Cementitious gypsum-containing compositions and materials made therefrom
US5685903A · kind A · utility
60Cited by
12References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 13, 1996 |
| Grant date | Nov 11, 1997 |
| Priority date | — |
| Expiry date | Sep 13, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02W30/91
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A cementitious composition useful for water-resistant construction materials, including floor underlayments, backing boards, self-leveling floor materials, road patching materials, fiberboard, fire-proofing sprays, and fire-stopping materials includes about 20 wt. % to about 75 wt. % calcium sulfate beta-hemihydrate, about 10 wt. % to about 50 wt. % Portland cement, about 4 wt. % to about 20 wt. % silica fume and about 1 wt. % to about 50 wt. % pozzolanic aggregate. The Portland cement component may also be a blend of Portland cement with fly ash and/or ground blast slag.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.