| 发明名称 |
Underground filling and sealing method |
| 摘要 |
The present invention is directed to a method for filling and sealing underground voids and the like with use of a grout comprising aggregate coated with a water-activated expanded hydrophobic polymeric resin, such as polyurethane.
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| 申请公布号 |
US7806631(B2) |
申请公布日期 |
2010.10.05 |
| 申请号 |
US20070787629 |
申请日期 |
2007.04.17 |
| 申请人 |
SMITH ERIC W;LIBENGOOD HOMER D |
发明人 |
SMITH ERIC W.;LIBENGOOD HOMER D. |
| 分类号 |
E02D3/12 |
主分类号 |
E02D3/12 |
| 代理机构 |
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