Process for increasing the ductility of high performance fiber-reinforced brittle matrix composites, and composites produced thereby
US7169224B2 · kind B2 · utility
6Cited by
9References
35Claims
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Key dates
| Filing date | Apr 30, 2004 |
| Grant date | Jan 30, 2007 |
| Priority date | — |
| Expiry date | May 25, 2024 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B28/02
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Purposeful addition of crack-initiating voids in the form of low tensile strength particulates, particulates having low matrix interaction, or gas bubbles formed by chemical reaction, in a size range of 0.5 mm to about 5 mm, and preferably of a size commensurate with or larger than naturally occurring crack-initiating gaseous voids, to fiber-reinforced strain hardening cementitious composites generates controlled and uniform cracking which increases strain hardening behavior in conventionally dense cementitious compositions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.