Biomass fly ash and aluminium industry slags-based geopolymers
| Autor: | J.Mª. Rincón-López, Dolores Eliche-Quesada, E. Castro-Galiano, Pedro José Sánchez-Soto, E. Bonet-Martínez, Luis Pérez-Villarejo |
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| Přispěvatelé: | Caja Rural de Jaén, Universidad de Jaén |
| Rok vydání: | 2018 |
| Předmět: |
Materials science
Mechanical Engineering Potassium Geopolymers Metallurgy Alkali-activation 0211 other engineering and technologies chemistry.chemical_element 02 engineering and technology 021001 nanoscience & nanotechnology Condensed Matter Physics Microstructure Amorphous solid Aluminium industry slag Geopolymer chemistry Mechanics of Materials Biomass fly-ash Fly ash 021105 building & construction General Materials Science Fourier transform infrared spectroscopy 0210 nano-technology Curing (chemistry) Metakaolin |
| Zdroj: | Digital.CSIC. Repositorio Institucional del CSIC instname |
| Popis: | Geopolymers are a new class of non-Portland cements produced using an alumino-silicate material and an activating solution, which is mainly composed of sodium or potassium and waterglass to be subsequently cured at relatively low temperatures. Those can be formulated by adding natural minerals, waste and/or industrial by-products. The study investigates the microstructural properties of geopolymers synthesized from metakaolin (MK) and the admixture of fly ash (FBA) and aluminium industry slags (AIS) at different ages of curing. Five different geopolymer compositions were prepared and characterized by XRD, ATR-FTIR and SEM/EDS. The study revealed that geopolymeric gels are identified, which show mainly glassy microstructures, in agreement with the X-ray amorphous diffraction patterns, broad FTIR features and confirmed by SEM/EDS, with promising results prior to an industrial scale. This work has been funded by the Project “Valuation of various types of ash for the obtaining of new sustainable ceramic materials” (UJA2014/06/13), Own Plan University of Jaen, sponsored by Caja Rural of Jaén. |
| Databáze: | OpenAIRE |
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