Analytical model of expansion for electric arc furnace oxidizing slag-containing concrete

In order to ensure the safety of traffic, asphalt pavement is commonly required to utilize aggregates with excellent anti-abrasion property. This results in the lack of high-quality aggregates. The incorporation of solid waste in the aggregates is regarded as a high potential alternative for solving this problem. Since its material properties, such as rough surface, high Polished Stone Value (PSV) and the excellent adhesion property of asphalt, Basic Oxygen Furnace (BOF) slag can effectively improve the skid resistance of asphalt mixtures. First, the material properties of BOF slag are reviewed in this study. Then, the skid resistance of asphalt mixtures and aggregates are commendably evaluated by the Polished Stone Value test, Wehner/Schulze Tester, Aachen Polishing Machine, British Pendulum Test and Sand Patch test. The physical and mechanical properties of BOF slag play a key role in asphalt mixtures. This review found that the skid resistance mechanism of the BOF slag asphalt mixture is governed by factors such as BOF slag properties, incorporation methods and gradation types. Finally, the economic and environmental benefits of BOF slag asphalt mixtures were discussed. In addition, the function of gas catalysis and the melting of ice and snow can be added to the BOF slag asphalt mixture for a cleaner development in engineering. Furthermore, the existing problems, research directions and corresponding measures in this field are directed towards more durable and functional asphalt pavement construction.

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“…Chen [35], Bocci [39], Shu [40], Zhao [41]. Using acidic compound to react with steel slag Ding [42], Teir [43].…”

Section: Agingmentioning

confidence: 99%

Research Progress on Skid Resistance of Basic Oxygen Furnace (BOF) Slag Asphalt Mixtures

Xiong

Zhai

et al. 2020

Materials

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“…Due to its hardness, BFS is commonly used for road construction and as concrete aggregate [5,6,7,8,9]; however, it must be stabilized first due to the presence of SiO 2 , CaO, Al 2 O 3 , and MgO. The reaction of free calcium oxide (f-CaO) with water can lead to the formation of Ca(OH) 2 and CaCO 3 [10,11], resulting in excessive expansion and alkali-aggregate reactions [12,13].…”

Section: Introductionmentioning

confidence: 99%

Feasibility and Characterization Mortar Blended with High-Amount Basic Oxygen Furnace Slag

Lin

Tsai²,

Chen

et al. 2018

Materials

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Basic oxygen furnace slag (BOFS) was ground to three levels of fineness as a replacement for cement at weight proportions of 10, 30, 50, and 70 wt.%. Fineness and weight proportion were shown to have significant effects on the flowability and setting time of the mortars. The expansion of BOFS mortars increased with an increase in the proportion of cement replaced, thereby exacerbating the effects of cracking. Optimal mechanical properties were achieved when 10 wt.% of the cement was replaced using BOFS with fineness of 10,000 cm2/g. The compressive strength of BOFS mortar is similar to that of ordinary Portland mortar, which makes BOFS suitable for the partial replacement of cement as a supplementary cementitious material. Scanning electron microscopy results revealed that the reaction of CaO with H2O results in the formation of C–S–H colloids, whereas the reaction of SiO2 with Al2O3 produces C–A–S–H colloids. The use of BOFS as a partial replacement for Portland cement could make a tremendous contribution to the steel industry and help to lower CO2 emissions.

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Performance of Alkali-Activated Concrete Mixes Incorporating Precious Slag as Fine Aggregate

Talkeri

Ramaiah²

2023

Int. J. Pavement Res. Technol.

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Analytical model of expansion for electric arc furnace oxidizing slag-containing concrete

Cited by 4 publications

References 13 publications

Research Progress on Skid Resistance of Basic Oxygen Furnace (BOF) Slag Asphalt Mixtures

Research Progress on Skid Resistance of Basic Oxygen Furnace (BOF) Slag Asphalt Mixtures

Feasibility and Characterization Mortar Blended with High-Amount Basic Oxygen Furnace Slag

Performance of Alkali-Activated Concrete Mixes Incorporating Precious Slag as Fine Aggregate

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