Engineered self-cleaning cementitious composites
US10882790B2 · kind B2 · utility
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5References
20Claims
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Key dates
| Filing date | Nov 3, 2015 |
| Grant date | Jan 5, 2021 |
| Priority date | — |
| Expiry date | Feb 12, 2036 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B2111/2061
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The present invention relates to a cementitous composite specifically engineered to possess self-cleaning abilities while maintaining their unique strain-hardening behaviour and the preparation of the said composite. The cementitious composite comprises a hydraulic cement, a plurality of fibers, in particular polyvinyl alcohol fibers wherein the ratio of the plurality of fibers to the hydraulic cement is in a range from 1 to 3% by volume; a self-cleaning agent, in particular nanoparticulate titanium dioxide (TiO2) wherein the weight ratio of the self-cleaning agent to the hydraulic cement is in a range from 0.01 to 1.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.