Synergetic Effect of Combined Converter Steel Slag and Metakaolin Hydration

Winnie Franco Santos; Katrin Schollbach; Sieger van der Laan; H. J.H. Brouwers

Synergetic Effect of Combined Converter Steel Slag and Metakaolin Hydration

Winnie Franco Santos, Katrin Schollbach, Sieger van der Laan, H. J.H. Brouwers

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Academic › peer-review

Abstract

Converter steel slag exhibits very low hydration activity compared to ordinary portland cement. To increase its reactivity, a mixture with metakaolin (Al2O3·2SiO2) was designed to increase the binding capacity. Metakaolin was used for its purity and high pozzolanic reactivity, owing to its high alumina and silica content. Two systems were prepared, metakaolin and portlandite as a reference, and the second system was composed of converter slag and metakaolin. Reactivity was assessed by measuring the heat release of the hydration reactions by isothermal calorimetry. Calorimetry results show the cumulative heat of converter slag increases when metakaolin is added. Furthermore, new hydration products were identified. Large area phase mapping based on SEM/EDX spectral imaging was done to investigate the reactions between the components.

Original language	English
Title of host publication	11th ACI/RILEM International Conference on Cementitious Materials and Alternative Binders for Sustainable Concrete, ICCM 2021
Editors	Arezki Tagnit-Hamou
Publisher	American Concrete Institute
Pages	466-478
Number of pages	13
ISBN (Electronic)	9781641951395
Publication status	Published - 28 Apr 2021
Event	11th ACI/RILEM International Conference on Cementitious Materials and Alternative Binders for Sustainable Concrete, ICCM 2021 - Virtual, Online Duration: 7 Jun 2021 → 10 Jun 2021

Publication series

Name	American Concrete Institute, ACI Special Publication
Volume	SP-349
ISSN (Print)	0193-2527

Conference

Conference	11th ACI/RILEM International Conference on Cementitious Materials and Alternative Binders for Sustainable Concrete, ICCM 2021
City	Virtual, Online
Period	7/06/21 → 10/06/21

Bibliographical note

Funding Information:
Organisation for Scientific Research) for funding this research (project no.10023338) and M2i

Publisher Copyright:
© 2021 American Concrete Institute. All rights reserved.

Keywords

converter steel slag; metakaolin
mineralogy
reactivity

Cite this

Santos, W. F., Schollbach, K., van der Laan, S., & Brouwers, H. J. H. (2021). Synergetic Effect of Combined Converter Steel Slag and Metakaolin Hydration. In A. Tagnit-Hamou (Ed.), 11th ACI/RILEM International Conference on Cementitious Materials and Alternative Binders for Sustainable Concrete, ICCM 2021 (pp. 466-478). (American Concrete Institute, ACI Special Publication; Vol. SP-349). American Concrete Institute.

Santos, Winnie Franco ; Schollbach, Katrin ; van der Laan, Sieger et al. / Synergetic Effect of Combined Converter Steel Slag and Metakaolin Hydration. 11th ACI/RILEM International Conference on Cementitious Materials and Alternative Binders for Sustainable Concrete, ICCM 2021. editor / Arezki Tagnit-Hamou. American Concrete Institute, 2021. pp. 466-478 (American Concrete Institute, ACI Special Publication).

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title = "Synergetic Effect of Combined Converter Steel Slag and Metakaolin Hydration",

abstract = "Converter steel slag exhibits very low hydration activity compared to ordinary portland cement. To increase its reactivity, a mixture with metakaolin (Al2O3·2SiO2) was designed to increase the binding capacity. Metakaolin was used for its purity and high pozzolanic reactivity, owing to its high alumina and silica content. Two systems were prepared, metakaolin and portlandite as a reference, and the second system was composed of converter slag and metakaolin. Reactivity was assessed by measuring the heat release of the hydration reactions by isothermal calorimetry. Calorimetry results show the cumulative heat of converter slag increases when metakaolin is added. Furthermore, new hydration products were identified. Large area phase mapping based on SEM/EDX spectral imaging was done to investigate the reactions between the components.",

keywords = "converter steel slag; metakaolin, mineralogy, reactivity",

author = "Santos, {Winnie Franco} and Katrin Schollbach and {van der Laan}, Sieger and Brouwers, {H. J.H.}",

note = "Funding Information: Organisation for Scientific Research) for funding this research (project no.10023338) and M2i Publisher Copyright: {\textcopyright} 2021 American Concrete Institute. All rights reserved.; 11th ACI/RILEM International Conference on Cementitious Materials and Alternative Binders for Sustainable Concrete, ICCM 2021 ; Conference date: 07-06-2021 Through 10-06-2021",

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Santos, WF , Schollbach, K , van der Laan, S & Brouwers, HJH 2021, Synergetic Effect of Combined Converter Steel Slag and Metakaolin Hydration. in A Tagnit-Hamou (ed.), 11th ACI/RILEM International Conference on Cementitious Materials and Alternative Binders for Sustainable Concrete, ICCM 2021. American Concrete Institute, ACI Special Publication, vol. SP-349, American Concrete Institute, pp. 466-478, 11th ACI/RILEM International Conference on Cementitious Materials and Alternative Binders for Sustainable Concrete, ICCM 2021, Virtual, Online, 7/06/21.

Synergetic Effect of Combined Converter Steel Slag and Metakaolin Hydration. / Santos, Winnie Franco ; Schollbach, Katrin ; van der Laan, Sieger et al.
11th ACI/RILEM International Conference on Cementitious Materials and Alternative Binders for Sustainable Concrete, ICCM 2021. ed. / Arezki Tagnit-Hamou. American Concrete Institute, 2021. p. 466-478 (American Concrete Institute, ACI Special Publication; Vol. SP-349).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Academic › peer-review

TY - GEN

T1 - Synergetic Effect of Combined Converter Steel Slag and Metakaolin Hydration

AU - Santos, Winnie Franco

AU - Schollbach, Katrin

AU - van der Laan, Sieger

AU - Brouwers, H. J.H.

PY - 2021/4/28

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N2 - Converter steel slag exhibits very low hydration activity compared to ordinary portland cement. To increase its reactivity, a mixture with metakaolin (Al2O3·2SiO2) was designed to increase the binding capacity. Metakaolin was used for its purity and high pozzolanic reactivity, owing to its high alumina and silica content. Two systems were prepared, metakaolin and portlandite as a reference, and the second system was composed of converter slag and metakaolin. Reactivity was assessed by measuring the heat release of the hydration reactions by isothermal calorimetry. Calorimetry results show the cumulative heat of converter slag increases when metakaolin is added. Furthermore, new hydration products were identified. Large area phase mapping based on SEM/EDX spectral imaging was done to investigate the reactions between the components.

AB - Converter steel slag exhibits very low hydration activity compared to ordinary portland cement. To increase its reactivity, a mixture with metakaolin (Al2O3·2SiO2) was designed to increase the binding capacity. Metakaolin was used for its purity and high pozzolanic reactivity, owing to its high alumina and silica content. Two systems were prepared, metakaolin and portlandite as a reference, and the second system was composed of converter slag and metakaolin. Reactivity was assessed by measuring the heat release of the hydration reactions by isothermal calorimetry. Calorimetry results show the cumulative heat of converter slag increases when metakaolin is added. Furthermore, new hydration products were identified. Large area phase mapping based on SEM/EDX spectral imaging was done to investigate the reactions between the components.

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Santos WF , Schollbach K , van der Laan S , Brouwers HJH. Synergetic Effect of Combined Converter Steel Slag and Metakaolin Hydration. In Tagnit-Hamou A, editor, 11th ACI/RILEM International Conference on Cementitious Materials and Alternative Binders for Sustainable Concrete, ICCM 2021. American Concrete Institute. 2021. p. 466-478. (American Concrete Institute, ACI Special Publication).

Synergetic Effect of Combined Converter Steel Slag and Metakaolin Hydration

Abstract

Publication series

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Bibliographical note

Keywords

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