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4SIGHT Manual: A Computer Program for Modelling Degradation of Underground Low Level Waste Concrete Vaults

Published

Author(s)

Kenneth A. Snyder, J R. Clifton

Abstract

A computer program has been written to facilitate performance assessment of concrete vaults used in Low Level Waste (LLW) disposal faciliites. The computer program is a numerical computer model of degradation in concrete. A one-dimensional finite difference equation is used to propagate ions by precipitation/dissolution of available salts. The precipitation/dissolution of salts, in turn, changes the transport properties, which changes the rate of ion transport. The result is a model which incorporates the synergism of multiple degradation mechanisms. This Report is self-contained. It includes the installation instructions, user manual, technical details, and source code. The program was written using a literate programming tool and the "pretty-printing" output of the source code is attached at the end of this report
Citation
NIST Interagency/Internal Report (NISTIR) - 5612
Report Number
5612

Keywords

building technology, computer models, concretes, corrosion, corrosion of reinforcement, degradation, leaching, radioactive wastes, service life, sulfate attack

Citation

Snyder, K. and Clifton, J. (1995), 4SIGHT Manual: A Computer Program for Modelling Degradation of Underground Low Level Waste Concrete Vaults, NIST Interagency/Internal Report (NISTIR), National Institute of Standards and Technology, Gaithersburg, MD, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=916573 (Accessed July 15, 2024)

Issues

If you have any questions about this publication or are having problems accessing it, please contact reflib@nist.gov.

Created June 1, 1995, Updated June 2, 2021