Application of Near-infrared Spectral Imaging for Componential
Analysis of Concrete
By H. Kanada, Y. Ishikawa and T. Uomoto
Concrete Journal, Vol.44, No.4, Apr. 2006
- Synopsis
- Recently, the authors have developed a new non-destructive inspection method for concrete structures using near-infrared [NIR] spectroscopic technique. Since typical spectrometer can measure only spectral information of one point, a new near-infrared spectral imaging system was assembled to scan a large area using equipment already available. Clear spectral images can be captures due to improvement of performance. This enables us to scan distribution or concentration of deleterious substances two-dimensionally. Availability of this system for inspection of deteriorated concrete has been corroborated by experimental results. This paper describes how to obtain distribution of deleterious substances of concrete from spectral image, and introduces test results.
- Keywords:
- remote and non-destructive inspection method, near-infrared spectral imaging, difference spectrum, EPMA
