Physico-chemical efficiency of mineral additives of various compositions in cement systems

Management of the pore volume and the mineral-morphological state of the hardening system through the use of chemical and mineral additives introduced both separately and in complexes is considered to be one of the defining directions of cement system structure formation. Currently, the nomenclature...

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Bibliographic Details
Published in:Journal of physics. Conference series 2021-05, Vol.1926 (1), p.12068
Main Authors: Nizina, T A, Balykov, A S, Korovkin, D I, Volodin, V V
Format: Article
Language:English
Subjects:
Additives
Aluminosilicates
Aluminum silicates
Cement
Cement paste
Composition
Diatomaceous earth
Fly ash
Mechanical properties
Metakaolin
Physics
Silica fume
System effectiveness
Systems management
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Summary:Management of the pore volume and the mineral-morphological state of the hardening system through the use of chemical and mineral additives introduced both separately and in complexes is considered to be one of the defining directions of cement system structure formation. Currently, the nomenclature of mineral modifiers includes a wide list of materials of natural, artificial, and technogenic origin. The purpose of this study was to establish the influence regularities of mineral additives of various compositions (siliceous (microsilica, diatomite, opoka), aluminosilicate (metakaolin, fly ash), sulfoaluminate (expanding sulfoaluminate modifier), carbonate (microcalcite)) on the physical-mechanical properties of cement systems, with the identification of the most effective modifiers. According to the results of experimental studies, the influence of modifiers on the activity of the mixed cement binder, water demand, water-holding capacity and mobility of the cement paste was revealed. Condensed non-compacted microsilica, metakaolin and expanding sulfoaluminate modifier were selected as the most promising mineral additives.
ISSN:1742-6588
1742-6596
DOI:10.1088/1742-6596/1926/1/012068