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Air-cooled blast furnace slag sales in 2006 were for use in road bases and surfaces (41%), asphaltic concrete (13%), ready-mixed concrete (16%), and the balance for other uses. Granulated blast furnace slag sales in 2006 were for use in cementitious materials (94%), and the balance for other uses.
If the liquid slag is air-cooled under ambient conditions, a crystalline material is formed and a hard piece is produced that can then be crushed and separated as an air-cooled blast furnace slag aggregate [3]. The physical appearance of the air-cooled slag aggregate appears suitable for use in concrete .
Nov 25, 2018· Air-cooled slag uses are many and varied, including all types of construction aggregate applications in addition to manufacture of mineral wool, cement and glass and as a soil conditioner. The principal uses of air cooled slag include road bases, asphalt concrete aggregate, concrete aggregate, structural fill, railroad ballast, and mineral wool.
This report presents available information regarding the use of air-cooled blast furnace slag (ACBFS) as coarse aggregate in concrete pavements. The report discusses ACBFS aggregate production and properties, and the properties of concrete produced with ACBFS coarse aggregate. Both the .
Three general types of slag are produced, known to the trade as air-cooled, granulated, and lightweight. Air-cooled- The bulk of the slag used today as aggregates is of the air-cooled variety. This is a form of slowly cooled slag. Many of the physical properties of solidified slag depend on the manner in which the molten material is cooled.
aggregate in concrete and water cooled granulated slag is used as a partial substitution for sand in concrete. Reports show that air cooled ferrochrome slag has gained popularity as a coarse aggregate in concrete. But the use of water cooled rochrome slag .
Blast furnace slag is allowed to slowly cool by ambient air, is processed through a screening and crushing plant and is processed into many sizes for use primarily as a construction aggregate. Common uses are as aggregates in ready-mix concrete, precast concrete, hot mix asphalt aggregate, septic drain fields and pipe backfill.
Use of Steel Slag Aggregate in Pavements . ... It is not used in cement concrete pavements or other concrete applications due to the expansive nature of the aggregates since expansion causes the concrete to crack. All users specify that the aggregate be cured in a water ... * Air-Cooled Blast Furnace Slag. ** Basic Oxygen Furnace
Concrete with air-cooled blast-furnace slag indicated higher pumping pressure than that with crushed stone due to pressure absorption, while no significant change was found for granulated blast-furnace slag concrete. It is concluded that blast-furnace slag aggregate concrete is pumpable without significant slump-loss when such aggregate does ...
This is the co-product from the reduction of iron ores to produce molten iron and molten slag. 1. When allowed to cool slowly to a crystalline rod< form It becomes a light gray vesicular rock known as Air-Cooled Blast Furnace Slag. Principle uses include:
Ramachandran et al. [9] Stated that air-cooled . slag is suitable as an aggregate in concrete. Also, slag . ... the volume stability of steel slag concrete was best. But when the content of steel ...
The use of air-cooled blast furnace slag in the production of concrete can have economical motivations—acquiring ACBFS, as a waste that is industrially generated, is cheaper than obtaining natural aggregates from a quarry. Additionally, the reuse of air-cooled blast furnace slag has
Resources are depleting day by day due to non consumptive use by the mankind. Blast furnace slag has a great potential as it can be used as an artificial aggregate. Keeping this in view, the present study the present study encourages the utilization of waste material such as air cooled blast furnace slag (ACBFS) and fly ash in concrete.
Slag : Air-cooled blast furnace slag (ABS) What is ABS? ABS is a crystalline by-product produced by the solidification of molten blastfurnace slag. Production and Processing. Iron production is via a continuous batch process with the iron and slag produced in .
Pelletized blast furnace slag, in contrast to air-cooled and expanded blast furnace slag, has a relatively smooth texture and rounded shape. Grinding reduces the particle size to a cement fineness for use as a hydraulic cement, which is typically less than 3500 cm 2 /g. (8)
There is no risk of alkali-aggregate reaction, and this slag contains no clay or organic impurities. As a result, it is also used as a concrete aggregate in the same way as natural aggregate. Granulated blast furnace slag Just like air-cooled blast furnace slag, this slag has a hydraulic property and there is no risk of alkali-aggregate reaction.
Sep 30, 2019· The use of slag in concrete has several benefits, including reduced energy, reduced greenhouse gas emissions, and reduced use of raw materials. Various types of slag are produced: - Blast-furnace slag—The nonmetallic product, consisting essentially of silicates and aluminosilicates of calcium and of other bases, that is developed in a molten condition simultaneously with iron in a blast .
Air cooled slag is not cementitious. Pelletized or expanded slag results when molten slag is quickly cooled using water or steam. It produces a lightweight aggregate that can be used for concrete masonry, lightweight fill, or can be ground into a cementitious product.
If high-early strengths are unnecessary, the Contractor may use granulated iron blast-furnace slag as a partial replacement for Portland cement in concrete if the following limits are met: a. Replace no more than 50 percent of the cement by weight. b. Replace the cement with slag at the rate of 1.0 lb (1.0 kg) of slag to 1.0 lb of cement.
Provide coarse aggregate for asphalt concrete base used in flexible pavements consisting of CCS, gravel, or crushed air-cooled slag. Provide fine aggregate for asphalt concrete base consisting of natural sand or sand manufactured from stone, gravel, or air-cooled slag. B. Physical properties.
This material is commonly called blast furnace rock slag, and it is a crystalline rock-like material that has little cementitious value and is essentially inert in concrete. Rock slag is suitable for use as aggregate in concrete, as per ASTM C33 (2013). Crushed air-cooled slag has been used as an aggregate in the manufacture of commercial ...
Air-cooled blast-furnace slag: The material resulting from the solidification of molten blast-furnace slag under atmospheric conditions. Subsequent cooling may be accelerated by application of water to the solidified surface. (This material can be mined and crushed for use as aggregates in concrete or fill material; it is not cementitious).
Slag cement is commonly found in ready-mixed concrete, precast concrete, masonry, soil cement and high temperature resistant building products. While there are many applications and benefits of slag cement, a few are highlighted below and detailed information sheets are located here.
Use of Air-Cooled Blast Furnace Slag as Coarse Aggregate in Concrete Pavements—A Guide to Best Practice. This document contains recommendations for best practices related to the use of air-cooled blast furnace slag (ACBFS) as coarse aggregate in concrete pavements.
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