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논문 기본 정보

자료유형
학술저널
저자정보
Ouda Ahmed S. (Raw Building Materials Technology and Processing Research Institute, Housing) Rashad Alaa M. (Building Materials Research and Quality Control Institute, Housing) Gharieb Mahmoud (Raw Building Materials Technology and Processing Research Institute, Housing)
저널정보
한국자원공학회 Geosystem Engineering Geosystem Engineering Vol.27 No.4
발행연도
2024.8
수록면
171 - 185 (15page)
DOI
10.1080/12269328.2024.2352742

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초록· 키워드

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The precursor type and activator are two primary factors that significantly affect the properties of geopolymers. Most of the previous studies used byproduct materials such as fly ash (FA) and slag as geopolymer precursors, while too limited studies used electric arc furnace slag (EAFS) for this purpose. The EAFS is a type of steel slag, which can be produced when scrap steel is melted. The preliminary usage of EAFS as a precursor in the geopolymer system has not been sufficiently highlighted. To make this come true, the current procedure employed EAFS as a precursor material for the geopolymeric system. Due to superior properties, EAFS was partially replaced with 10–50 wt% pozzocrete (Pz). Two different types of alkaline activators, NaOH and Na2CO3, were used to activate EAFS slurries supported by Pz. The results indicated that the optimal ratio of Pz to be replaced by EAFS to achieve the target properties varies according to the type of activator. The inclusion of 10% Pz exhibited maximum compressive strength when Na2CO3 was used, whilst 50% Pz exhibited maximum compressive strength when NaOH was used. The coexistence between N-A-S-H from Pz and C-(A)-S-H gel from EAFS is the main reason for the enhanced strength.

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