Lactate activated cement and activator compositions
US8349072B2 · kind B2 · utility
4Cited by
12References
27Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 11, 2011 |
| Grant date | Jan 8, 2013 |
| Priority date | — |
| Expiry date | Jan 11, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02W30/91
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Cementitious compositions in which the cementitious properties of fly ash are carefully controlled are described. The cementitious compositions may be substantially free harsh acids and bases such as citric acids (≈pH 2.2) and alkali metal activators including alkali hydroxides (≈pH 12-14) and metal carbonates (≈pH 11.6). The use of these harsh chemicals creates acid base reactions during use of the products. Instead of these harsh chemicals, a lactic acid salt based activator is be used as a reaction accelerator. Boric compounds may be used as a retarder in the compositions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.