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Analysis of selected non-destructive methods for diagnosis in new and old buildings

Schabowicz Krzysztof, Menéndez Orellana A. E., Andrianos N.

Badania Nieniszczące i Diagnostyka

2022

1-4

63--70

Techniki badań nieniszczących (NDT) są na dzień dzisiejszy podstawowym narzędziem stosowanym w inżynierii lądowej. Na podstawie szczegółowego przeglądu literatury przedstawiono w artykule kompleksową ocenę stanu technicznego budynku z zastosowaniem szeregu metod NDT. Ponadto przedstawiono odniesienia do publikacji zawierających opisy, zastosowania i studia przypadków każdej z metod NDT.

Non-destructive Testing (NDT) techniques are, as of today, a fundamental tool in civil engineering. Based on a thorough literature review, the scope of this article comprises a comprehensive assessment of the state-of-the-art of a series of NDT methods utilized specifically for concrete diagnosis, grouped into seven categories according to their main aim. Moreover, a summary of references to publications containing descriptions, applications, and case studies of each one is also presented.

Study of the influence of temperature and water level of the reservoir about the displacement of a concrete dam

Oro S. R., Mafioleti T. R., Chaves Neto A., Garcia S. R. P., Neumann C.

International Journal of Applied Mechanics and Engineering

2016

Vol. 21, no. 1

107--120

Multivariate techniques are used in this study to analyze the monitoring data displacements of a concrete dam, measured by means of pendulums, extensometer bases and multiple rod extensometers, taking into account the action of environmental conditions, bounded by the surface temperature of the concrete at ambient temperature and the tank water level. The canonical correlation analysis is used to evaluate the influence of environmental variables in the displacement of structures and dam foundations. The factor analysis is used to identify data sources of variability and order the sensors according to the action of factors. The dates of the measurements are grouped according to similarities in the present observations, by applying the cluster analysis. Then the discriminant analysis is used to assess the groups as to their homogeneity. The results demonstrate that the techniques used for distinguishing the dam responses and identify the effects of changes in environmental conditions on the displacements of the structures and dam foundations.