Utilization of Steel Slag in Concrete as Coarse Aggregate
The workability of the controlled concrete (prepared using coarse aggregates) and the steel slag mixed concrete (prepared by replacing 45 % of coarse aggregates by steel slag aggregate) is similar
Study on Recycling of Steel Slags Used as Coarse and Fine Aggregates …
Studies indicate that steel slag formed by crushing and proper process has a similar shape to the natural aggregates and better mechanical properties, so ... Replacement of steel slag as an aggregate contributes to increasing dynamic stability by SS-6 increasing by 34% compared to BA-6 and SS increasing by 43% compared to BA. It shows that ...
Steel Slag
Steel slag can be processed into a coarse or fine aggregate material for use in dense- and open-graded hot mix asphalt concrete pavements, (1,2,3) and in cold mix or …
(PDF) Comprehensive Analysis of Steel Slag as Aggregate …
When used as an asphalt aggregate, bitumen coating formed on aged slag particles limits the hydration of the calcium and magnesium oxides due to reduced water contact [23]; and suppresses the ...
Analyzing the Mechanical and Durability …
From the comparison results in Figure 5 regarding the crushing values of steel slag, basalt, and limestone coarse aggregates, it can be seen that the crushing value of steel slag is not superior to that of basalt or limestone …
Effect of Carbonation Treatment on the Properties of Steel Slag Aggregate
Crushing Value. The steel slag aggregate with a size range of 9.5–13.2 mm was utilized in the experiment, following the methodology for determining the crushing index value as stipulated in the test methods of highway engineering (JTG E42-2005) . The mould containing the sample was placed on the press, and the pressure testing machine was ...
Preparation, microstructure and property of carbonated artificial steel
The carbonated artificial steel slag aggregates had reasonable physical properties in terms of crushing value, density, and water absorption. The carbonated artificial steel slag aggregates had densities in the range of 1230–1300 kg/m 3, being lower than the natural limestone which had a density of 1450 kg/m 3.
Autoclaved steel slag coarse aggregate: A potential solution …
The autoclaved steel slag aggregates (ASA) had apparent density, water absorption, and crushing values of 3300 kg/m 3, 1.91%, and 8.0%, respectively, while the original steel slag aggregate (OSA) had corresponding values of 3150 kg/m 3, 3.25%, and 10.3%. Evidently, after autoclaving, the SA's apparent densities slightly increased while its ...
Effect of Carbonation Treatment on the Properties of Steel Slag Aggregate
Crushing Value . The steel slag aggregate with a size range of 9.5–13.2 mm was utilized in the experiment, following the methodology for determining the crushing index value as stipulated in the test methods of highway engineering (JTG E42-2005) . The mould containing the sample was placed on the press, and the pressure testing machine was ...
Effects of particle gradation and material proportions on the
Bruno Guimaraes Delgado et al. [14] demonstrated that the addition of inert steel slag (ISAC) aggregate to granite aggregate can significantly improve the crushing resistance, stability and elastic modulus of ballast. These improvements are due to the good interlocking properties of steel slag particles and less surface wear.
Steel Slag Processing
Steel Slag Processing line adopts jaw crusher for primary crushing, and uses hydraulic cone crusher for secondary and tertiary crushing, offering high crushing efficiency, low wear, energy saving and environmental protection, it has the …
Effect of Carbonation Treatment on the Properties …
Steel slag is the waste slag generated after steel smelting, which has cementitious activity. However, untreated steel slag can damage the integrity of steel slag concrete due to its harmful expansion. This study prepared …
Sustainable Open-Graded Friction Course asphalt mixes with steel slag …
The aggregates used in this study were crushed granitic aggregates and steel slag aggregates. A stone crusher plant in the Tumakuru District provided natural aggregates of various sizes. The steel slag aggregates were sourced from a steel plant in Tumakuru. As a binder, Viscosity grade 30 (VG-30) was chosen and obtained from the Mangaluru District.
Utilizing steel slag to prolong the durability of reinforced …
The steel slag aggregate increases the durability of concrete under chloride attack, which allows the matrix to withstand the internal stresses caused by the corrosion process. ... Aggregates - Crushing Resistance Agregados, Rio de Janeiro, 2013. Google Scholar [47] Brazilian Association Of Technical Standards, NBR 7809 - Coarse Aggregate ...
The use of steel slag aggregate to enhance the mechanical …
Maslehuddin et al. [27] presented a comparative study of steel slag aggregate and crushed limestone concretes; where, only part of the coarse aggregates is replaced by slag aggregates. The study concluded that the compressive strength of steel slag aggregate concrete is marginally better than that of crushed limestone aggregate concrete.
Preparation, microstructure and property of carbonated artificial steel
Liu et al. [22] developed artificial aggregates using steel slag, furnace slag, and biochar and pointed out that the CO2 adsorptive ability of biochar under low concentrations was conducive to the ...
Slag Aggregate
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 …
Laboratory investigation on road performances of asphalt …
Compared with basalt and limestone aggregates, steel slag shows higher density, water absorption, adhesion to asphalt, polishing value, fine particle content (volume percentage), immersion expansion rate, and has a smaller crushing value; the utilization of steel slag as an aggregate in asphalt mixtures is practicable due to its excellent ...
Process Improvement on the Gradation Uniformity of …
construction. A new method of steel slag aggregate processing is proposed to obtain the high quality steel slag aggregate with different specifications. Besides, the performances of the obtained ...
Review Accelerated carbonation of steel slag: A review of …
Typically, BOFS has high alkalinity [33], [34], low crushing values, a porous structure, and high density because FeO is relatively high [35]. BOFS powder has been widely used in the production of cement clinker. ... Moreover, when the steel slag aggregate with added EDTA was used in concrete casting, the compressive strength was 5.2–13.3 MPa ...
Slag crushing
When crushed and sized properly, slag can be sold and used as valuable material in many different ways, for example, as aggregates. However, since slag usually contains uncrushable objects, it is typically considered a challenging feed …
Evaluation of the crushing characteristics of industrial waste
Crushing of industrial waste aggregates is less dependent on its initial density. ... These non-traditional materials include fly ash, steel slag, recycled concrete aggregates and other industrial wastes. Being newly introduced to the construction field, the properties of these materials are not completely revealed till now. ...
A review of the application of steel slag in concrete
This disparity can be attributed to the porous microstructure of steel slag. The crushing value of BOFS (12 - 15%) is equal to or slightly lower than that of natural aggregates such as granite (17%) and limestone (13.9%). This indicates that the resistance of BOFS to fragmentation under compressive loads is similar to or slightly better than ...
Crushing value of steel slag aggregates after …
... prepared steel slag aggregate after carbonation treatment has a low expansion rate, good volume stability, can be better used in the building materials industry, especially in concrete...
Steel Slag Processing
The pile of steel slag occupies a huge area of arable land, and causes environmental pollution; moreover, 7%-15% steel can be recycled from steel slag. After being processed, steel slag can be used as smelter flux, cement raw material, construction aggregate, foundation backfill, railway ballast, road pavement, brick, slag fertilizer and soil ...
Comparison of properties of steel slag and crushed limestone aggregate …
The steel slag aggregate, presently produced by a steel plant in Saudi Arabia is utilized in asphalt concrete. The steel slag is produced during the direct reduction of iron in an electric arc furnace. ... It disintegrates to smaller size fractions, due to rapid cooling, thereby necessitating minimal crushing to produce aggregates of the ...
Effects of ethylenediamine tetra-acetic acid (EDTA) on the …
Crushing value of the carbonated steel slag aggregates was determined referring to the Chinese National Standard GB/T 14,685–2011 [36]. 3 kg of steel slag aggregates were filled in a cylinder with a diameter of 152 mm. Afterwards, the pressure was loaded on the aggregates in the cylinder with a loading rate of 1 kN/s until it reached 200 kN ...
Effect of Carbonation Treatment on the Properties of Steel Slag Aggregate
After carbonation, the steel slag aggregate had a pulverization rate of 2.4%, an expansion rate of 0.23%, a crushing value of 23%, and a carbon sequestration efficiency of 11.27% per unit weight of aggregate.
Selective crushing, enrichment by friction properties and
ACV determination included the preparation of the aggregate sample of at least 4 kg weighing (Fig. 12, a), drying to a constant mass (Fig. 12, b), placing the aggregate sample into a steel cylinder (Fig. 12, c), crushing the aggregate in a steel cylinder on a hydraulic press with a force of 200 kN (Fig. 12, d), pouring crushed aggregate out of ...
Autoclaved steel slag coarse aggregate: A potential solution …
PDF | On Aug 3, 2023, Zhijun Chen and others published Autoclaved steel slag coarse aggregate: A potential solution for sustainable concrete production | Find, read and cite all the research you ...