A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Alkali Activation of Russian Calcined Medium-Grade Clay: Influence of NaOH Concentration
https://orcid.org/http://orcid.org/0000-0003-1735-1758
The object of this study was to investigate how 5–14 M NaOH concentrations affect the mechanical properties, amorphous-crystalline phase transformations, and composition of the reaction product of alkali-activated calcined kaolinite/montmorillonite cement with reactive phases of 48%, and with the SiO2/Al2O3 ratio 1.62. The hardened pastes based on calcined clays showed the highest compressive strength following their activation with 8 M NaOH. The zeolite content in the alkali-activated calcined clay cements peaked at 11 M NaOH, and the corresponding Na2O/SiO2 and Na2O/Al2O3 molar ratios were 0.6 and 0.93, respectively. The main reaction products in the studied alkali-activated calcined clay cements were N-A-S-H, zeolite A, faujasite-Na, analcime, and sodium aluminium silicate hydrate. The obtained properties and reaction products facilitate the use of the proposed alkali-activated calcined clay materials for controlled low-strength materials, matrices for immobilization of radioactive wastes.
Alkali Activation of Russian Calcined Medium-Grade Clay: Influence of NaOH Concentration
https://orcid.org/http://orcid.org/0000-0003-1735-1758
The object of this study was to investigate how 5–14 M NaOH concentrations affect the mechanical properties, amorphous-crystalline phase transformations, and composition of the reaction product of alkali-activated calcined kaolinite/montmorillonite cement with reactive phases of 48%, and with the SiO2/Al2O3 ratio 1.62. The hardened pastes based on calcined clays showed the highest compressive strength following their activation with 8 M NaOH. The zeolite content in the alkali-activated calcined clay cements peaked at 11 M NaOH, and the corresponding Na2O/SiO2 and Na2O/Al2O3 molar ratios were 0.6 and 0.93, respectively. The main reaction products in the studied alkali-activated calcined clay cements were N-A-S-H, zeolite A, faujasite-Na, analcime, and sodium aluminium silicate hydrate. The obtained properties and reaction products facilitate the use of the proposed alkali-activated calcined clay materials for controlled low-strength materials, matrices for immobilization of radioactive wastes.
Alkali Activation of Russian Calcined Medium-Grade Clay: Influence of NaOH Concentration
https://orcid.org/http://orcid.org/0000-0003-1735-1758
The object of this study was to investigate how 5–14 M NaOH concentrations affect the mechanical properties, amorphous-crystalline phase transformations, and composition of the reaction product of alkali-activated calcined kaolinite/montmorillonite cement with reactive phases of 48%, and with the SiO2/Al2O3 ratio 1.62. The hardened pastes based on calcined clays showed the highest compressive strength following their activation with 8 M NaOH. The zeolite content in the alkali-activated calcined clay cements peaked at 11 M NaOH, and the corresponding Na2O/SiO2 and Na2O/Al2O3 molar ratios were 0.6 and 0.93, respectively. The main reaction products in the studied alkali-activated calcined clay cements were N-A-S-H, zeolite A, faujasite-Na, analcime, and sodium aluminium silicate hydrate. The obtained properties and reaction products facilitate the use of the proposed alkali-activated calcined clay materials for controlled low-strength materials, matrices for immobilization of radioactive wastes.
Alkali Activation of Russian Calcined Medium-Grade Clay: Influence of NaOH Concentration
Lecture Notes in Civil Engineering
Vatin, Nikolai (editor) / Rakhimova, Nailia (author) / Morozov, Vladimir (author) / Eskin, Aleksey (author)
International Scientific Conference on Socio-Technical Construction and Civil Engineering ; 2021 ; Kazan, Russia
2021-06-29
9 pages
Article/Chapter (Book)
Electronic Resource
English
| Taylor & Francis Verlag | 2021
Influence of calcined medium grade clay on the properties of Portland cement pastes
| Taylor & Francis Verlag | 2022
Alkali activation of mechanically activated low-grade clay
| Taylor & Francis Verlag | 2021
Evaluation of Calcined Clay Lightweight Aggregates Made with Alkali Activators
| Trans Tech Publications | 2015