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Properties of the cement-based composites with high content of metakaolin

Authorized Users Only
2018
Authors
Ilić, Biljana
Radonjanin, Vlastimir
Malešev, Mirjana
Zdujić, Miodrag
Mitrović, Aleksandra
Conference object (Published version)
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Abstract
Environmental concerns and sustainable development require increased replacement of cement. Most of previous studies have shown that the compressive strength of cement-based composites is maximized with a 20% content of metakaolin. We investigated composites prepared by replacing ordinary Portland Cement (OPC) with 30 to 50% of metakaolin (MK) and addition of appropriate amount of hydrated lime, which were ordinary cured for 2, 28 or 90 days. Hydration products and microstructure of the pastes were determined by X-ray diffraction (XRD), differential thermal analysis/thermal gravimetry (DTA/TG) and mercury intrusion porosimetry (MIP). MK was produced by calcination of kaolin from a Serbian deposit, which contained a high level of impurities. Replacement of OPC with 30% of MK achieved 28 days compressive strength equivalent to that of the control mix. Higher replacement levels, 40% and 50%, combined with the addition of hydrated lime, achieved satisfactory relative strengths of 94% an...d 87%, respectively. The positive contribution was particularly pronounced after 90 days for a composite containing 50% of MK. The results clearly showed a possibility of obtaining composites having acceptable compressive strength with reduced cement content in accordance with environmental and sustained development requirements.

Keywords:
metakaolin / hydrated lime / cement-based composites / compressive strength
Source:
Calcined Clays for Sustainable Concrete: Proceedings of the 2nd International Conference on Calcined Clays for Sustainable Concrete, 2018
Publisher:
  • Dordrecht : Springer
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: 10.1007/978-94-024-1207-9_35

ISBN: 978-94-024-1207-9

WoS: 000454341000035

Scopus: 2-s2.0-85033677395
[ Google Scholar ]
1
1
Handle
https://hdl.handle.net/21.15107/rcub_dais_2375
URI
https://dais.sanu.ac.rs/123456789/2375
Collections
  • ИТН САНУ - Општа колекција / ITS SASA - General collection
Institution/Community
Институт техничких наука САНУ / Institute of Technical Sciences of SASA
TY  - CONF
AU  - Ilić, Biljana
AU  - Radonjanin, Vlastimir
AU  - Malešev, Mirjana
AU  - Zdujić, Miodrag
AU  - Mitrović, Aleksandra
PY  - 2018
UR  - https://dais.sanu.ac.rs/123456789/2375
AB  - Environmental concerns and sustainable development require increased replacement of cement. Most of previous studies have shown that the compressive strength of cement-based composites is maximized with a 20% content of metakaolin. We investigated composites prepared by replacing ordinary Portland Cement (OPC) with 30 to 50% of metakaolin (MK) and addition of appropriate amount of hydrated lime, which were ordinary cured for 2, 28 or 90 days. Hydration products and microstructure of the pastes were determined by X-ray diffraction (XRD), differential thermal analysis/thermal gravimetry (DTA/TG) and mercury intrusion porosimetry (MIP). MK was produced by calcination of kaolin from a Serbian deposit, which contained a high level of impurities.

Replacement of OPC with 30% of MK achieved 28 days compressive strength equivalent to that of the control mix. Higher replacement levels, 40% and 50%, combined with the addition of hydrated lime, achieved satisfactory relative strengths of 94% and 87%, respectively. The positive contribution was particularly pronounced after 90 days for a composite containing 50% of MK. The results clearly showed a possibility of obtaining composites having acceptable compressive strength with reduced cement content in accordance with environmental and sustained development requirements.
PB  - Dordrecht : Springer
C3  - Calcined Clays for Sustainable Concrete: Proceedings of the 2nd International Conference on Calcined Clays for Sustainable Concrete
T1  - Properties of the cement-based composites with high content of metakaolin
DO  - 10.1007/978-94-024-1207-9_35
UR  - https://hdl.handle.net/21.15107/rcub_dais_2375
ER  - 
@conference{
author = "Ilić, Biljana and Radonjanin, Vlastimir and Malešev, Mirjana and Zdujić, Miodrag and Mitrović, Aleksandra",
year = "2018",
abstract = "Environmental concerns and sustainable development require increased replacement of cement. Most of previous studies have shown that the compressive strength of cement-based composites is maximized with a 20% content of metakaolin. We investigated composites prepared by replacing ordinary Portland Cement (OPC) with 30 to 50% of metakaolin (MK) and addition of appropriate amount of hydrated lime, which were ordinary cured for 2, 28 or 90 days. Hydration products and microstructure of the pastes were determined by X-ray diffraction (XRD), differential thermal analysis/thermal gravimetry (DTA/TG) and mercury intrusion porosimetry (MIP). MK was produced by calcination of kaolin from a Serbian deposit, which contained a high level of impurities.

Replacement of OPC with 30% of MK achieved 28 days compressive strength equivalent to that of the control mix. Higher replacement levels, 40% and 50%, combined with the addition of hydrated lime, achieved satisfactory relative strengths of 94% and 87%, respectively. The positive contribution was particularly pronounced after 90 days for a composite containing 50% of MK. The results clearly showed a possibility of obtaining composites having acceptable compressive strength with reduced cement content in accordance with environmental and sustained development requirements.",
publisher = "Dordrecht : Springer",
journal = "Calcined Clays for Sustainable Concrete: Proceedings of the 2nd International Conference on Calcined Clays for Sustainable Concrete",
title = "Properties of the cement-based composites with high content of metakaolin",
doi = "10.1007/978-94-024-1207-9_35",
url = "https://hdl.handle.net/21.15107/rcub_dais_2375"
}
Ilić, B., Radonjanin, V., Malešev, M., Zdujić, M.,& Mitrović, A.. (2018). Properties of the cement-based composites with high content of metakaolin. in Calcined Clays for Sustainable Concrete: Proceedings of the 2nd International Conference on Calcined Clays for Sustainable Concrete
Dordrecht : Springer..
https://doi.org/10.1007/978-94-024-1207-9_35
https://hdl.handle.net/21.15107/rcub_dais_2375
Ilić B, Radonjanin V, Malešev M, Zdujić M, Mitrović A. Properties of the cement-based composites with high content of metakaolin. in Calcined Clays for Sustainable Concrete: Proceedings of the 2nd International Conference on Calcined Clays for Sustainable Concrete. 2018;.
doi:10.1007/978-94-024-1207-9_35
https://hdl.handle.net/21.15107/rcub_dais_2375 .
Ilić, Biljana, Radonjanin, Vlastimir, Malešev, Mirjana, Zdujić, Miodrag, Mitrović, Aleksandra, "Properties of the cement-based composites with high content of metakaolin" in Calcined Clays for Sustainable Concrete: Proceedings of the 2nd International Conference on Calcined Clays for Sustainable Concrete (2018),
https://doi.org/10.1007/978-94-024-1207-9_35 .,
https://hdl.handle.net/21.15107/rcub_dais_2375 .

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