| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a method for preventing elution of hexa-valent chromium from cement containing hexa-valent chromium. SOLUTION: In a method for preventing elution of hexa-valent chromium from a hexa-valent chromium-containing solid solidified with cement, the cement is adjusted to have a >=70 wt.% total amount of C3S and C3A in the cement and 25-80 pts.wt. slag is mixed to 100 pts.wt. cement to be resultantly solidified. Thereby, elution of hexa-valent chromium from the solidified solid can be prevented.</p> |
