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Guidelines for the Use of Lithium to Mitigate Or Prevent Alkali-silica Reaction (ASR)

出版	U.S. Department of Transportation, Federal Highway Administration, Office of Infrastructure R & D, Turner-Fairbank Highway Research Center, 2003
URL	http://books.google.com.hk/books?id=99V2duoQ2QMC&hl=&source=gbs_api

註釋This report is intended to provide practitioners with the necessary information and guidance to test, specify, and use lithium compounds in new concrete construction, as well as in repair and and service life extension applications. This report first provides a basic overview of ASR, including information on mechanisms, symptoms of ASR damage in field structures, mitigation approaches, test methods, and specifications. A comprehensive summary of lithium compounds is provided next, including information on their production, availability, and use in laboratory concrete studies and field applications (including a range of case studies). Guidelines for using lithium compounds as an admixture in new concrete and for treating existing structures suffering from ASR-induced damage then are presented, including information on how to assess the efficacy of lithium compounds in laboratory tests. Some basic information also is provided on the economics of using lithium both in new concrete and as a treatment for existing structures. Finally, the report provides a summary of conclusions and identifies several technical and practical issues that should be considered for future laboratory studies and field applications.