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: Aggregate Reaction with Cement Alkalies
Author(s): Willard H. Parsons and Herbert Insley
Publication: Journal Proceedings
Appears on pages(s): 625-632
Abstract:Experiments reported tend to support and amplify Hensen's hypothesis on alkali-aggregate reaction. Test specimens composed of high-alkali cement and reactive aggregate (opal) were exposed to conditions promoting the reaction resulting in cracking and expansion. Petrographic examination at frequent intervals during the course of exposure indicated that the chemical reaction results in liquefaction, swelling and migration of the reaction products. The liquefied gel produced by the reaction fills pores existing in the specimen. After the poe is filled, a reaction at the pore wall occurs to form a dense, semi-permeable membrane through which osmosis takes place, resulting in expansion and cracking.
Click here to become an online Journal subscriber