Hardening accelerator composition for cementitious compositions
US9650298B2 · kind B2 · utility
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27References
21Claims
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Key dates
| Filing date | Aug 12, 2013 |
| Grant date | May 16, 2017 |
| Priority date | — |
| Expiry date | Sep 8, 2033 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B2103/14
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The invention concerns a process for the for the preparation of a hardening accelerator composition by reaction of a water-soluble calcium compound with a water-soluble silicate compound, the reaction being carried out in the presence of an aqueous solution which contains a plasticizer suitable for hydraulic binders, characterized in that said reaction is being carried out in the presence of apatite and that the molar ratio of calcium to phosphor in the hardening accelerator is from 25/1 to 400/1.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.