Recent applications of steel slag in construction industry

Baalamurugan, J.; Kumar, Virendra; Padmapriya, R.; Raja, V.K. Bupesh

doi:10.1007/s10668-022-02894-3

Cited by 24 publications

(7 citation statements)

References 107 publications

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“…This can be attributed to their denser structure, with the melted glass pieces acting as internal locks to prevent crack propagation [ 47 ]. GGBFS has been used in prefabricated structural elements with improved fire resistance [ 48 , 49 , 50 ]. The properties were further enhanced in a mix containing 5 wt% of GGBFS and 5 wt% of fly ash.…”

Section: Fire Resistance Of Opc Concretes With Supplementary Cementit...mentioning

confidence: 99%

Eco-Concrete in High Temperatures

Sundin¹,

Hedlund²,

Ćwirzeń³

2023

Materials

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Concrete technology is becoming more and more sustainable and ecological following more extensive and focused research. The usage of industrial waste and by-products, such as steel ground granulated blast-furnace slag (GGBFS), mine tailing, fly ash, and recycled fibers, is a very important step toward a good transition of concrete into a “green” future and significant improvement in waste management in the world. However, there are also several known durability-related problems with some types of eco-concretes, including exposure to fire. The general mechanism occurring in fire and high-temperature scenarios is broadly known. There are many variables that weightily influence the performance of this material. This literature review has gathered information and results regarding more sustainable and fire-resistant binders, fire-resistant aggregates, and testing methods. Mixes that utilize industrial waste as a total or partial cement replacement have been consistently achieving favorable and frequently superior outcomes when compared to conventional ordinary Portland cement (OPC)-based mixes, especially at a temperature exposure up to 400 °C. However, the primary emphasis is placed on examining the impact of the matrix components, with less attention given to other factors such as sample treatment during and following exposure to high temperatures. Furthermore, there is a shortage of established standards that could be utilized in small-scale testing.

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Section: Fire Resistance Of Opc Concretes With Supplementary Cementit...mentioning

confidence: 99%

Eco-Concrete in High Temperatures

Sundin¹,

Hedlund²,

Ćwirzeń³

2023

Materials

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“…When replacing conventional soil for roadbed filling and reinforcement, this material is commonly referred to as foamed lightweight soil. This novel construction material offers advantages such as reduced weight, adjustable density and strength, and convenient construction [6][7][8][9][10]. Consequently, foamed lightweight soil, as a filling material, effectively alleviates the selfweight of the roadbed, minimizing settlement and presenting considerable prospects for widespread application [11][12][13][14].…”

Section: Introductionmentioning

confidence: 99%

“…However, during the preparation and mixing of foam light soil, part of the foam is broken because of the many edges and corners on the surface of the prepared steel slag [9]. Baalamurugan thought that steel slag morphology could be changed by grinding steel slag to reduce foam loss [10], but the grindability of steel slag is poor [14]. Hence, the balance between the fineness of steel slag and the loss of foam is worth exploring.…”

Section: Introductionmentioning

confidence: 99%

Features of Processes for Preparation and Performance of Foamed Lightweight Soil with Steel Slag Micronized Powder and Granulated Blast Furnace Slag

Liu,

Li,

et al. 2024

Processes

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Steel slag micronized powder, granulated blast furnace slag, and cement were used as cementitious materials to prepare a foamed lightweight soil for roadbed filling to reduce the settlement and additional stress of the foundation and to solve the environmental problems caused by the storage of large amounts of steel slag. However, the instability of steel slag and the multi-angular nature of its surface limit the resource utilization of steel slag. Currently, concrete technology is unable to achieve a large amount of steel slag. Therefore, it is necessary to deeply explore the influence of steel slag content and the specific surface area of steel slag on the working performance, compressive strength, durability, and micro-mechanism of foam light soil. Through the modification of steel slag and the improvement of the production process, the preparation of foam light soil with a large amount of steel slag can be realized. In this study, the foamed lightweight soil with 1.0 Mpa was prepared by cementitious materials composed of 40% cement and 60% multi-mixture of steel slag micronized powder and granulated blast furnace slag. The study of SEM images and BET demonstrated that the larger specific surface area of steel slag powder was more conducive to improving the durability of the foamed lightweight soil. Meanwhile, XRD analyses confirmed that the reactions of f-CaO and f-MgO in steel slag were slowly released in the porous foamed lightweight soil system, which compensated for the shrinkage properties of porous materials. When the SSMP content was 0%, the shrinkage rate was 2.34 × 10−3, while when the SSMP content was 60%, the shrinkage rate was only 0.54 × 10−3. Furthermore, our study of the hydration process of samples indicated that the strong alkalinity of steel slag micronized powder hydration was helpful to stimulate the potential activity of the slag powder, which was beneficial to the improvement of the compressive strength of foamed lightweight soil. Thus, this study provides a valuable idea for reducing the settlement and additional stress of the original foundation and for solving the environmental problems caused by a large amount of steel slag storage.

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“…This not only takes up considerable land resources and damages the ecological environment, but also poses a threat to human health [6][7][8][9]. Like other industrial solid wastes, if magnesium slag can be effectively utilized, this will bring great ecological and economic benefits [10][11][12][13][14], promoting the early realization of China's goal of "carbon peak and carbon neutrality" according to the Paris Agreement.…”

Section: Introductionmentioning

confidence: 99%

Structural Characteristics and Cementitious Behavior of Magnesium Slag in Comparison with Granulated Blast Furnace Slag

Lu,

Zhao,

Zhang

et al. 2024

Materials

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Magnesium slag is a type of industrial solid waste produced during the production of magnesium metal. In order to gain a deeper understanding of the structure of magnesium slag, the composition and microstructure of magnesium slag were investigated by using characterization methods such as X-ray fluorescence, particle size analysis, X-ray diffraction, Fourier transform infrared spectroscopy and scanning electron microscopy. In addition, the state of Si occurrence in magnesium slag was analyzed using a solid-state nuclear magnetic resonance technique in comparison with granulated blast furnace slag. An inductively coupled plasma-optical emission spectrometer and scanning electron microscope with energy dispersive X-ray spectroscopy were used to characterize their cementitious behavior. The results show that the chemical composition of magnesium slag mainly includes 54.71% CaO, 28.66% SiO2 and 11.82% MgO, and the content of Al2O3 is much lower than that of granulated blast furnace slag. Compared to granulated blast furnace slag, magnesium slag has a larger relative bridging oxygen number and higher [SiO4] polymerization degree. The cementitious activity of magnesium slag is lower compared to that of granulated blast furnace slag, but it can replace part of the cement to obtain higher compressive strength. Maximum compressive strength can be obtained when the amount of magnesium slag replacing cement is 20%, where the 28-day compressive strength can be up to 45.48 MPa. This work provides a relatively comprehensive analysis of the structural characteristics and cementitious behavior of magnesium slag, which is conducive to the promotion of magnesium slag utilization.

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Recent applications of steel slag in construction industry

Cited by 24 publications

References 107 publications

Eco-Concrete in High Temperatures

Eco-Concrete in High Temperatures

Features of Processes for Preparation and Performance of Foamed Lightweight Soil with Steel Slag Micronized Powder and Granulated Blast Furnace Slag

Structural Characteristics and Cementitious Behavior of Magnesium Slag in Comparison with Granulated Blast Furnace Slag

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