Thin-film-transistor liquid-crystal display waste glass and nano-SiO2as substitute sources for metakaolin-based geopolymer
| Autor: | Hau-Shing Shiu, Ta-Wui Cheng, DeYing Wang, Bui Le Anh Tuan, Chao-Lung Hwang, Kang Gao, Kae-Long Lin |
|---|---|
| Rok vydání: | 2013 |
| Předmět: |
Thermogravimetric analysis
Environmental Engineering Materials science Silicon Renewable Energy Sustainability and the Environment General Chemical Engineering chemistry.chemical_element Amorphous solid Geopolymer chemistry Flexural strength Environmental Chemistry Thermal stability Composite material Porosity Waste Management and Disposal Metakaolin General Environmental Science Water Science and Technology |
| Zdroj: | Environmental Progress & Sustainable Energy. 33:947-955 |
| ISSN: | 1944-7442 |
| Popis: | Thin-film-transistor liquid-crystal display (TFT-LCD) waste glass can be used as a raw material in the production of geopolymer because of its amorphous and also contains relatively large amounts of silicon and aluminum. The effects of nano-SiO2 (NS) addition levels (0%–3%) with 1% increments and the geopolymer replacement levels of TFT-LCD waste glass (0%–40%) with 10% increments were analyzed quantitatively. The optimal geopolymer proportion was identified based on its mechanical characteristics and flexural strength. The geopolymer samples were also analyzed for changes in weight, and a thermogravimetric analyzer and 29Si magic-angle spinning nuclear magnetic resonance to measure the short-range network ordering. The results of this study indicated that the TFT-LCD waste glass metakaolin (TWGM) geopolymer sample with 10% TFT-LCD waste glass and 1% NS exhibited greater strength and lower porosity than other samples. Understanding these characteristics is necessary to identify the mechanical strength, thermal stability, and the fundamental structure of a geopolymer system. Applying NS to a geopolymer enhances its compactness, improves its uniformity, and increases its strength. These results show that 10% TFT-LCD waste glass and 1% NS can be used as a partial substitute for metakaolin (MK) in geopolymer materials. © 2013 American Institute of Chemical Engineers Environ Prog, 33: 947–955, 2014 |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Plný text