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Founded in 1904 and headquartered in Farmington Hills, Michigan, USA, the American Concrete Institute is a leading authority and resource worldwide for the development, dissemination, and adoption of its consensus-based standards, technical resources, educational programs, and proven expertise for individuals and organizations involved in concrete design, construction, and materials, who share a commitment to pursuing the best use of concrete.
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Home > Publications > International Concrete Abstracts Portal
The International Concrete Abstracts Portal is an ACI led collaboration with leading technical organizations from within the international concrete industry and offers the most comprehensive collection of published concrete abstracts.
Title: Mitigating Alkali-Silica Reaction when Using High-Alkali Cements
Author(s): Kerrie Kerenidis and R. Doug Hooton
Publication: Concrete International
Appears on pages(s): 34-39
Keywords: alkali-silica reaction, supplementary cementitious materials, reactive aggregate, high-alkali cement
Abstract:When adequately mitigated, alkali-silica reactive aggregates can be used in concrete, but testing potential mitigation measures may require significant lead time. An alternative approach, CSA A23.2-27A, “Use of Supplementary Cementing Materials for Counteracting Alkali-Silica Reaction,” incorporates long-term performance data from laboratory prisms, outdoor exposure tests, and structures. It limits maximum alkali contents of concrete and minimum dosages of supplementary cementitious materials for use with known reactive aggregates. CSA A23.2-27A was introduced in 2000 and updated in 2004 and 2009. It’s the model for the new AASHTO PP65, and it will serve as a resource for the new ASTM Subcommittee C09.50 on Risk Management for Alkali-Aggregate Reactions. This article summarizes a series of tests verifying the requirements in CSA A23.2-27A.
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