发明名称 |
Water-blocking filler and filler for engineered multi-barriers using said water-blocking filler |
摘要 |
Provided are 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 engineered multi-barriers with said water-blocking filler as the engineered multi-barrier filler. A water-blocking filler mainly comprising sodium bentonite obtained by mixing 30 weight % or less, in terms of inner percentage, of a pozzolan substance such as fly ash or silica fume with said bentonite, and a filler using said water-blocking filler that is used for engineered multi-barriers in radioactive waste disposal facilities. |
申请公布号 |
US9446380(B2) |
申请公布日期 |
2016.09.20 |
申请号 |
US201114112076 |
申请日期 |
2011.10.26 |
申请人 |
GUNMA UNIVERSITY;DC CO., LTD. |
发明人 |
Nakarai Kenichiro;Koibuchi Kiyoshi;Nito Nobukazu |
分类号 |
B01J20/12;G21F9/34;G21F9/36;B09B3/00;G21F9/16 |
主分类号 |
B01J20/12 |
代理机构 |
Pearne & Gordon LLP |
代理人 |
Pearne & Gordon LLP |
主权项 |
1. A water-blocking filler mainly comprising sodium type bentonite, wherein more than 1 to 3% by weight or less of silica fume as a pozzolan substance in terms of a percentage by weight relative to a total amount of said sodium type bentonite is mixed with said sodium type bentonite. |
地址 |
Gunma JP |