Effects of mechanical and thermal activation on pozzolanic activity of kaolin containing mica
Abstract
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 pa...rtial kaolinite and complete mica phase amorphization) were dominant in pozzolanic activity of mechanically activated kaolin.
Keywords:
Thermal activation / Pozzolanic activity / Mechanical activation / KaolinSource:
Applied Clay Science, 2016, 123, 173-181Publisher:
- Elsevier Science Bv, Amsterdam
Funding / projects:
- Utilization of by-products and recycled waste materials in concrete composites in the scope of sustainable construction development in Serbia: investigation and environmental assessment of possible applications (RS-36017)
- Nanostructured Functional and Composite Materials in Catalytic and Sorption Processes (RS-45001)
DOI: 10.1016/j.clay.2016.01.029
ISSN: 0169-1317
WoS: 000372759500021
Scopus: 2-s2.0-84960940518
Collections
Institution/Community
Institut za ispitivanje materijalaTY - JOUR AU - Ilić, Biljana AU - Radonjanin, Vlastimir AU - Malešev, Mirjana AU - Zdujić, Miodrag AU - Mitrović, Aleksandra PY - 2016 UR - http://rims.institutims.rs/handle/123456789/297 AB - 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. PB - Elsevier Science Bv, Amsterdam T2 - Applied Clay Science T1 - Effects of mechanical and thermal activation on pozzolanic activity of kaolin containing mica EP - 181 SP - 173 VL - 123 DO - 10.1016/j.clay.2016.01.029 ER -
@article{ author = "Ilić, Biljana and Radonjanin, Vlastimir and Malešev, Mirjana and Zdujić, Miodrag and Mitrović, Aleksandra", year = "2016", abstract = "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.", publisher = "Elsevier Science Bv, Amsterdam", journal = "Applied Clay Science", title = "Effects of mechanical and thermal activation on pozzolanic activity of kaolin containing mica", pages = "181-173", volume = "123", doi = "10.1016/j.clay.2016.01.029" }
Ilić, B., Radonjanin, V., Malešev, M., Zdujić, M.,& Mitrović, A.. (2016). Effects of mechanical and thermal activation on pozzolanic activity of kaolin containing mica. in Applied Clay Science Elsevier Science Bv, Amsterdam., 123, 173-181. https://doi.org/10.1016/j.clay.2016.01.029
Ilić B, Radonjanin V, Malešev M, Zdujić M, Mitrović A. Effects of mechanical and thermal activation on pozzolanic activity of kaolin containing mica. in Applied Clay Science. 2016;123:173-181. doi:10.1016/j.clay.2016.01.029 .
Ilić, Biljana, Radonjanin, Vlastimir, Malešev, Mirjana, Zdujić, Miodrag, Mitrović, Aleksandra, "Effects of mechanical and thermal activation on pozzolanic activity of kaolin containing mica" in Applied Clay Science, 123 (2016):173-181, https://doi.org/10.1016/j.clay.2016.01.029 . .
Related items
Showing items related by title, author, creator and subject.
-
Compressive strength and microstructure of ordinary cured and autoclaved cement-based composites with mechanically activated kaolins
Ilić, Biljana; Mitrović, Aleksandra; Miličić, Ljiljana; Zdujić, Miodrag (Elsevier Sci Ltd, Oxford, 2018) -
Energy conversion in phosphate ore grain mixture activated via ultra-centrifugal mill
Andrić, Ljubiša; Terzić, Anja; Petrov, Milan; Stojanović, Jovica; Kostović, Milena (Elsevier, Amsterdam, 2015) -
Proučavanje međudejstva anjonskih i katjonskih glina pri aktivaciji montmorilonita / Study of anionic and cationic clay interaction during activation of montmorillonite
Radojević, Zagorka (Udruženje inženjera građevinarstva, geotehnike, arhitekture i urbanista "Izgradnja", Beograd, 2008)