ASTM International - ASTM C1778-20

Standard Guide for Reducing the Risk of Deleterious Alkali-Aggregate Reaction in Concrete

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Organization: ASTM International
Publication Date: 1 April 2020
Status: active
Page Count: 11
ICS Code (Concrete and concrete products): 91.100.30
significance And Use:

5.1 This guide provides recommendations for identifying the potential for deleterious AAR and selecting appropriate preventive measures, based on a prescriptive-based or performance approach, to... View More

scope:

1.1 This guide provides guidance on how to address the potential for deleterious alkali aggregate reaction (AAR) in concrete construction. This guide addresses the process of identifying both potentially alkali-silica reactive (ASR) and alkali-carbonate reactive (ACR) aggregates through standardized testing procedures and the selection of mitigation options to minimize the risk of expansion when ASR aggregates are used in concrete construction. Mitigation methods for ASR aggregates are selected using either prescriptive or performance-based alternatives. Preventive measures for ACR aggregates are limited to avoidance of use. Because the potential for deleterious reactions depends not only on the concrete mixture but also the in-service exposure, guidance is provided on the type of structures and exposure environments where AAR may be of concern.

1.2 Units-The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in nonconformance with the standard.

1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.

1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

Document History

ASTM C1778-20
April 1, 2020
Standard Guide for Reducing the Risk of Deleterious Alkali-Aggregate Reaction in Concrete
5.1 This guide provides recommendations for identifying the potential for deleterious AAR and selecting appropriate preventive measures, based on a prescriptive-based or performance approach, to...
December 1, 2019
Standard Guide for Reducing the Risk of Deleterious Alkali-Aggregate Reaction in Concrete
5.1 This guide provides recommendations for identifying the potential for deleterious AAR and selecting appropriate preventive measures, based on a prescriptive-based or performance approach, to...
June 15, 2019
Standard Guide for Reducing the Risk of Deleterious Alkali-Aggregate Reaction in Concrete
5.1 This guide provides recommendations for identifying the potential for deleterious AAR and selecting appropriate preventive measures, based on a prescriptive-based or performance approach, to...
June 1, 2019
Standard Guide for Reducing the Risk of Deleterious Alkali-Aggregate Reaction in Concrete
5.1 This guide provides recommendations for identifying the potential for deleterious AAR and selecting appropriate preventive measures, based on a prescriptive-based or performance approach, to...
July 1, 2016
Standard Guide for Reducing the Risk of Deleterious Alkali-Aggregate Reaction in Concrete
5.1 This guide provides recommendations for identifying the potential for deleterious AAR and selecting appropriate preventive measures, based on a prescriptive-based or performance approach, to...
October 1, 2014
Standard Guide for Reducing the Risk of Deleterious Alkali-Aggregate Reaction in Concrete
5.1 This guide provides recommendations for identifying the potential for deleterious AAR and selecting appropriate preventive measures, based on a prescriptive-based or performance approach, to...
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