Durable medium-density fibre cement composite
US7993570B2 · kind B2 · utility
2Cited by
952References
27Claims
0Family size
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Key dates
| Filing date | Oct 7, 2003 |
| Grant date | Aug 9, 2011 |
| Priority date | — |
| Expiry date | Mar 25, 2025 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02W30/91
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A cementitious product and method of modifying the properties of a low or medium density FRC product by providing a predetermined pore size distribution. The pore size distribution is obtained such that in critical zones of the distribution, the pore volume is substantially equivalent to or less than the pore volume in a respective critical zone of a conventional high density FRC product. The resultant material provides improved properties over conventional medium density FRC products, in particular improved freeze/thaw durability and/or improved workability.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.