The proper filling confirmation of the cavities in massive concrete structures of nuclear power plants by impact-echo method
Date issued
2007
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
University of West Bohemia
Abstract
Nuclear power plants (NPP) are duty to certify their security for renewal of operating license. Security can
be significantly affected by defects of ageing concrete reinforced structures. The methods, how to do in-service
inspections of these aging structures of NPP more quickly, cheaply and reliably, are still being looking for.
Advanced Impact-Echo method seams to be very hopeful. This paper is a part of extensive project and continues
a number of papers published in Czech as well as in foreign. It brings a method description and a main results
survey of the numerical modeling of the detection of grouted (repaired) voids in massive concrete structures.
Cavities are filled by grouting polyurethan compound CarboPur WF. We try to find out if it is possible or
impossible to confirm simply, by Impact-Echo method, if cavities have been filled properly. Consequently, these
numerical predictions will be verified on real (scaled 1:1) specimens in NRI Řež as a part of this project as well.
Description
Subject(s)
jaderná elektrárna, betonové struktury, metoda impact-echo, šíření vln, numerická simulace, technická diagnostika
Citation
Applied and Computational Mechanics. 2007, vol. 1, no. 1, p. 185-192.