Title:
METHOD FOR MEASURING CONCRETE
Document Type and Number:
WIPO Patent Application WO/2017/110853
Kind Code:
A1
Abstract:
Provided is a method for measuring concrete, the method allowing measurement of the deterioration of concrete to be conveniently performed without using a spectrometer, while maintaining the estimation accuracy. In the method for measuring concrete according to the present invention, irradiated light (P) containing a near infrared wavelength region relevant to the measurement of concrete (2) is emitted toward the concrete (2) and reflected light (P') from the irradiated light P is received from the concrete (2). For the neutralization-related calcium hydroxide and the chloride damage-related chloride ion, at least 5 or more wavelengths λ1 to λ5 and λ6 to λ10 different from each other are respectively identified in the wavelength range of 900 nm to 2500 nm in the absorption spectrum by PLS regression analysis, and the neutralization by calcium hydroxide and the chloride ion concentration are estimated.
Inventors:
KUMAGAI KAORU (JP)
AKIYAMA SHUGO (JP)
HANYA ISSEI (JP)
ZHAO PENG (JP)
FUNAHASHI MASASHI (JP)
NAKAJIMA YOSHIMITSU (JP)
SHIRANE YUJI (JP)
AKIYAMA SHUGO (JP)
HANYA ISSEI (JP)
ZHAO PENG (JP)
FUNAHASHI MASASHI (JP)
NAKAJIMA YOSHIMITSU (JP)
SHIRANE YUJI (JP)
Application Number:
PCT/JP2016/088055
Publication Date:
June 29, 2017
Filing Date:
December 21, 2016
Export Citation:
Assignee:
TOPCON CORP (JP)
MAEDA CONSTRUCTION (JP)
MAEDA CONSTRUCTION (JP)
International Classes:
G01N21/359
Domestic Patent References:
| WO2010046968A1 | 2010-04-29 |
Foreign References:
| JP5031281B2 | 2012-09-19 | |||
| JP2011214940A | 2011-10-27 | |||
| JP2008122412A | 2008-05-29 | |||
| JPH05273125A | 1993-10-22 |
Attorney, Agent or Firm:
CREO LAW & INTELLECTUAL PROPERTY (JP)
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