| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a water-blocking filler, the swelling properties of which do not decrease easily even when in contact with water containing calcium ions, and a filler for manmade multi-barriers with the water-blocking filler as the manmade multi-barrier filler. <P>SOLUTION: The water-blocking filler mainly comprises sodium bentonite and is obtained by mixing ≤30 wt.%, in terms of inner percentage, of a pozzolan substance such as fly ash or silica fume with the bentonite. The filler for manmade multi-barriers using the water-blocking filler is used for manmade multi-barriers in radioactive waste disposal facilities. <P>COPYRIGHT: (C)2013,JPO&INPIT |
