Device and method for reinforcing weathered stone relics by using low temperature plasma to activate calcium hydroxide in carbon dioxide atmosphere
US11685698B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 29, 2020 |
| Grant date | Jun 27, 2023 |
| Priority date | — |
| Expiry date | May 31, 2041 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B41/4558
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The invention provides a device and a method for reinforcing weathered stone relics by using low temperature plasma to activate calcium hydroxide in a carbon dioxide atmosphere. Based on the low temperature plasma physics and the principles of the relics conservation, the invention applies the technology of low temperature plasma to relics conservation, and especially to the reinforcement of weathered stone relics by activating calcium hydroxide. According to the application, using low temperature plasma source loaded with carbon dioxide to active calcium hydroxide can realize the carbonation and precipitation of calcium hydroxide within 1 min-2 min, and reinforce the weathered stone relics. The application has the advantages of safety, high efficiency, non-damage, and no side effects.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.