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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: Practical Implications of Lithium-Based Chemicals and Admixtures in Controlling Alkali-Aggregate Reactions
Author(s): H. Wang, S. Tysl, and J. E. Gillott
Publication: Special Publication
Appears on pages(s): 353-366
Keywords: admixtures; air entrainment; alkali-aggregate reactions; compressive strength; expansion; flexural strength; freeze-thaw durability; lithium compounds; water-cement ratio; Materials Research
Abstract:Two well-understood and defined reactions in concrete are known as alkali-silica reaction (ASR) and alkali-carbonate reaction (ACR). These two reactions are extremely detrimental to the integrity of concrete structures. It is known that lithium-based chemical compounds can control and/or eliminate the expansion caused by ASR. Based on this technology, a commercial chemical admixture has been developed. The admixture is a ready-to-use liquid product formulated to meet ASTM C 494 requirements as a Type A water-reducing admixture. This product is not intended to control ACR-induced expansion. Therefore, identification of the types of alkali-aggregate reactions is necessary to effectively control concrete expansion.
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