Cementation slurries for improvedly encasing reinforcing elements therefor
US5814145A · kind A · utility
8Cited by
10References
6Claims
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Key dates
| Filing date | Mar 21, 1995 |
| Grant date | Sep 29, 1998 |
| Priority date | — |
| Expiry date | Mar 21, 2015 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B2111/70
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Cementation slurries well suited for encasing reinforcing elements therefor, for example prestressed steel cable, while reducing the risk of embrittlement thereof, contain from about 1.5% to 3% by weight of homogenizing and exudation-reducing hydrophilic particulates (e.g., precipitated silica particles) that are inert in respect of liquids, have a specific surface area of greater than about 200 m.sup.2 /g and which are fragmentable during mixing and/or injection into multiple fragments having particle sizes ranging from about 5 to 300 nanometers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.