Porous material and cementitious compositions prepared therefrom
US6248166A · kind A · utility
27Cited by
5References
15Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 10, 1999 |
| Grant date | Jun 19, 2001 |
| Priority date | — |
| Expiry date | Nov 10, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2993
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A method of treating a shell sand by heating it to 300.degree. C. maximum for a time sufficient to remove substantially all of the water and organic content while maintaining substantially all of the inherent porosity of the shell sand. Generally, the time required varies between 10 minutes maximum at 300.degree. C. to about 1 hour at 95.degree. C. The resulting material is useful in cementitious compositions, particularly mortars, these being characterised by a high flexibility and an exceptionally high degree of resistance to fire or heat.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.