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- E-ISSN 2288-8985
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A identification of sprayed fire-resistive materials by near-infrared spectroscopy
Analytical Science and Technology / Analytical Science and Technology, (P)1225-0163; (E)2288-8985
2011, v.24 no.2, pp.85-93
https://doi.org/10.5806/AST.2011.24.2.085
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(2011). A identification of sprayed fire-resistive materials by near-infrared spectroscopy. Analytical Science and Technology, 24(2), 85-93, https://doi.org/10.5806/AST.2011.24.2.085
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Abstract
To protect the steel structure in a high story buildings from fire, the sprayed fire-resistive materials are applied during the construction. Current standard methods to check the quality of sprayed fire-resistive materials are real fire test in lab, which take a long time (several weeks) and expensive. In this study, a simple analytical method to check the quality of sprayed fire-resistive materials is developed using Near Infrared Spectroscopy (NIR). Total 9 kinds of sprayed fire-resisted materials and 3 kinds of normal sprayed material sets were used for the analysis. Each set of materials was 50 to 100 samples. Samples are grinded and make a fine powder. The spectral data acquisition was carried out using FT-NIR spectrometer with a integrating sphere. NIR methods successfully identify the sprayed fire resistive materials by a principle component analysis (PCA)after a vector normalization (SNV) pretreatment.
- keywords
- NIR spectrometer, FT-NIR, Fire-resistive materials, PCA
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