Mixture for manufacture of shaped elements and its use
US4797161A · kind A · utility
51Cited by
2References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 26, 1987 |
| Grant date | Jan 10, 1989 |
| Priority date | — |
| Expiry date | May 26, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02W30/91
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The mixture for manufacture of shaped elements of fiber-cement, in addition to minimum 5% by weight of pozzuolanic silicic acid contains also an amount of limestone powder. With this mixture it is possible to obtain a product of high strength properties without tendency to embrittlement respectively to formation of cracks on the surface. In utilizing the mixture for manufacture of shaped elements the latter are moulded from a mixture of aqueous material and permitted to set at 70.degree. to 90.degree. C. during 5 to 12 hours preferably with simultaneous compression.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.