Rice hull ash concrete admixture
US4829107A · kind A · utility
50Cited by
2References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 24, 1988 |
| Grant date | May 9, 1989 |
| Priority date | — |
| Expiry date | Feb 24, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02W30/91
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A cement admixture and cement composition containing said admixture comprising finely ground rice hull ash formed by slurry grinding of said ash to a volume medium particle diameter or up to 4 micrometers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.