VIEW LARGER COVER
The realistic assessment of alkali-silica reactivity (ASR) and identification of appropriate preventive measures remain major challenges to the concrete and aggregate industry. Guidelines for estimating ASR potential are currently provided in AASHTO R 80 and ASTM C1778. However, since these guidelines are based on testing concrete mixtures with rather high cement and alkali contents, they may not properly apply to mixtures with moderate or low cement and alkali contents, which are generally used in highway construction. Including such mixtures in the development of the guidelines will make ASR assessment more realistic and the selection of mitigation measures more effective.
NCHRP Research Report 1083: Alkali-Silica Reactivity Potential and Mitigation: Test Methods and State of Practice, from TRB's National Cooperative Highway Research Program, provides recommendations to improve currently used test methods for estimating ASR potential in concrete for highway construction.
Supplemental to the report are an ASR Exposure Blocks Database, Appendix A (Literature Review), Appendix B (Aggregates Petrographic Reports), Appendix C (Concrete Block Expansions), Appendix D (Changes to Guidelines), Appendix E (Changes to Test Methods), Appendix F (NCHRP 10-103 Implementation Plan), Appendix G (Laboratory Testing Standard Deviations).
Loading stats for Alkali-Silica Reactivity Potential and Mitigation: Test Methods and State of Practice...
