Initial investigation into the effect of iron silicate addition to metakaolin-based geopolymers

Allistair Wilkinson, WDH Woodward, Bryan Magee, R Eadie

Research output: Contribution to conferencePaper

Abstract

Geopolymer cement is a sustainable, high performance alternative to ordinary Portland cement. An increasing interest in the development and use of geopolymer cement has led to new research into the use of available waste materials and by-products. Aside from the typical geopolymeric materials such as metakaolin, fly ash and GGBS, other materials such as red mud and mining wastes have been found to have potential. Produced and landfilled in Bulgaria, iron-silicate fines (ISF) have been identified as an alternative material which can enhance the properties of geopolymers, as reactive component in metakaolin-based geopolymer mortars. To date, ISF has not been considered for use as a geopolymeric material. This paper presents the results of an initial study into the potential use of ISF as a component of metakaolin-based geopolymers. The effect of ISF of geopolymer mortars is considered. Increasing the ratio of ISF was found to significantly increase the mortar flow, but also increase the setting time of the mortar. The replacement of metakaolin with ISF, up to 20 %, improved the 7 day compressive strength by more than 13 %. The potential use of a synthetic geopolymer aggregate, containing ISF, as a high polished stone value aggregate was also considered. Initial testing suggest a good resistance to coarse polishing, but a much lower resistance to fine polishing. However, the study has identified that ISF has good potential for use in geopolymer applications.

Conference

ConferenceSeventh International Scientific Conference “Education, Science, Innovations” ESI’2017
Abbreviated titleESI’2017
CountryBulgaria
CityPernik
Period9/06/1710/06/17

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silicate
iron
mortar
cement
effect
compressive strength
fly ash
mud
replacement
material

Cite this

Wilkinson, A., Woodward, WDH., Magee, B., & Eadie, R. (2017). Initial investigation into the effect of iron silicate addition to metakaolin-based geopolymers. 45 - 53. Paper presented at Seventh International Scientific Conference “Education, Science, Innovations” ESI’2017, Pernik, Bulgaria.
Wilkinson, Allistair ; Woodward, WDH ; Magee, Bryan ; Eadie, R. / Initial investigation into the effect of iron silicate addition to metakaolin-based geopolymers. Paper presented at Seventh International Scientific Conference “Education, Science, Innovations” ESI’2017, Pernik, Bulgaria.8 p.
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abstract = "Geopolymer cement is a sustainable, high performance alternative to ordinary Portland cement. An increasing interest in the development and use of geopolymer cement has led to new research into the use of available waste materials and by-products. Aside from the typical geopolymeric materials such as metakaolin, fly ash and GGBS, other materials such as red mud and mining wastes have been found to have potential. Produced and landfilled in Bulgaria, iron-silicate fines (ISF) have been identified as an alternative material which can enhance the properties of geopolymers, as reactive component in metakaolin-based geopolymer mortars. To date, ISF has not been considered for use as a geopolymeric material. This paper presents the results of an initial study into the potential use of ISF as a component of metakaolin-based geopolymers. The effect of ISF of geopolymer mortars is considered. Increasing the ratio of ISF was found to significantly increase the mortar flow, but also increase the setting time of the mortar. The replacement of metakaolin with ISF, up to 20 {\%}, improved the 7 day compressive strength by more than 13 {\%}. The potential use of a synthetic geopolymer aggregate, containing ISF, as a high polished stone value aggregate was also considered. Initial testing suggest a good resistance to coarse polishing, but a much lower resistance to fine polishing. However, the study has identified that ISF has good potential for use in geopolymer applications.",
author = "Allistair Wilkinson and WDH Woodward and Bryan Magee and R Eadie",
note = "Acceptance was by telephone and the date displayed above was the date that the programme was circulated.; Seventh International Scientific Conference “Education, Science, Innovations” ESI’2017, ESI’2017 ; Conference date: 09-06-2017 Through 10-06-2017",
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Wilkinson, A, Woodward, WDH, Magee, B & Eadie, R 2017, 'Initial investigation into the effect of iron silicate addition to metakaolin-based geopolymers' Paper presented at Seventh International Scientific Conference “Education, Science, Innovations” ESI’2017, Pernik, Bulgaria, 9/06/17 - 10/06/17, pp. 45 - 53.

Initial investigation into the effect of iron silicate addition to metakaolin-based geopolymers. / Wilkinson, Allistair; Woodward, WDH; Magee, Bryan; Eadie, R.

2017. 45 - 53 Paper presented at Seventh International Scientific Conference “Education, Science, Innovations” ESI’2017, Pernik, Bulgaria.

Research output: Contribution to conferencePaper

TY - CONF

T1 - Initial investigation into the effect of iron silicate addition to metakaolin-based geopolymers

AU - Wilkinson, Allistair

AU - Woodward, WDH

AU - Magee, Bryan

AU - Eadie, R

N1 - Acceptance was by telephone and the date displayed above was the date that the programme was circulated.

PY - 2017/6/9

Y1 - 2017/6/9

N2 - Geopolymer cement is a sustainable, high performance alternative to ordinary Portland cement. An increasing interest in the development and use of geopolymer cement has led to new research into the use of available waste materials and by-products. Aside from the typical geopolymeric materials such as metakaolin, fly ash and GGBS, other materials such as red mud and mining wastes have been found to have potential. Produced and landfilled in Bulgaria, iron-silicate fines (ISF) have been identified as an alternative material which can enhance the properties of geopolymers, as reactive component in metakaolin-based geopolymer mortars. To date, ISF has not been considered for use as a geopolymeric material. This paper presents the results of an initial study into the potential use of ISF as a component of metakaolin-based geopolymers. The effect of ISF of geopolymer mortars is considered. Increasing the ratio of ISF was found to significantly increase the mortar flow, but also increase the setting time of the mortar. The replacement of metakaolin with ISF, up to 20 %, improved the 7 day compressive strength by more than 13 %. The potential use of a synthetic geopolymer aggregate, containing ISF, as a high polished stone value aggregate was also considered. Initial testing suggest a good resistance to coarse polishing, but a much lower resistance to fine polishing. However, the study has identified that ISF has good potential for use in geopolymer applications.

AB - Geopolymer cement is a sustainable, high performance alternative to ordinary Portland cement. An increasing interest in the development and use of geopolymer cement has led to new research into the use of available waste materials and by-products. Aside from the typical geopolymeric materials such as metakaolin, fly ash and GGBS, other materials such as red mud and mining wastes have been found to have potential. Produced and landfilled in Bulgaria, iron-silicate fines (ISF) have been identified as an alternative material which can enhance the properties of geopolymers, as reactive component in metakaolin-based geopolymer mortars. To date, ISF has not been considered for use as a geopolymeric material. This paper presents the results of an initial study into the potential use of ISF as a component of metakaolin-based geopolymers. The effect of ISF of geopolymer mortars is considered. Increasing the ratio of ISF was found to significantly increase the mortar flow, but also increase the setting time of the mortar. The replacement of metakaolin with ISF, up to 20 %, improved the 7 day compressive strength by more than 13 %. The potential use of a synthetic geopolymer aggregate, containing ISF, as a high polished stone value aggregate was also considered. Initial testing suggest a good resistance to coarse polishing, but a much lower resistance to fine polishing. However, the study has identified that ISF has good potential for use in geopolymer applications.

M3 - Paper

SP - 45

EP - 53

ER -

Wilkinson A, Woodward WDH, Magee B, Eadie R. Initial investigation into the effect of iron silicate addition to metakaolin-based geopolymers. 2017. Paper presented at Seventh International Scientific Conference “Education, Science, Innovations” ESI’2017, Pernik, Bulgaria.