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steel slag expansion

steel slag expansion

Use of steel slag as a granular material: Volume expansion ...

2010-12-15  Therefore, the actual volume expansion of free lime in steel slag after complete reaction is 132.32–4.54% = 127.78%. 3.3. An equation for prediction of steel slag volume expansion. From the expansion mechanism of free lime, an equation for estimating the potential volume expansion of steel slag can be deduced.

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Use of steel slag as a granular material: Volume expansion ...

For steel slag with particle sizes between 4.75 and 9.5 mm, the final volume expansion rate of the modified steel slag was 46% lower than that of unmodified steel slag.

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Steel furnace slag aggregate expansion and hardened ...

2015-7-1  1. Introduction. Steel furnace slag (SFS) is a waste by-product of steel production, with a worldwide SFS production of 150–230 million tons in 2012 .Modern SFS is produced in either a basic oxygen furnace (BOF), where iron is converted to steel, or an electric arc furnace (EAF), where steel is produced by melting scrap steel .BOF slag is also known as Linz-Donawitz (LD) or LD-converter slag.

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Use of steel slag as a granular material: Volume expansion ...

The theoretical equation for predicting volume expansion of steel slag is deduced based on both chemical reaction and physical changes of free lime in steel slag during the hydration process. Laboratory volume expansion testing is conducted to compare the results with the theoretical volume expansion. It is proved that they correlated well.

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Steel Slag - an overview ScienceDirect Topics

For steel slag used as a coarse aggregate in a bound condition, or in a rigid matrix, such as PCC, the resulting integrity and volume stability are basically controlled by the minimum allowable stress of the matrix materials, cement mortar for instance, and the maximum expansion stress, which can be deduced from the expansion force based on ...

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Determination of the expansion force of coarse steel slag ...

The expansion. force of a unit volume of slag given by Eq. (2) is equal everywhere. in a given volume of steel slag, i.e., f. ex. is a constant for a given slag. sample. Note that

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Standard Test Method for Potential Expansion of Steel

D8378 / D8378M-21 Standard Test Method for Potential Expansion of Steel Slag from Hydration Reactions by Autoclave . Products and Services / Standards Publications / Standards Products. If you are an ASTM Compass Subscriber and this document is part of your subscription, ...

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Geotechnical and Environmental Impacts of Steel Slag

2014-12-4  properties of steel slag. Leaching of metals from steel slag has also been studied (Fallman et al. 2000, Apul et al. 2005, Gomes and Pinto 2006, Huijgen and Comans 2006, Mayes et al. 2008, De Windt et al. 2011). However, there is a lack of information on the flow of

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Slag Aggregate - an overview ScienceDirect Topics

The ASTM D4792-00 Standard Test Method for Potential Expansion of Steel Slag Aggregate from Hydration provides the method to determine the volumetric expansion as an indicator to evaluate the use of steel slag as an unbound granular material. However the volume expansion data are not directly related to the expansion behavior of steel slag ...

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Steel furnace slag aggregate expansion and hardened ...

2015-7-1  1. Introduction. Steel furnace slag (SFS) is a waste by-product of steel production, with a worldwide SFS production of 150–230 million tons in 2012 .Modern SFS is produced in either a basic oxygen furnace (BOF), where iron is converted to steel, or an electric arc furnace (EAF), where steel is produced by melting scrap steel .BOF slag is also known as Linz-Donawitz (LD) or LD-converter slag.

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Determination of the expansion force of coarse steel slag ...

The expansion. force of a unit volume of slag given by Eq. (2) is equal everywhere. in a given volume of steel slag, i.e., f. ex. is a constant for a given slag. sample. Note that this applies ...

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Study on expansive property of steel slag expansive cement

The hydration of free-lime in steel slag leads to the hydrates local accumulation, the volume increase of void and the apparent volume expansion. Discover the world's research 20+ million members

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UG-Mat Steel Slag Recycled Materials Resource Center

The potential for steel slag expansion should be tested in accordance with ASTM D4792 in a 7-day water immersion test. A maximum expansion limit of 1 percent is recommended. Steel slag aggregate hot mix asphalt immersion expansion testing on

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DISCUSSION OF BUILDING DAMAGE FROM EXPANSIVE

discussion of building damage from expansive steel slag backfill. the results are described where an untreated steel slag backfill increased in volume, irregularly, and caused considerable damage to the floor and walls of a one-sotry industrial building.

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Slag aggregates Tarmac

Steel slag and old bank slags may undergo volumetric expansion in the presence of water. The risk of damaging expansion occurring when using steel slag produced in modern processes is minimised by a combination of careful production control and processing. Air-cooled blast furnace slag is non-expansive.

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"Properties and utilization of steel slag in engineering ...

This research is applicable to the solution of problems encountered in the application of Australian made BOS slag in engineering construction. The general chemical and physical properties, in patticular F-CaO content variation and volume expansion, were investigated. The causes responsible for expansion of steel slag are analysed theoretically by the author in an attempt to clarify the causes ...

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Aggregate from waste steel slag: quality protocol - GOV.UK

Always check the weathering time in line with the expansion testing requirements in BS EN 1744-1, for the product you intend to make. ... Quality protocol compliant steel slag aggregate will ...

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Standardization of iron and steel slag products : NIPPON ...

2020-10-18  Technical Standards for Port and Harbor Facilities, and Explanations Thereof (2007 revision) Nippon Slag Association and Coastal Development Institute of Technology. Guidebook for the Use of Iron and Steel Slag in Port and Harbor Construction (2000) Coastal Development Institute of Technology. Technical Manual for the Use of Granulated Slag for ...

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Use of steel slag as a granular material: volume expansion ...

The theoretical equation for predicting volume expansion of steel slag is deduced based on both chemical reaction and physical changes of free lime in steel slag during the hydration process. Laboratory volume expansion testing is conducted to compare the results with the theoretical volume expansion. It is proved that they correlated well. It is furthermore experimentally

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Study on expansive property of steel slag expansive cement

Chemical and physical properties and expansive property have been studied for steel slag expansive cement. The influence of steel slag proportions and

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Expansion Level of Steel Slag Aggregate Effects on Both ...

Steel slag was then used as aggregate in HMA to verify the effects of its expansion characteristics on the volumetric and mechanical performance of the asphalt mixture. Four different asphalt mixtures were designed based on Marshall mix design, using asphalt cement (pen. grade 50/70), natural aggregate (granite), and steel slag (in three ...

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DISCUSSION OF BUILDING DAMAGE FROM EXPANSIVE

discussion of building damage from expansive steel slag backfill. the results are described where an untreated steel slag backfill increased in volume, irregularly, and caused considerable damage to the floor and walls of a one-sotry industrial building.

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Effects of Moisture on Surface Chemistry of Steel Slags ...

A steel slag expansion test was performed according to ASTM D-4792-88. In this procedure steel slag specimens were prepared using the standard Proctor method and stainless steel molds with perforated base plates to allow for moisture movement during the immersion period. The specimens were then immersed in the water

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Steel Slag - Material Description - User Guidelines for ...

2016-3-8  The steel slag produced during the primary stage of steel production is referred to as furnace slag or tap slag. This is the major source of steel slag aggregate. After being tapped from the furnace, the molten steel is transferred in a ladle for further refining to remove additional impurities still contained within the steel.

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Hydration Mechanism of Sustainable Clinker-Free Steel

2021-3-5  Moreover, unlike GGBFS, steel slag cannot be utilized extensively in cement due to technical barriers including low hydration, volume expansion, and degradation of mechanical properties.15,16, – 17 The principal chemical components of steel slag are calcium, iron, aluminum, and magnesium oxides.18 The key mineral components include free-CaO ...

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Recent Improvements in Quality of Steel Slag Aggregate

mix design and production. Steel slag can serve as good aggregate for use in hot-mix asphalt if the volume expansion of the slag is controlled. Performance-based testing of steel slag aggregate, particularly volume stability, is recommended as a measure of the aggregate quality. Prac­ tices at the steelmaker and the slag processor were examined.

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QUICK REFERENCE GUIDE 3 - 2014 Steel Furnace Slag

2016-1-17  Steel furnace slag (SFS) is the co-product of the basic . oxygen steel making process (BOS). The slag is removed from the vessel after the exothermic refinement of molten iron and recycled steel in the presence of fluxes and oxygen. SFS is a co-product of the conversion process of molten iron . to steel in basic oxygen steelmaking within an ...

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Standardization of iron and steel slag products : NIPPON ...

2020-10-18  Technical Standards for Port and Harbor Facilities, and Explanations Thereof (2007 revision) Nippon Slag Association and Coastal Development Institute of Technology. Guidebook for the Use of Iron and Steel Slag in Port and Harbor Construction (2000) Coastal Development Institute of Technology. Technical Manual for the Use of Granulated Slag for ...

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