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Erschienen in: Journal of Material Cycles and Waste Management 3/2022

11.03.2022 | ORIGINAL ARTICLE

Influence of ferrochrome ash on mechanical and microstructure properties of ambient cured fly ash-based geopolymer concrete

verfasst von: Jyotirmoy Mishra, Bharadwaj Nanda, Sanjaya K. Patro, Shaswat K. Das, Syed M. Mustakim

Erschienen in: Journal of Material Cycles and Waste Management | Ausgabe 3/2022

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Abstract

Earlier studies indicated that the reactive MgO reduces shrinkage crack and porosity, and accelerates the hydration and strength development. Ferrochrome ash (FCA), a waste generated from ferrochrome industry, is a rich source of MgO apart from the aluminosilicate compositions and hence can fulfil the need for added reactive MgO. With this objective, several geopolymer mixes are prepared by varying mix proportions of FCA and FA from 20 to 80% in the source mix. The alkaline solutions of sodium hydroxide and sodium silicate were used to activate these sources. The effect of FCA on resulting geopolymer concrete mix is evaluated through workability, compressive strength, microstructural and mineralogical analysis. Based on these extensive studies it is observed that a mix containing FCA and FA in 60:40 ratio can be best suited for geopolymerization that resulted in the 28-day compressive strength of 29.3 MPa under ambient curing condition.

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Metadaten
Titel
Influence of ferrochrome ash on mechanical and microstructure properties of ambient cured fly ash-based geopolymer concrete
verfasst von
Jyotirmoy Mishra
Bharadwaj Nanda
Sanjaya K. Patro
Shaswat K. Das
Syed M. Mustakim
Publikationsdatum
11.03.2022
Verlag
Springer Japan
Erschienen in
Journal of Material Cycles and Waste Management / Ausgabe 3/2022
Print ISSN: 1438-4957
Elektronische ISSN: 1611-8227
DOI
https://doi.org/10.1007/s10163-022-01381-1

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