Evaluating the Risk of Alkali-Silica Reaction in Wyoming: Continued Evaluation of Field Specimens, Proposed Mitigation Strategies and Improving Existing ASTM Standards

Project Details
STATE

WY

SOURCE

RIP

START DATE

09/11/12

END DATE

08/30/14

RESEARCHERS

Jennifer Tanner - Eisenhauer, University of Wyoming

SPONSORS

Bob Rothwell, Federal Highway Administration

KEYWORDS

Aggregates, Alkali silica reactions, American Society for Testing and Materials, Field tests, Fly ash, Mitigation practices, Monitoring, Wyoming

Project description

The purpose of this research is to continue to monitor and test existing Alkali-Silica Reaction (ASR) specimens; to evaluate the effectiveness of using fly ash as a mitigation tool; and to evaluate how to improve the American Society for Testing and Materials (ASTM) standards and update where necessary. This proposed study builds on a comprehensive test program of a suite of eight (8) aggregate types from pits around Wyoming, with primary focus in the Big Horn Basin and supplemental sources in Rock Springs and Cheyenne, Wyoming. The second phase of the proposal evaluates the effectiveness of using fly ash as a mitigation tool in new construction. The third phase of the proposal repeats the ASTM C 1293 testing for one inconclusive aggregate as well as considering a more rapid testing method.
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