| 摘要 |
PROBLEM TO BE SOLVED: To provide a composition estimation method of a concrete hardened body capable of estimating composition accurately even in the case of the concrete hardened body including a limestone aggregate, fly ash or the like, and estimating the composition by a simple operation. SOLUTION: In this composition estimation method of the concrete hardened body, a multi-valued image of the concrete hardened body is subjected to binarization processing by using a threshold for aggregate amount estimation, and an estimation value of a unit aggregate amount is calculated based on expression (1) from an aggregate area ratio calculated from an acquired binarization-processed image. In the expression (1), V<SB>agg</SB>is the 'aggregate area ratio (%)'. COPYRIGHT: (C)2011,JPO&INPIT |
