Crushing Of Slag To Use It In Cement

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Effects of Ground Granulated Blast Furnace Slag in

of the overall cement matrix. Using slag cement as a replacement material for OPC changes the rate of strength gain because the hydration properties of slag cement are different from OPC. Slag cement is a latent hydraulic material, meaning that with use of this material, the rate of strength gain will be lower when compared to OPC concrete.

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Characteristic of melted slag from wrought iron industry

Slag is known have a high percentage of silica and ferric oxides, which gives pozzolanic activities that suitable to use as cement blended product. Slag waste used in this work is obtained from the wrought iron industry from Pakis district, Magelang Regency, Central Java, Indonesia.

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Electric Arc Furnace Slag as Coarse Recycled Aggregate for

Electric arc furnace (EAF) slag is a by-product of steel production in electric arc furnaces. Several studies have tried to demonstrate its suitability in civil engineering application, such as in bituminous mixtures and cement-based materials, due to its good physical, chemical and mineralogical properties. Particularly the re-use as coarse aggregate for concrete production has been shown to

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Steel

The cement uses only 15-30% of OPC clinker, 30-40% of steel-slag and 40-50% of blastfurnace slag (BFS), allowing for great reductions in GHG emissions, consumption of natural resources and energy use by between 70% and 85%. The characteristics of steel-slag as a supplementary cementitious material are also discussed.

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(PDF) IRJET

Impact value and crushing value of ferrochrome slag are more in comparison with that of Conventional Coarse aggregate indicating that material is of good quality and suitable for concrete making. Hence, Ferrochrome slag can be considered for use as conventional coarse aggregate in concrete.

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Copper slag becomes substitute in concrete – Quarry

Jan 07, 2010The vast amount of copper slag, a by-product obtained during smelting and refining of copper, was for many years treated as waste with no further use thereafter. Holcim Singapore has found a novel way of encapsulating copper slag into concrete, reducing the use of natural sand in cement production and avoiding the accumulation of copper slag in landfill.

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Properties and Uses of Steelmaking Slag – IspatGuru

Nov 14, 2018The compressive strength of concrete using steelmaking slag as fine aggregates is around 1.1 to 1.3 times of common concrete. Further, steelmaking slag concrete shows similar fire resistance to the river aggregate mixture up to 400 deg C, and much improved fire resistance at high-temperature ranges.

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Using foundry slag of ferrous metals as fine aggregate for

Nov 01, 2018Thus, it was necessary to transform the coarse particles of slag through a fragmentation process by crushing, obtaining a particle size compatible for use as fine aggregate in concrete. In Fig. 1 a piece of slag, before the crushing process, is shown. Download : Download high-res image (411KB) Download : Download full-size image; Fig. 1.

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Different Types Sizes of Aggregate for Concrete

Aug 11, 2018The 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. Nowadays, slag is still used to build roads. However, slag use is not limited to roads anymore, but slag aggregates are widely used in all kinds of civil works.

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CONCRETE Optimizing the Use of Fly Ash in Concrete

Berkeley (Davis 1937).The last 50 years has seen the use of fly ash in concrete grow dramatically with close to 15 million tons used in con-crete, concrete products and grouts in the U.S. in 2005 (ACAA 2006). Historically, fly ash has been used in concrete at levels ranging from 15% to 25% by mass of the cementitious material component.The actual

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XRD

The main hydration products of the slag-cement are C-S-H gel, Ca(OH) 2, the sulpho-aluminate hydrate phases AFt and AFm and a Mg, Al-rich hydroxide phase. Fig. 1. Transmission electron micrograph showing foil-like Op C-S-H in a water-activated slag paste hydrated for 3 1/2 years at 40C (W/S = 0.4) (by I.G Richardson: The nature of C-S-H in

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Low CO2 Concrete

Slag cement requires nearly 90 percent less energy to produce than an equivalent amount of Portland cement. Reducing the use of Portland cement in concrete by substituting a portion of it with slag reduces the embodied energy in a cubic yard of concrete by 30 to 48 percent. Reduced Material Extraction. Raw materials for Portland cement are

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Sustainability of Concrete Using Copper Slag as

One such material which has a high scope for use in concrete is Copper Slag. Copper Slag Copper slag produced during the matte smelting and refining of copper ore, during which, the iron present in the copper concentrate combines chemically at 1200C with silica present in flux materials such as river sand/silica sand/ quartz fines to form

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UG

The primary issue associated with the use of slag cement is the reported loss of durability (salt scaling resistance) for exposed Portland cement concrete containing more than about 25 percent slag cement. It is unknown if any U.S. agencies are conducting specific research into this concern (some research has been reported in Canada).

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4 Recycled Crushed Materials to Start Using in Your Design

Jun 15, 2018Copper slag is primarily black in color with flecks of red and lighter greys, resulting in a pleasant and versatile aesthetic that is mostly used as aggregate in precast concrete to increase its recycled content. Many prestigious projects have utilized our copper slag recycled materials, such as Chicago's Navy Pier. The designers on the

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The Health Risk of SLAG

The St. Lawrence Cement Company in Camden, New Jersey is doing the same thing that ORCEM proposes to do in Vallejo. It would ship in blast furnace slag and grind it into a very fine powder for use as a cement additive. However, it never called itself a GREEN business or Green Cement. The cement []

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Usage of steel slag in concrete as fine and/or coarse

In this study, the use of steel slag as fine and/or coarse aggregate in concrete is investigated. For this purpose, 12 different concrete mixtures with different water/cement ratios of 0.40, 0.55 and 0.70 which include steel slag aggregate as

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USING OF FERRO

The slag also includes Cr and Fe oxides and calcium oxide. Common phases in the slag are glass, spinels (Al 2 O 3–MgO) and forsterite (MgO–SiO 2), and small amount of CaO Table 1.1: Trace Elements in Ferrochrome Slag 2. MATERIAL PROPERTIES 2.1 Cement Cement used in this experimental program is Ordinary Portland cement (OPC) of 53-grade cement.

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Ground granulated blast furnace slag ggbs

May 26, 2016Conclusion Blast Furnace Slag concrete mix having various cement replacement level up to 30% Exhibited satisfactory results for compressive strength. The optimum use of slag in the concrete is observed to be 30% of cement. Slag concrete with 30% cement replacement shows 19% higher compressive strength than OPC mortar after 28 days curing. Use

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The use of pozzolans in concrete

Pozzolans replace cement pound for pound. Depending upon the particle size, chemical composition and dosage, different pozzolans will affect the concrete strength differently and at different times during curing. Left to right: Class C fly ash, Metakaolin, Silica Fume, Class F fly ash, Slag, Calcined Shale. From the Portland Cement Association

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Use of steel slag in concrete mixtures

applicability of using steel slag aggregates in concrete mixes in Qatar. Five trial concrete mixes were prepared. One concrete mix composing of gabbro coarse aggregates was designated as the control mix. Four other concrete mixes were prepared and

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A Guide to the Use of Steel Furnace Slag in Asphalt and

slag based products. The other publications were "A Guide to the Use of Slag in Roads" published in June 1993 and "A Guide to the Use of Iron Blast Furnace Slag in Cement and Concrete" published in April 1997. The Australasian Slag Association is grateful for the co-operation and valuable input received

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Mechanical Properties of Concrete Using Steel Slag

(2002) have indicated that the durability of steel slag cement concrete was better than the same for crushed limestone aggregate. K.G. Hiraskar and ChetanPatil (2013), investigated the use of blast furnace slag as aggregates in concrete. The results showed that it has properties similar to natural aggregates and it would not cause any harm if

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233R

The use of slag cement as a cementitious material dates back to 1774, when a mortar was made using slag cement in combination with slaked lime (Mather 1957). In 1862, a granulation process was proposed to facilitate removal and handling of iron blast-furnace slag leaving the blast furnace. The use of granulation produced glassy material that played

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WHY USE FLY ASH AND SLAG IN CONCRETE?

Fly ash and Slag will typically be 18% cheaper than Portland cement. When a mix includes 20% fly ash, this will provide savings of 3.5% in cost. The advantage of slag is its ability to substitute more of cement. Giving savings of up to 9% in cement cost with a 50% slag to cement content ratio.

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Standard Specification for Slag Cement for Use in Concrete

1.1 This specification covers slag cement for use as a cementitious material in concrete and mortar. Note 1: The material described in this specification may be used for blending with portland cement to produce a cement meeting the requirements of Specification C595/C595M or as a separate ingredient in concrete or mortar mixtures.

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Use of steel slag in concrete mixtures

applicability of using steel slag aggregates in concrete mixes in Qatar. Five trial concrete mixes were prepared. One concrete mix composing of gabbro coarse aggregates was designated as the control mix. Four other concrete mixes were prepared and

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Electric Arc Furnace Slag as Coarse Recycled Aggregate for

Electric arc furnace (EAF) slag is a by-product of steel production in electric arc furnaces. Several studies have tried to demonstrate its suitability in civil engineering application, such as in bituminous mixtures and cement-based materials, due to its good physical, chemical and mineralogical properties. Particularly the re-use as coarse aggregate for concrete production has been shown to

Get price

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Possible Uses of Steelmaking Slag in Agriculture: An

concrete and in civil engineering works, exhibiting better long-term strength, better resistance to chemical attack, and it brings down the cost of cement. v The Air-cooled BF Slag (ABFS) is discharged to a cooling yard and naturally cooled with moderate sprinkling. The crystallized slag, after crushing, sieving and removing

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Experimental Study on Concrete by Replacing Fine Aggregate

The beneficial use of by-products in concrete technology has been well known for many years and significant research has been published with regard to the use of materials such as coal fly ash, pulverized fuel ash, blast furnace slag and silica fume as partial replacements for Portland cement.

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