Improved compressive strength of alkali activated slag upon heating

Nikolić, Irena; Karanović, Ljiljana; Janković-Častvan, Ivona; Radmilović, Vuk; Mentus, Slavko; Radmilović, Velimir R.

doi:10.1016/j.matlet.2014.07.021

2014

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Authors

Nikolić, Irena

Karanović, Ljiljana

Janković-Častvan, Ivona

Radmilović, Vuk

Mentus, Slavko

Radmilović, Velimir R.

Article (Published version)

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Abstract

This paper presents a study on thermal stability of alkali activated slag (AAS) prepared from electric arc furnace slag (EAFS) using a mixture of alkaline sodium hydroxide and sodium silicate solutions. The samples were investigated by means of XRD, SEM, TG/DTA and porosity analysis. Compressive strengths of MS samples before and after exposure to elevated temperatures ranging from 600 degrees C to 1000 degrees C were determined. The significant microstructural modifications highlighted by changes in porosity due to the sintering process are responsible for the strengthening of MS sample after heating at 600,800 and 1000 degrees C. Moreover, in MS sample after heating to and above 600 degrees C wustite transforms to spinel.

Keywords:

Amorphous materials / Porous materials / Sintering / Thermal properties / Steel slag / Alkali activated slag

Source:
Materials Letters, 2014, 133, 251-254

Publisher:

Elsevier Science Bv, Amsterdam

Funding / projects:

Montenegrin Ministry of Science [01-460]
U.S. Department of EnergyUnited States Department of Energy (DOE) [DE-AC02-05CH11231]
Development, characterization and application nanostructured and composite electrocatalysts and interactive supports for fuel cells and water electrolysis (RS-172054)
Synthesis, processing and applications of nanostructured multifunctional materials with defined properties (RS-45019)

DOI: 10.1016/j.matlet.2014.07.021

ISSN: 0167-577X

WoS: 000341555800066

Scopus: 2-s2.0-84905012376

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	12

TY  - JOUR
AU  - Nikolić, Irena
AU  - Karanović, Ljiljana
AU  - Janković-Častvan, Ivona
AU  - Radmilović, Vuk
AU  - Mentus, Slavko
AU  - Radmilović, Velimir R.
PY  - 2014
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/2661
AB  - This paper presents a study on thermal stability of alkali activated slag (AAS) prepared from electric arc furnace slag (EAFS) using a mixture of alkaline sodium hydroxide and sodium silicate solutions. The samples were investigated by means of XRD, SEM, TG/DTA and porosity analysis. Compressive strengths of MS samples before and after exposure to elevated temperatures ranging from 600 degrees C to 1000 degrees C were determined. The significant microstructural modifications highlighted by changes in porosity due to the sintering process are responsible for the strengthening of MS sample after heating at 600,800 and 1000 degrees C. Moreover, in MS sample after heating to and above 600 degrees C wustite transforms to spinel.
PB  - Elsevier Science Bv, Amsterdam
T2  - Materials Letters
T1  - Improved compressive strength of alkali activated slag upon heating
EP  - 254
SP  - 251
VL  - 133
DO  - 10.1016/j.matlet.2014.07.021
ER  -

@article{
author = "Nikolić, Irena and Karanović, Ljiljana and Janković-Častvan, Ivona and Radmilović, Vuk and Mentus, Slavko and Radmilović, Velimir R.",
year = "2014",
abstract = "This paper presents a study on thermal stability of alkali activated slag (AAS) prepared from electric arc furnace slag (EAFS) using a mixture of alkaline sodium hydroxide and sodium silicate solutions. The samples were investigated by means of XRD, SEM, TG/DTA and porosity analysis. Compressive strengths of MS samples before and after exposure to elevated temperatures ranging from 600 degrees C to 1000 degrees C were determined. The significant microstructural modifications highlighted by changes in porosity due to the sintering process are responsible for the strengthening of MS sample after heating at 600,800 and 1000 degrees C. Moreover, in MS sample after heating to and above 600 degrees C wustite transforms to spinel.",
publisher = "Elsevier Science Bv, Amsterdam",
journal = "Materials Letters",
title = "Improved compressive strength of alkali activated slag upon heating",
pages = "254-251",
volume = "133",
doi = "10.1016/j.matlet.2014.07.021"
}

Nikolić, I., Karanović, L., Janković-Častvan, I., Radmilović, V., Mentus, S.,& Radmilović, V. R.. (2014). Improved compressive strength of alkali activated slag upon heating. in Materials Letters
Elsevier Science Bv, Amsterdam., 133, 251-254.
https://doi.org/10.1016/j.matlet.2014.07.021

Nikolić I, Karanović L, Janković-Častvan I, Radmilović V, Mentus S, Radmilović VR. Improved compressive strength of alkali activated slag upon heating. in Materials Letters. 2014;133:251-254.
doi:10.1016/j.matlet.2014.07.021 .

Nikolić, Irena, Karanović, Ljiljana, Janković-Častvan, Ivona, Radmilović, Vuk, Mentus, Slavko, Radmilović, Velimir R., "Improved compressive strength of alkali activated slag upon heating" in Materials Letters, 133 (2014):251-254,
https://doi.org/10.1016/j.matlet.2014.07.021 . .