Assessment of Reusing Ferrochrome Slag Wastes in Mortar as SCMs

Işil, Sanrı Karapınar; Biricik, Hasan

doi:10.1007/s11595-020-2354-x

Cited by 4 publications

(2 citation statements)

References 19 publications

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“…Zhou et al [124] used a compound chemical activator composed of NaCl, Na 2 SO 4 , NaF, and Al 2 (SO 4 ) 3 to effectively activate low-carbon chromite slag. Işil and Hasan [125] evaluated the potential of FCS as an SCM for preparing mortar, and their SEM and XRD results showed that FCS has pozzolanic activity and that it shows potential as a cement-based SCM.…”

Section: Ferrochrome Slagmentioning

confidence: 99%

Research Progress on Controlled Low-Strength Materials: Metallurgical Waste Slag as Cementitious Materials

Liu

et al. 2022

Materials

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Increasing global cement and steel consumption means that a significant amount of greenhouse gases and metallurgical wastes are discharged every year. Using metallurgical waste as supplementary cementitious materials (SCMs) shows promise as a strategy for reducing greenhouse gas emissions by reducing cement production. This strategy also contributes to the utilization and management of waste resources. Controlled low-strength materials (CLSMs) are a type of backfill material consisting of industrial by-products that do not meet specification requirements. The preparation of CLSMs using metallurgical waste slag as the auxiliary cementing material instead of cement itself is a key feature of the sustainable development of the construction industry. Therefore, this paper reviews the recent research progress on the use of metallurgical waste residues (including blast furnace slag, steel slag, red mud, and copper slag) as SCMs to partially replace cement, as well as the use of alkali-activated metallurgical waste residues as cementitious materials to completely replace cement for the production of CLSMs. The general background information, mechanical features, and properties of pozzolanic metallurgical slag are introduced, and the relationship and mechanism of metallurgical slag on the performance and mechanical properties of CLSMs are analyzed. The analysis and observations in this article offer a new resource for SCM development, describe a basis for using metallurgical waste slag as a cementitious material for CLSM preparation, and offer a strategy for reducing the environmental problems associated with the treatment of metallurgical waste.

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Section: Ferrochrome Slagmentioning

confidence: 99%

Research Progress on Controlled Low-Strength Materials: Metallurgical Waste Slag as Cementitious Materials

Liu

et al. 2022

Materials

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“…Acharya [ 13 ] reviewed the preparation of concrete from chromite slag, and reported its work characteristics, economic advantages, and environmental benefits. Isil [ 14 ] evaluates the feasibility of ferrochrome slag as cementing material, and studied the effect of it as concrete admixture on mechanical properties. Nath [ 15 ] investigated the preparation of cement-based materials from chromite slag and fly ash.…”

Section: Introductionmentioning

confidence: 99%

Preparation and Hydration Mechanisms of Low Carbon Ferrochrome Slag-Granulated Blast Furnace Slag Composite Cementitious Materials

Ren

Wang

et al. 2023

Materials

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Low carbon ferrochrome slag (LCFS) is the metallurgical waste slag from the carbon ferrochrome alloy smelting process. Compared with high carbon ferrochrome slag, LCFS has great potential as cementitious material; the chemical compositions of the two types of slag are quite different. In this research, composite cementitious materials are prepared which use low carbon ferrochrome slag and granulated blast furnace slag (GBFS) as the main raw material. Steel slag mud (SSM) and flue gas desulfurization gypsum (FGDG) are used as the activator. In order to find the variety rule of compressive strength on the composite cementitious materials, a three-factor three-level Box-Behnken design is used to discuss the following independent variables: LCFS content, GBFS content, and water-binder ratio. Moreover, the hydration characteristics of the LCFS-GBFS composite cementitious materials is studied in this paper in terms of hydration product, micromorphology, and hydration degree, based on multi-technical microstructural characterizations. The results show that the compressive strength of the LCFS-GBFS composite cementitious materials is significantly affected by single factors and the interaction of two factors. The mechanical property of the mortar samples at 3, 7, and 28 days are 26.6, 35.3, and 42.7 MPa, respectively, when the LCFS-GBFS-SSM-FGDG ratio is 3:5:1:1 and the water-binder ratio is 0.3. The hydration products of LCFS-GBFS composite cementitious materials are mainly amorphous gels (C-S-H gel), ettringite, and Ca(OH)2. With the increase of LCFS content, more hydration products are generated, and the microstructure of the cementitious system becomes more compact, which contributes to the compressive strength. The results of this research can provide a preliminary theoretical foundation for the development of LCFS-GBFS composite cementitious materials and promote the feasibility of its application in the construction industry. Deep hydration mechanism analysis and engineering applications should be studied in the future.

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Effects of Water-cement Ratio and Hydration Heat Regulating Materials on Hydration Process of Early-age Cementitious Materials

Zhao

Xiang

et al. 2023

J. Wuhan Univ. Technol.-Mat. Sci. Edit.

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Assessment of Reusing Ferrochrome Slag Wastes in Mortar as SCMs

Cited by 4 publications

References 19 publications

Research Progress on Controlled Low-Strength Materials: Metallurgical Waste Slag as Cementitious Materials

Research Progress on Controlled Low-Strength Materials: Metallurgical Waste Slag as Cementitious Materials

Preparation and Hydration Mechanisms of Low Carbon Ferrochrome Slag-Granulated Blast Furnace Slag Composite Cementitious Materials

Effects of Water-cement Ratio and Hydration Heat Regulating Materials on Hydration Process of Early-age Cementitious Materials

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