| 摘要 |
PROBLEM TO BE SOLVED: To provide a method and an apparatus for the measurement of the percentage of moisture content of a fine aggregate, which are simple and easy and economically superior. SOLUTION: The method which measures the percentage of moisture content of the fine aggregate is composed of a process in which the fine aggregate and cement are 'kneaded dryly'. The method comprises a process, in which the lightness or the luminance of a mixed material of the cement and the fine aggregate which are dryly kneaded is measured and turned into a numerical value, and a process, in which the total moisture content of the fine aggregate is obtained, on the basis of correlational data between the numerical value regarding the mixed material of the cement and the fine aggregate and the percentage moisture content.
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