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(Return to Cement Hydration and Degradation Modeling Software)

The 4SIGHT computer program was written to facilitate concrete performance prediction under various exposure conditions. An HTML GUI now exists, so users can now go here to use the program. The web page contains entries for the user to specify concrete properties and the boundary conditions (ionic species in contact with the concrete). 4SIGHT uses the cedar++ C++ object code library to perform a transport and reaction calculation based on user input. Currently, relevant user input includes concrete mixture proportions, cement properties, crack properties, and concrete member dimensions.

  • The 4SIGHT computer program has been designed to facilitate performance assessment of underground concrete structures.
  • 4SIGHT uses a continuum scale transport/reaction model to prediction the dissolution and/or precipitation of minerals and salts.
  • This web application is a graphical front-end to the original command line program. A description of the assumptions, the algorithms, the validation, and the meaning of input variables are discussed in a report published by NIST. Click on NIST-IR 6747 to download the 750 kB PDF document.


Type of software: Concrete service life prediction program


Hypertext markup language (HTML/JavaScript)

Download information:


NIST-IR 6747: Validation and Modification of the 4SIGHT Computer Program


The National Institute of Standards and Technology shall not be liable for any damage that may result from using the 4SIGHT computer program. NIST has made its best efforts to assure that the information provided by 4SIGHT is correct and accurate. However, NIST makes no warranties to this effect.


General Information:
Dr. Kenneth A. Snyder, Leader, Inorganic Materials Group
301-975-4260 Telephone

100 Bureau Drive, M/S 8615
Gaithersburg, MD 20899-8615