Rheological Properties of Ordinary Portland Cement - Blast Furnace Slag - Fly Ash Blends Containing Ground Fly Ash

Park, Hyo‐Sang; Yoo, Dong‐Woo; Byun, Seung-Ho; Song, Jong-Taek

doi:10.4191/kcers.2009.46.1.058

Journal of the Korean Ceramic Society

2009

DOI: 10.4191/kcers.2009.46.1.058

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Rheological Properties of Ordinary Portland Cement - Blast Furnace Slag - Fly Ash Blends Containing Ground Fly Ash

Hyo‐Sang Park¹,

Dong‐Woo Yoo²,

Seung-Ho Byun³

et al.

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Cited by 3 publications

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“…Therefore, to mix fly ash from a fluidized bed boiler with ordinary Portland cement (OPC), pure CaO needs to be stabilized. Generally, the carbonation of pure CaO involves the reactions of Equation (1) and (3) occurring consecutively along with mixing with an aqueous carbonate solution or the production of carbonate by the reaction of Equation 3:…”

mentioning

confidence: 99%

Carbonation of Circulating Fluidized Bed Boiler Fly Ash Using Carbonate Liquids

Lee¹,

Kim

Jeon³

et al. 2017

J. Korean Ceram. Soc

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The purpose of this study was to examine a possibility that fly ash could be used as raw material for carbonation by conducting the experiment on magnetic separation and hydration of fly ash that contained a large amount of CaO composite. Wet magnetic separation experiment was performed to remove the component of magnetic substance that contained fly ash, which aimed at increasing the content of CaO in the non-magnetic domain. The selected fly ash was used for hydration experiment before the TG-DTA, XRF and XRD analyses were made to confirm the Ca component that could be carbonated. Then, the fly ash was turned to a hydrate that was favorable to dissociation of Ca 2+ ion. As a result, the magnetic separation enabled detecting the content of CaO component by up to 61 wt% in the non-magnetic domain. Since the hydrate was confirmed, it is believed that the fly ash can be used as raw material for carbonation.

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mentioning

confidence: 99%

Carbonation of Circulating Fluidized Bed Boiler Fly Ash Using Carbonate Liquids

Lee¹,

Kim

Jeon³

et al. 2017

J. Korean Ceram. Soc

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Influence of Water Glass Content on the Compressive Strength of Aluminosilicate-Based Geopolymer

Kim¹,

Seo²,

Kim³

et al. 2010

Korean. J. Mater. Res.

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Geopolymer is a term covering a class of synthetic aluminosilicate materials with potential use in a number of areas, but mainly as a replacement for Portland cement. In this study, geopolymers with fly ash and meta kaolin were prepared using KOH as an alkali activator and water glass. The effect of water glass on the microstructures and the compressive strength of the geopolymer was investigated. As the amount of water glass increased, the dissolved inorganic binder particles in the geopolymers increased due to polymerization, resulting in a dense microstructure. The meta kaolin-based geopolymer showed a better extent of polymerization and densification than that of the fly ash-based geopolymer. XRD data also suggested that polymerization in meta kaolin-based geopolymers should be active resulting in the formation of an amorphous phase with an increasing amount of water glass. The compressive strength of the geopolymer was also dependent on the amount of water glass. The compressive strength of the geopolymers from both fly ash and meta kaolin increased with an increasing amount of water glass because water glass improved the extent of polymerization of the inorganic binder and resulted in a dense microstructure. However, the addition of water glass to the geopolymer did not seem to be effective for the improvement of compressive strength because the meta kaolin-based geopolymer mainly consisted of a clay component. For this reason, the fly ash-based geopolymer showed a higher value of compressive strength than the meta-kaolin geopolymer.

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Influence of Alkaline-activator Content on the Compressive Strength of Aluminosilicate-based Geopolymer

Kim¹,

Seo²,

Kim³

et al. 2010

Journal of the Korean Ceramic Society

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Rheological Properties of Ordinary Portland Cement - Blast Furnace Slag - Fly Ash Blends Containing Ground Fly Ash

Cited by 3 publications

References 5 publications

Carbonation of Circulating Fluidized Bed Boiler Fly Ash Using Carbonate Liquids

Carbonation of Circulating Fluidized Bed Boiler Fly Ash Using Carbonate Liquids

Influence of Water Glass Content on the Compressive Strength of Aluminosilicate-Based Geopolymer

Influence of Alkaline-activator Content on the Compressive Strength of Aluminosilicate-based Geopolymer

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