Ground impregnating process
US4851259A · kind A · utility
2Cited by
6References
3Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Jun 19, 1987 |
| Grant date | Jul 25, 1989 |
| Priority date | — |
| Expiry date | Jun 19, 2007 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B2111/00732
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A ground impregnation process which is disclosed herein comprises injecting an alkaline ground impregnating material, with carbon dioxide gas passed through blowing nozzles joining said impregnating material, into a ground. In this process, the pressure of carbon dioxide and the opening size of the blowing nozzle are determined to provide a constant amount of carbon dioxide gas blown, irrespective of a variation in ground pressure. In this manner, the carbon dioxide gas joins the alkaline ground impregnating material at a given ratio.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.