| 摘要 |
<P>PROBLEM TO BE SOLVED: To solve such problems of improvement in accuracy of the quality management at the site, such as a factory, a service station and a ready-mixed concrete plant, and specially achievement of a color difference meter for cement and a use method thereof in which identification of the kind of cement, determination of contamination of foreign matter, and concentration management of a mixture can be simply performed. <P>SOLUTION: A color difference meter for cement is provided which includes a detection part capable of detecting a light source including a wavelength region of 400 to 750 nm and light having the wavelength region of 400 to 750 nm, and a translucent sample cover part, and which is arranged by setting an angle between the irradiation direction of light emitted from a light source and with which a sample is irradiated through a sample cover and the mounting direction of a detection tube for detecting reflection light from the sample at 30 to 60 degrees. <P>COPYRIGHT: (C)2013,JPO&INPIT |
