Chloride Analysis of Concrete by Ion-Specific Potentiometry: Its Implementation in Virginia

Report No: 75-R21

Published in 1974

About the report:

In response to an urgent request from the Materials Division, a literature search was conducted to find a suitable analytical method for the determination of chloride in hardened concrete. It was found that an ion-specific potentiometric method employing a chloride-extraction procedure improved by H. A. Berman of the Federal Highway Administration was the best available. Subsequent laboratory evaluation of this method indicated it to be good as far as accuracy and precision are concerned; however, modifications were needed, specifically on the titration procedure, to reduce analysis time and to eliminate analytical uncertainty involved when samples have extremely low chloride contents. Consequently, important modifications were made and a final analytical procedure is recommended for implementation by the Department.

Documents

75-R21

_{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

G. G. Clemeña, W. G. O'Neal

Last updated: February 5, 2024