Geopolymers
Inorganic polymeric new materials
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Valentin Antonovič
Valentin Antonovič
Scientific Institute of Thermal Insulation, Vilniaus Gediminas Technical University, Linkmenų str. 28, 08217, Vilnius, Lithuania
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Marius Aleknevičius
Marius Aleknevičius
Scientific Institute of Thermal Insulation, Vilniaus Gediminas Technical University, Linkmenų str. 28, 08217, Vilnius, Lithuania
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Jadvyga Kerienė
Jadvyga Kerienė
Department of Chemistry and Bioengineering, Vilniaus Gediminas Technical University, Saulėtekio al. 11, 10223, Vilnius, Lithuania
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Ina Pundienė
Ina Pundienė
Scientific Institute of Thermal Insulation, Vilniaus Gediminas Technical University, Linkmenų str. 28, 08217, Vilnius, Lithuania
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Rimvydas Stonys
Rimvydas Stonys
Scientific Institute of Thermal Insulation, Vilniaus Gediminas Technical University, Linkmenų str. 28, 08217, Vilnius, Lithuania
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Abstract
The hydration of the binder, consisting of calcium aluminate cement (CAC) with Al2O3 >70% and with or without the additives of the FCC catalyst waste and polycarboxylate deflocculant Castament FS-20, is investigated. The methods of calorimetry, thermal analysis, XRD, electrical conductivity, SEM, as well as ultrasonic wave velocity measuring and bending strength evaluation are used. The results of the investigation show that the FCC catalyst as well as polycarboxylate deflocculant, are active additives, influencing the CAC binder's hydration process. In the structure of the hardened binders, certain amounts of unhydrated CAC minerals, CA, and CA2, and the hydration products, such as CAH10, C2AH8 and the amorphous AH3, are found. However, in the binder with a deflocculant, there are smaller amounts of CAH10 and the amorphous AH3, though the amount of C2AH8 is higher than that in the binder without a deflocculant additive. It has been found that in the case, when the FCC catalyst and deflocculant are simultaneously used, the FCC catalyst produces a positive effect on the formation of the CAC binder's structure, increasing its mechanical strength. The results obtained in this article allow to predict that the FCC catalyst and deflocculant simultaneously used as the additives to the CAC binder, will enable to control the hydration process of the binder.
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| Journal of Thermal Analysis and Calorimetry | |
|---|---|
| Language | English |
| Size | A4 |
| Year of Foundation |
1969 |
| Volumes per Year |
1 |
| Issues per Year |
24 |
| Founder | Akadémiai Kiadó |
| Founder's Address |
H-1117 Budapest, Hungary 1516 Budapest, PO Box 245. |
| Publisher | Akadémiai Kiadó Springer Nature Switzerland AG |
| Publisher's Address |
H-1117 Budapest, Hungary 1516 Budapest, PO Box 245. CH-6330 Cham, Switzerland Gewerbestrasse 11. |
| Responsible Publisher |
Chief Executive Officer, Akadémiai Kiadó |
| ISSN | 1388-6150 (Print) |
| ISSN | 1588-2926 (Online) |
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Temperature dependence of the rate of reaction in thermal analysis
The Arrhenius equation in condensed phase kinetics
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