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

Ilić, Biljana; Radonjanin, Vlastimir; Malešev, Mirjana; Zdujić, Miodrag; Mitrović, Aleksandra

doi:10.1016/j.clay.2016.01.029

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2016

Authors

Ilić, Biljana

Radonjanin, Vlastimir

Malešev, Mirjana

Zdujić, Miodrag

Mitrović, Aleksandra

Article (Published version)

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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...

Keywords:

Thermal activation / Mechanical activation / Kaolin / Pozzolanic activity

Source:
Applied Clay Science, 2016, 123, 173-181

Publisher:

Elsevier

Funding / projects:

DOI: 10.1016/j.clay.2016.01.029

ISSN: 0169-1317

WoS: 000372759500021

Scopus: 2-s2.0-84960940518

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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 .