Computer Integrated Knowledge System for High Performance Concrete

Please note that the system entry has been simplified. You only need to select which system of units you would like to use for your calculations!

Select to use Inch-Pound or SI units

Inch Pounds

Reference article:

Bentz, D.P., Clifton, J.R., and Snyder, K.A., A Prototype Computer-Integrated Knowledge System: Predicting the Service Life of Chloride-Exposed Concrete, Concrete International, 18(12), 42-47, Dec. 1996.

Software disclaimer

This software was developed at the National Institute of Standards and Technology by employees of the Federal Government in the course of their official duties. Pursuant to title 17 Section 105 of the United States Code this software is not subject to copyright protection and is in the public domain. This software is an experimental system. NIST assumes no responsibility whatsoever for its use by other parties, and makes no guarantees, expressed or implied, about its quality, reliability, or any other characteristic. We would appreciate acknowledgement if the software is used.

This software can be redistributed and/or modified freely provided that any derivative works bear some notice that they are derived from it, and any modified versions bear some notice that they have been modified.

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