Curing Assessment of Concrete with Hyperspectral Imaging

The curing of concrete significantly influences the hydration process and its strength development. Inadequate curing leads to a loss of quality and has a negative effect on the durability of the concrete. Usually, the effects are not noticed until years later, when the first damage to the structure...

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Bibliographic Details
Published in:Materials 2021-07, Vol.14 (14), p.3848
Main Authors: Ptacek, Lisa, Strauss, Alfred, Hinterstoisser, Barbara, Zitek, Andreas
Format: Article
Language:English
Subjects:
Cameras
Chronology
Cluster analysis
Clustering
Composite materials
Concrete curing
Curing
Data analysis
Evaluation
Hydration
Hyperspectral imaging
Infrared signatures
Investigations
Laboratory tests
Life sciences
Material properties
Measurement methods
Near infrared radiation
Noise
Nondestructive testing
Software
Spectral signatures
Vector quantization
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Summary:The curing of concrete significantly influences the hydration process and its strength development. Inadequate curing leads to a loss of quality and has a negative effect on the durability of the concrete. Usually, the effects are not noticed until years later, when the first damage to the structure occurs because of the poor concrete quality. This paper presents a non-destructive measurement method for the determination of the curing quality of young concrete. Hyperspectral imaging in the near infrared is a contactless method that provides information about material properties in an electromagnetic wavelength range that cannot be seen with the human eye. Laboratory tests were carried out with samples with three different curing types at the age of 1, 7, and 27 days. The results showed that differences in the near infrared spectral signatures can be determined depending on the age of the concrete and the type of curing. The data was classified and analyzed by evaluating the results using k-means clustering. This method showed a high level of reliability for the differentiation between the different curing types and concrete ages. A recommendation for hyperspectral measurement and the evaluation of the curing quality of concrete could be made.
ISSN:1996-1944
1996-1944
DOI:10.3390/ma14143848