In today’s market, it is imperative to be knowledgeable and have an edge over the competition. ACI members have it…they are engaged, informed, and stay up to date by taking advantage of benefits that ACI membership provides them.
Read more about membership
Become an ACI Member
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.
American Concrete Institute
38800 Country Club Dr.
Farmington Hills, MI
Chat with Us Online Now
Feedback via Email
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: Pore Solution Chemistry and Alkali Aggregate Reaction
Author(s): P. J. Nixon and C. L. Page
Publication: Special Publication
Appears on pages(s): 1833-1862
Keywords: alkali-aggregate reactions; alkali content; blast furnace slag; cement pastes; chemical analysis; concretes; fly ash; mortars (material);silica; siliceous aggregates; reviews; water content; Materials Research
Abstract:Alkali-aggregate reaction is essentially a reaction between the hydroxyl ions in the pore solution of a mortar or concrete and the siliceous (or other alkali-susceptible) minerals in the aggregate. Study of the pore solution chemistry of mature cement pastes, mortars, and concretes has been possible in recent years through the development of pore solution expression techniques. This paper reviews the progress that has been made in explaining the phenomena associated with alkali-aggregate reactions in terms of pore solution composition. In particular, consideration is given to the effects of alkali level and water content of the concrete on the severity of reaction, the role of alkalis in pulverized fuel ashes, granulated blast furnace slags, and other cement replacement materials in determining their effectiveness in preventing damage and the contribution to pore solution alkalinity made by salt contamination of aggregates and deicing salts.
Click here to become an online Journal subscriber