Improving the properties of geopolymer containing oil-contaminated clay, metakaolin, and blast furnace slag by applying nano-SiO2
| Autor: | Huan-Lin Luo, Deng-Fong Lin, Shih-Chieh Chen |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Materials science
Silicon Scanning electron microscope Metallurgy technology industry and agriculture 0211 other engineering and technologies chemistry.chemical_element 02 engineering and technology General Medicine 021001 nanoscience & nanotechnology Microstructure law.invention Geopolymer Compressive strength chemistry law Ground granulated blast-furnace slag 021105 building & construction Environmental Chemistry Calcination 0210 nano-technology Waste Management and Disposal Metakaolin Water Science and Technology |
| Zdroj: | Environmental Technology. 38:1619-1628 |
| ISSN: | 1479-487X 0959-3330 |
| DOI: | 10.1080/09593330.2017.1293163 |
| Popis: | In this study, geopolymer specimens based on calcined oil-contaminated clays (OCCs), metakaolin replacements of OCCs, and blast furnace slag were manufactured by the addition of nano-SiO2 to improve their properties. The effects of adding 0, 1, 2, or 3% nano-SiO2 on the properties and microstructures of the geopolymer specimens were determined using compressive strength tests, flow tests, setting time tests, scanning electron microscopy (SEM), and silicon nuclear magnetic resonance spectroscopy (Si-NMR). The results showed that the setting time and flowability of the geopolymer specimens decreased and the compressive strength increased as the amount of nano-SiO2 increased. These results were supported by the SEM and Si-NMR assays. This study suggests that the addition of nano-SiO2 was beneficial and improved the properties of the geopolymer specimens containing calcined OCC. |
| Databáze: | OpenAIRE |
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