Comparative Study of Procedures for the Analysis of Chloride in Hardened Concrete

Report No: 77-R7

Published in 1976

About the report:

In the widely used potentiometric titration procedure for the analysis of chloride in powdered hardened concrete samples, difficulties have often been encountered when determining the endpoint. These difficulties have been eliminated through the use of the Gran method of endpoint determination, which also simplifies the titrations and improves the overall precision of the procedure. Using test specimens, the accuracy of this improved potentiometric titration procedure was evaluated by comparison with the atomic absorption and neutron activation procedures developed for the same analysis. The comparison indicated that the improved potentiometric titration procedure is the simplest and most economical of the three, and possibly is the most accurate.

Disclaimer Statement:The contents of this report reflect the views of the author(s), who is responsible for the facts and the accuracy of the data presented herein. The contents do not necessarily reflect the official views or policies of the Virginia Department of Transportation, the Commonwealth Transportation Board, or the Federal Highway Administration. This report does not constitute a standard, specification, or regulation. Any inclusion of manufacturer names, trade names, or trademarks is for identification purposes only and is not to be considered an endorsement.

Authors

Other Authors

G. G. Clemeña, John W. Reynolds, Randy McCormick

Last updated: January 28, 2024

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