| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an environmental improvement cement composition which solidifies and seals environmental pollution soil containing heavy metals and organic chlorine compounds. <P>SOLUTION: The environmental improvement cement composition contains, as essential components, magnesia of 70 to 155 pts.wt., phosphate of 5 to 30 pts.wt. (wherein, a phosphate chelating agent of 1 to 50 pts.wt. is included), activated carbon of 5 to 30 pts.wt., and organic acid of 0.2 to 2.0 pts.wt. <P>COPYRIGHT: (C)2003,JPO</p> |
