Preparation and properties of carbonated steel slag used in …
1. Introduction. Steel slag (SS) is a waste residue produced by steelmaking, which produces more than 110 million tons each year in China, but the effective utilization rate of SS is about 22% [1].The accumulation of SS is not only a waste of resources, but also a pollution to the environment [2], [3], [4].. Researches show that SS and Portland …
Preparation, microstructure and property of carbonated
Artificial steel slag aggregates were prepared via carbonating the mixes of steel slag, fly ash and Portland cement, of which the microstructure, property and their impact on the performance of concrete were investigated.Calcium carbonates were the main binders in the aggregates, of which the formation yielded dense microstructures …
Electric arc furnace slag as natural aggregate
Electric arc furnace slag (Fig. 2 ), crushed by the producer and supplied in three different sizes, fine (f), medium (m), coarse (c) ( Fig. 1 ), was added as a partial substitution of the natural ones. The specific mass of EAFs, in the range 3630–3760 kg/m 3 was compared to the corresponding values of natural aggregates in Table 1.
Environmental benefit assessment of steel slag utilization …
Steel slag is the by-product during the separation of molten steel from impurities in the steel-making furnace. The basic oxygen furnace (BOF) slag, electric arc furnace (EAF) slag, and ladle furnace (LF) slag are three major types of SS produced in the steelmaking processes.As drawn in Fig. 2, BOF slag and EAF slag are both produced …
Steel Slag
Depending on the used production technology, the steel slag can be divided into a basic oxygen steel slag, an electric arc furnace slag and a ladle furnace slag (De Brito and Saika, 2013). The steel slag is used as a secondary cementitious binder, or aggregates for road construction (Sheen et al., 2013; Manso et al., 2004).
Production of concretes using slag aggregates: Contribution …
This paper investigates the use of slag aggregates of electric arc furnace (EAFS) and ladle furnace slag (LFS) in replacement of fine and coarse conventional …
Production of artificial aggregates from steel-making slag: …
Steel slag particles can potentially be used as aggregates in concrete production. However, the volume stability of steel slag is poor, and the direct use of untreated steel slag aggregate (SSA ...
Slag Aggregate
1.5.1.6 Slag. Slag aggregates are obtained by crushing of smelter slag or by special treatment of fire-liquid slag melt (molten slag aggregates). Currently there are many types of concrete that are developed and used in construction that include metallurgical slags both as a binding component and as fillers.
Steel Slag and Recycled Concrete Aggregates: Replacing …
Various researchers are developing efforts to integrate waste and by-products as alternative materials in road construction and maintenance, reducing environmental impacts and promoting a circular economy. Among the alternative materials that several authors have studied regarding their use as partial or total substitutes for …
Characteristics of steel slags and their use in cement and …
In the US, about 60.3% of the total steel slag production is directly used as road base, while the remainder is used for asphaltic concrete (10.9%), fill (10.8%) and cement clinker production ... Use of BOF slag as aggregates in concrete. In general, concrete with BOF slag aggregate was found to have poor workability (Pang et al., ...
Production of Lightweight Aggregates for Construction …
A study shows that while using basic oxygen furnace slag as the raw material of artificial aggregates, ... Apart from these commonly used aggregate production techniques, Flashag is another patent aggregate manufactured from fly ash. These aggregates are not pelletized but sintered, and the process is considered simple …
An Overview on Utilization of Steel Slag as Road …
Steel slag can be directly used as sinter flux and iron smelting flux for the production of steel . The pretreated steel slag can be utilized directly for road …
Characteristics of ferrochrome slag aggregate and its
Ferrochrome slag aggregates (FCSAs) have similar mechanical properties as natural aggregates and are a by-product of the ferrochrome alloy industry, with a production rate of about 1.5 tons per ...
Comprehensive Analysis of Steel Slag as Aggregate for Road …
In 2017, around 1200 million tonnes of steel were produced by the integral route and around 480 million tonnes were produced by the electric route [ 5 ]. These …
Use of Steel Slag as an Alternative to Aggregate and Filler in …
Slag of iron and steel used as aggregates for asphalt roads can be recovered as by-products. The steel slag is a residue of the production process of …
Electric arc furnace granulated slag for sustainable concrete
The use of slag aggregates from iron and steel production in construction dates back to the Romans who used crushed slag from the crude iron production of that time to build their roads. Slag is particularly useful as an aggregate, due to the high mechanical resistance of the slag grains which exceeds those of many natural …
Steel slag and its applications in cement and concrete …
Use of steel Slag as coarse and fine aggregate in concrete was presented. •. Effect of curing temperature and time on concrete containing steel slag was presented. •. Different usage areas of steel slag were recommended for future studies. Abstract.
Investigation on Utilizing of Steel Slag as a Partial
The use of steel slag aggregates in concrete by replacing natural aggregates is encouraging because their effect on concrete strength is greater than that of natural river sand. For this study, a normal strength (C-25) of concrete with 0%, 15%, 30%, 45%, and 60% replacement of steel slag was utilized for 3 days, 7 days, 28 days, and 56 days of ...
(PDF) Characterization Of The Eaf Steel Slag As Aggregate For Use …
Electric arc furnace (EAF) steel slag, generated from carbon steel production process, is the most interesting. from the asphalt technology point of view. This paper aims to explore the ...
Use of blast furnace slag in cementitious materials for …
In the cement production two main ores are used: limestone rich in CaO, and clay, rich in SiO 2, Al 2 O 3, Fe 2 O 3 and MgO. ... A Systematic Literature Review, approaching the use of blast furnace slag in cementitious materials used in paving was performed, in which the physical-chemical properties and mechanical resistance were …
Sustainability for Blast Furnace Slag: Use of Some
Since the construction waste and blast furnace slag wastes are available in vast amounts in Turkey, it is economically and environmentally suitable to use these materials as aggregates in the production of more durable concrete mixtures. © 2015 The Authors. Published by Elsevier Ltd. Peer-review under responsibility of Istanbul …
Use of Steel Slag as an Alternative to Aggregate and Filler in …
Slag of iron and steel used as aggregates for asphalt roads can be recovered as by-products. The steel slag is a residue of the production process of steel. The slag is mainly composed by: silica, alumina, titanium, iron sand and combinations of calcium and magnesium oxides. The function of the slag during the steelmaking process …
[PDF] Experimental Study of Steel Slag Used as Aggregate …
Steel slag is a by-product of the steel industry and can be used potentially as aggregate in asphalt mixture. This study evaluates the use of Steel Slag Aggregates (SSA) as substitute for natural aggregates in the production of hot mix asphalt (HMA) for road construction. Based on intensive laboratory testing program, the characteristic …
Application of Steel Slag as an Aggregate in Concrete …
Utilizing treated steel slag as coarse/fine aggregate in concrete production is a high-value solution that can alleviate the worry about resource depletion and solve the negative impact of steel slag stockpiling in slag disposal yards. 4.1. Density The density of SSA is 10–50% higher than that of NA.
(PDF) Experimental Study of Steel Slag Used As Aggregate …
Steel slag is a by-product of the steel industry and can be used potentially as aggregate in the asphalt mixture. This study evaluates the use of Steel Slag Aggregates (SSA) as a substitute for natural aggregates in the production of hot mix asphalt (HMA) for …
Sustainable use of ferronickel slag fine aggregate and fly …
Ferronickel slag (FNS) is a by-product of nickel production that is used as an alternative fine aggregate. This study evaluates the workability, compressive strength, splitting tensile strength, flexural strength, modulus of elasticity and chemical leaching characteristics of concrete containing FNS from garnierite ore and fly ash.
Slag aggregates
In agriculture, slag aggregates (Ag-Slag) have been used as an agricultural material since the 1920's in all types of crop production and landscaping. The materials are used to maximise yields of cultivated crops and pasture, …
Comparative environmental life cycle assessment of
A novel process for the production of angular-shaped high strength fly ash aggregates from an energetic, and environmental perspective is presented in this paper and compared with the production of natural aggregates. This study is significant because there is an increasing demand for aggregates and no published research addressing …
CO2 activated steel slag-based materials: A review
Most part of this production is disposed on landfills however; the slag is also used as aggregates for different construction purposes such as ready-mix concrete, asphaltic concrete, road bases and surfaces, and fills (Piatak et al., 2015). 1.3. Steel slag based-materials obtained by CO 2 curing/activation
An Overview on Utilization of Steel Slag as Road Construction Materials …
Steel slag can be directly used as sinter flux and iron smelting flux for the production of steel [ 6 ]. The pretreated steel slag can be utilized directly for road construction (around 49.7% in the US), as aggregate in the manufacture of concrete or asphalt (the main recycling route), or both [ 6 ].