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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: Factors Influencing Chloride Test Results of Cementitious Systems
Author(s): David Trejo, Naga Pavan Vaddey, and Mahmoud Shakouri
Publication: Materials Journal
Appears on pages(s): 135-145
Keywords: acid-soluble chloride; water-soluble chloride; water to acidsoluble chloride ratio
Abstract:Many committees from the American Concrete Institute (ACI) report allowable admixed chloride (CA) limits for fresh concrete to minimize the risk of corrosion of steel reinforcement. These limits are based on water-soluble and acid-soluble chloride test methods. While most ACI documents report water-soluble CA limits only, some report both acid- and water-soluble CA limits by assuming water- to acid-soluble chloride ratio between 0.75 and 0.8. Debate exists within the concrete industry on adopting a single test method to assess admixed chlorides. Test results from this research indicate that the ratio of water- to acid-soluble test results vary for different cementitious systems, with mean values ranging from 0.08 to 0.77, indicating that the assumed 0.75 to 0.8 range is incorrect. The effects of study parameters on the outcome of the test results are discussed. Based on the generated test data, recommendations are provided for possible future revisions to ACI CA limits.
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