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Effects of mechanical and thermal activation on pozzolanic activity of kaolin containing mica

Authorized Users Only
2016
Authors
Ilić, Biljana
Radonjanin, Vlastimir
Malešev, Mirjana
Zdujić, Miodrag
Mitrović, Aleksandra
Article (Published version)
Metadata
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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.

Keywords:
Thermal activation / Mechanical activation / Kaolin / Pozzolanic activity
Source:
Applied Clay Science, 2016, 123, 173-181
Publisher:
  • Elsevier
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
[ Google Scholar ]
63
60
Handle
https://hdl.handle.net/21.15107/rcub_dais_15976
URI
https://dais.sanu.ac.rs/123456789/15976
Collections
  • ИТН САНУ - Општа колекција / ITS SASA - General collection
Institution/Community
Институт техничких наука САНУ / Institute of Technical Sciences of SASA
TY  - JOUR
AU  - Ilić, Biljana
AU  - Radonjanin, Vlastimir
AU  - Malešev, Mirjana
AU  - Zdujić, Miodrag
AU  - Mitrović, Aleksandra
PY  - 2016
UR  - https://dais.sanu.ac.rs/123456789/15976
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
T2  - Applied Clay Science
T1  - Effects of mechanical and thermal activation on pozzolanic activity of kaolin containing mica
SP  - 173
EP  - 181
VL  - 123
DO  - 10.1016/j.clay.2016.01.029
UR  - https://hdl.handle.net/21.15107/rcub_dais_15976
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",
journal = "Applied Clay Science",
title = "Effects of mechanical and thermal activation on pozzolanic activity of kaolin containing mica",
pages = "173-181",
volume = "123",
doi = "10.1016/j.clay.2016.01.029",
url = "https://hdl.handle.net/21.15107/rcub_dais_15976"
}
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., 123, 173-181.
https://doi.org/10.1016/j.clay.2016.01.029
https://hdl.handle.net/21.15107/rcub_dais_15976
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
https://hdl.handle.net/21.15107/rcub_dais_15976 .
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 .,
https://hdl.handle.net/21.15107/rcub_dais_15976 .

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