DEVICE AND METHOD FOR DETECTING DETERIORATED COMPONENT WITH OPTIONAL DEPTH IN CONCRETE STRUCTURE

摘要

PROBLEM TO BE SOLVED: To provide a device and a method capable of micro-destructively and easily analyzing a deteriorated component with an optional depth in a concrete structure in a short time to evaluate the deteriorated state in the structure.

SOLUTION: An analysis device of a deteriorated component in concrete structure is constituted with a device for irradiating near IR beam and spectroscopically analyzing its reflection light and a device for recording and analyzing them. Attention has been payed on that cement hydrate in concrete chemically changes with deterioration. From the near IR spectra of the concrete which was chemically analyzed, the wavelength group of near IR spectra which is closely correlated with the chemical analysis values in many kinds of deterioration is obtained to conduct multivariable analysis, and a calibration curve for computing the values of many kinds of deteriorated components from the near IR spectra data. By corresponding the near IR spectrum of the concrete where the value of the deteriorated component is unknown to the calibration curve, the value of the deteriorated component in the concrete is computed.

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