| 摘要 |
PROBLEM TO BE SOLVED: To measure the amount of salt in cured concrete on the spot simply and inexpensively in a short time with high precision. SOLUTION: Powder and extracted water obtained by drilling a hole in cured concrete are put in a container and, after the resulting mixed solution is filled with carbon dioxide and foamed, the amount of salt in the supernatant water is measured. In this simple salt amount measuring method, a regression equation as the result due to the simple salt amount measuring method and a detailed salt amount measuring method is preliminarily calculated under set conditions of extracted water temperature/extraction time and the salt amount simple measuring result is multiplied by the coefficient of the regression equation to measure the amount of salt. COPYRIGHT: (C)2004,JPO&NCIPI
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