Cement composition
US6036768A · kind A · utility
6Cited by
1References
33Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 29, 1998 |
| Grant date | Mar 14, 2000 |
| Priority date | — |
| Expiry date | Jul 29, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S106/01
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The cement composition of this invention includes 10 to 35% by weight of portland cement, 65 to 90% by weight of a synthetic pozzolan, and an activator for reducing the positive surface potential of the synthetic pozzolan. The synthetic pozzolan is obtained by an at least partial reduction from combustion residues having a SiO.sub.2 /CaO ratio of greater than 1:1 and containing Na.sub.2 O and K.sub.2 O as alkali oxides in an amount exceeding 1.5% by weight. The activator includes anionically active or anionic tensides.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.