| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Soriano, Lourdes
Universitat Politècnica de València
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (14/14 displayed)
- 2024Reusing Ceramic Waste as a Precursor in Alkali-Activated Cements: A Reviewcitations
- 2024Eco-Pozzolans as Raw Material for Sustainable Construction Industry: Comparative Evaluation of Reactivity Through Direct and Indirect Methods
- 2023Reusing Ceramic Waste as a Precursor in Alkali-Activated Cements: A Reviewcitations
- 2023Reusing Ceramic Waste as a Precursor in Alkali-Activated Cements: A Reviewcitations
- 2023Evaluation of Thermochemical Treatments for Rice Husk Ash Valorisation as a Source of Silica in Preparing Geopolymerscitations
- 2022Impedance Spectroscopy as a Methodology to Evaluate the Reactivity of Metakaolin Based Geopolymerscitations
- 2022Potential use of ceramic sanitary ware waste as pozzolanic material ; Uso potencial de residuos de cerámica sanitaria como material puzolánicocitations
- 2021Reutilisation of hazardous spent fluorescent lamps glass waste as supplementary cementitious materialcitations
- 2018The Compressive Strength and Microstructure of Alkali-Activated Binary Cements Developed by Combining Ceramic Sanitaryware with Fly Ash or Blast Furnace Slagcitations
- 2018Compressive strength and microstructure of alkali-activated mortars with high ceramic waste contentcitations
- 2018Influence of calcium additions on the compressive strength and microstructure of alkali-activated ceramic sanitary-warecitations
- 2018Compressive strength and microstructure of alkali-activated blast furnace slag/sewage sludge ash (GGBS/SSA) blends cured at room temperaturecitations
- 2018Influence of Addition of Fluid Catalytic Cracking Residue (FCC) and the SiO2 Concentration in Alkali-Activated Ceramic Sanitary-Ware (CSW) Binderscitations
- 2014Alkaline activation of ceramic waste materialscitations
Places of action
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article
Impedance Spectroscopy as a Methodology to Evaluate the Reactivity of Metakaolin Based Geopolymers
Abstract
<jats:p>The aim of this study was to use the electrical impedance spectroscopy technique (IS) to carry out a systematic study on the mechanism of metakaolin geopolymerization for up to 7 curing days. The study was developed on two batches of metakaolin (MK), and their reaction processes were compared. Interpretative fundamental elements were developed based on the effective electrical conductivity curves regarding the metakaolin geopolymerization. X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR) and scanning electron microscopy (SEM) were previously carried out and used to interpret and validate the electrical behavior of the fresh and hardened MK-based geopolymer pastes. The results highlighted the sensibility of the impedance technique to the identification and description of the MK geopolymerization process, as well as the changes resulting from even slight variations in the metakaolin composition. Furthermore, this indicated that the geopolymerization process in highly alkaline solutions could be divided into seven stages, including the processes of dissolution, nucleation, precipitation and formation of the gel and, eventually, the retraction/microcracks constitution. Late dissolution processes could be observed during the more advanced stages and were attributed to particles not being fully hydrated.</jats:p>