Concrete construction material and method adapted to prevent chemical corrosion of metals located adjacent thereto
US5171362A · kind A · utility
1Cited by
8References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 12, 1991 |
| Grant date | Dec 15, 1992 |
| Priority date | — |
| Expiry date | Jul 12, 2011 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B2111/26
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A construction material including a concrete body, a metallic material embedded within the concrete body, and an organophosphorus compound, such as an organic phosphonic acid or a salt thereof, dispersed within the concrete body. Chemical corrosion of pipes or the like metals extending from such a construction material into an environment which is less alkaline an the concrete body, such as soil, can be prevented by incorporation of the organic phosphorus material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.