Cements and concretes which contain them
US4111711A · kind A · utility
34Cited by
1References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 18, 1977 |
| Grant date | Sep 5, 1978 |
| Priority date | — |
| Expiry date | Jul 18, 1997 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B28/06
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The invention is directed to a cement composition comprising (1) 10-30% of an alkaline-earth mineral substance such as a slag or cement having a base of calcium aluminate or a calcined alkaline-earth oxide, (b) 14-56% of a constituent of a grain size of 100 A to 0.1 micron selected from silica, chromium oxide, TiO.sub.2, ZrO.sub.2 and Al.sub.2 O.sub.3, and (c) 14-56% of an inert filler of a grain size from 1 to 100 microns, the sum of (b) + (c) representing from 70 to 90% of the cement. Concrete mixtures which employ the inventive cements display superior properties.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.