Development of alkali activated ceramic residue and fly ash blends
| Autor: | D. D. Leitao, Tiago F. S. Miranda, Norma Gaibor, Nuno Cristelo |
|---|---|
| Přispěvatelé: | Universidade do Minho |
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
010302 applied physics
Materials science Scanning electron microscope Uniaxial compression Sodium silicate 02 engineering and technology Fly ash 021001 nanoscience & nanotechnology 01 natural sciences chemistry.chemical_compound Residue (chemistry) chemistry Chemical engineering visual_art 0103 physical sciences Alkali activated visual_art.visual_art_medium Ceramic Fourier transform infrared spectroscopy 0210 nano-technology Alkali activated ceramic residue |
| Zdroj: | Wastes: Solutions, Treatments and Opportunities III ISBN: 9780429289798 |
| Popis: | Environmental concerns are becoming increasingly more significant worldwide, framing a scenario that points to the urgent development of new and sustainable alternatives for the industrial sector. The present study assesses the possible contribution of ceramic residue (CR) for alternative binders, for applications in the construction industry. The behavior of the CR alone in alkaline activated systems was initially tested, followed by a combination with a well-known precursor, fly ash (FA), considering different CR/FA weight ratios. Mechanical and microstructural analysis was conducted, including uniaxial compression strength (UCS) tests, Scanning Electron Microscopy (SEM), X-ray Energy Dispersive Analyzer (EDX), X-ray dif-fraction (XRD) and Fourier Transform Infrared Spectroscopy (FTIR). Results obtained showed that the most effective blend was a CR+FA combination, activated with sodium silicate, reach-ing UCS values higher than 20 MPa, after 90 days of ambient curing. (undefined) |
| Databáze: | OpenAIRE |
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