Process for producing a fire-resistant, light-weight construction material
US4812169A · kind A · utility
4Cited by
3References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 9, 1987 |
| Grant date | Mar 14, 1989 |
| Priority date | — |
| Expiry date | Jun 9, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02W30/91
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A fire-resistant, light weight construction material is prepared by subjecting fly ash and/or paper sludge incineration ash to a swelling treatment with a mineral acid to prepare a slurry; and kneading, shaping and hardening the slurry.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.