Preparation of concrete accelerator
US6692564B2 · kind B2 · utility
18Cited by
7References
13Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 6, 2002 |
| Grant date | Feb 17, 2004 |
| Priority date | — |
| Expiry date | Jun 6, 2022 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B2111/00146
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
An alkali-free accelerator for sprayed concrete is prepared by dissolving aluminium sulphate and amorphous aluminium hydroxide in water which optionally contains one amine, and optionally adding at least one stabiliser, selected from hydroxycarboxylic acid and phosphoric acids and non-alkaline salts thereof, and at least one defoaming agent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.