- Author
-
Snyder, K. A.
|
Clifton, J. R.
- Title
- Calculating Cement Paste and Mortar Diffusivity From Conductivity Measurements: Preliminary Results of a New Method.
- Coporate
- National Institute of Standards and Technology, Gaithersburg, MD
- Report
-
NISTIR 5235,
October 1993,
14 p.
- Distribution
- AVAILABLE FROM National Technical Information Service (NTIS), Technology Administration, U.S. Department of Commerce, Springfield, VA 22161. Telephone: 1-800-553-6847 or 703-605-6000; Fax: 703-605-6900. Website: http://www.ntis.gov
- Keywords
-
building technology
|
conductivity
|
diffusivity
|
impedance spectroscopy
|
service life
- Abstract
- A new method to determine the chloride diffusivity of concrete is being developed which is both expeditious and accurate. The method is based upon the Nernst-Einstein equation relating conductivity and diffusivity. Results from a single measurement can be used to calculate the diffusivity for any specified ion, given the "free" diffusivity of that ion. The experimental procedure, along with preliminary results, are reported.