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https://open.uns.ac.rs/handle/123456789/4782
Назив: | Effects of mechanical and thermal activation on pozzolanic activity of kaolin containing mica | Аутори: | Ilić B. Radonjanin, Vlastimir Malešev, Mirjana Zdujić M. Mitrović, Aleksandra |
Датум издавања: | 1-апр-2016 | Часопис: | Applied Clay Science | Сажетак: | © 2016 Elsevier B.V. Kaolin from a Serbian deposit, characterized by high content of impurities, such as mica and quartz, disordered kaolinite and high specific surface area, was subjected to thermal and mechanical activation on a large scale. Activations were carried out with a goal to investigate the effects of applied methods on the chemical, structural and morphological changes that occurred in the kaolin, and their influence on the pozzolanic activity. The changes were monitored using XRD, FTIR, TG/DTA, PSD, BET and SEM analyses. Pozzolanic activity was evaluated by determination of the 7-day compressive strength conducted on the lime mortars.The results showed that mechanical activation by milling the kaolin for 20 h in the conventional horizontal ball mill was competitive for obtaining pozzolana as thermal activation. Pozzolanic activity of thermally activated kaolin was mainly influenced by formation of metakaolin. Combined effects (such as significant specific surface area increase, as well as partial kaolinite and complete mica phase amorphization) were dominant in pozzolanic activity of mechanically activated kaolin. | URI: | https://open.uns.ac.rs/handle/123456789/4782 | ISSN: | 1691317 | DOI: | 10.1016/j.clay.2016.01.029 |
Налази се у колекцијама: | FTN Publikacije/Publications |
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