELD, VA. 22161 19. Security Classif. (of this report) UNCLASSIFIED 20. Security Class. (of this page) UNCLASSIFIED 21. No. of Pages 86 22. Price N/A
Alkali Silica Reaction Mitigation & Prevention Measures-Phase I
Apr 26, 2023
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