uses of steel slag and fly ash

Efficient use of steel slag in alkali-activated fly ash ...

Oct 30, 2020  In order to find an effective way to use steel slag (SS), this study explored the possibility of using SS and ground granulated blast-furnace slag (GGBS) as a composite additive in alkali-activated high calcium fly ash (FA) binder.

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(PDF) Use of Soil-Steel Slag-Class-C Fly Ash Mixtures in ...

The average study: 5% steel slag-5% Class-C fly ash, 7% steel slag- unconfined compressive strength of the samples was 3% Class-C fly ash and 8% steel slag-2% Class-C fly ash 282.9 kPa (41 psi). Since INDOT typically requires a by weight of soil.

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Use of Soil-Steel Slag-Class-C Fly Ash Mixtures in ...

fly ash and soil-steel slag-blast furnace slag mixtures indicated higher water content and lower maximum dry unit weight than those obtained from the compaction curve of the in situ clayey soil. This trend is similar to that observed in lime treated soils. 8. The two-day unconfined compressive strength of the soil-7% steel slag-3% Class-C fly ...

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Why use Fly Ash and Slag in Concrete? - Bay-Lynx ...

Although set times are prolonged with fly ash, in just 28 days, the strength of the concrete will surpass the same mix without the fly ash. Slag is similar to fly ash in that it is finer than standard Portland cement and is also cheaper as it is a process byproduct. It is is produced by the steel production industry.

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Use of Steel Slag in Subgrade Applications

EAF(L) slag and mixtures of steel slag and Class-C fly ash can be used in the design of various types of geotechnical projects, such as small roads and highway embankments. Based on the experimental results, we suggest the use of mixtures of BOF slag and 10% Class-C fly ash and of EAF(L) slag and 5-10% Class-C fly ash in

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The Difference in Slag Cement and Fly Ash - Slag Cement News

Once a good relationship with a supplier is established, slag cement can be used at a higher percentage than fly ash. In most cases, slag cement can be used as a 30-50% replacement to portland cement, reducing the carbon impact of the concrete. To check for suppliers in your area, use the SCA’s slag

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Fly ash and slag - ScienceDirect

Oct 01, 2019  Granulated blast furnace slag (GBFS) and fly ash (FA), mainly siliceous [, , , , , ], are the most known and widely used supplements of Portland clinker. The use of GBFS started in 1865 in Germany , while the use of fly ash is dated back to the beginnings of the 20th century .

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Industrial wastes: Fly ash, steel slag and phosphogypsum ...

Feb 01, 2020  Steel slag, phosphogypsum, and fly ash can serve a key role to mitigate the methane and nitrous oxide emissions from the paddy fields. Besides, some of the nutrients present in these wastes can also provide additional benefits to paddy soils. The steel slag, a potential industrial waste, has been studied specifically in various paddy growing ...

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(PDF) Use of Fly Ash and Slag in Concrete: A Best Practice ...

This Best Practice Guide shows that concrete in corporating fly ash and slag in proportions less. than 20 to 30%, and 25 to 35%, respectively, is generally considered equivalent to portland ...

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Slag cement with fly ash

Time of initial set is influenced by the use of slag cement and fly ash. Concrete made with slag cement can have faster set times than concrete made with fly ash (Figure 2). Pumpability and Finishability. Pumpability with slag cement and fly ash is generally improved

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Use of soil-steel slag-class-C fly ash mixtures in ...

Dec 07, 2012  The following mixtures of steel slag and Class-C fly ash were considered in this study: 5% steel slag-5% Class-C fly ash, 7% steel slag-3% Class-C fly ash and 8% steel slag-2% Class-C fly ash by weight of soil. Since the Class-C fly ash used in this study is expensive, a 7% steel slag-3% blast furnace slag mixture by weigh of soil was also ...

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Efficient use of steel slag in alkali-activated fly ash ...

In alkali-activated fly ash-GBFS-steel slag ternary system by Song et al. [61], water glass with a modulus of 1.6 was used as activator, and composite additive of GBFS-steel slag varied from 10% ...

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USE OF GRANULATED BLAST FURNACE SLAG, STEEL SLAG

USE OF GRANULATED BLAST FURNACE SLAG, STEEL SLAG AND FLY ASH IN CEMENT-BENTONITE SLURRY WALL CONSTRUCTION . Talefirouz, Davood . M.Sc., Department of Civil Engineering . Supervisor: Prof. Dr. Erdal Çokça. January 2013, 89 pages . Slurry walls have been widely used for more than 25 years to control the migration of contaminants in the subsurface.

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(PDF) Use of Fly Ash and Slag in Concrete: A Best Practice ...

This Best Practice Guide shows that concrete in corporating fly ash and slag in proportions less. than 20 to 30%, and 25 to 35%, respectively, is generally considered equivalent to portland ...

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Utilization of Steel Slag and Fly Ash in Rigid Pavement ...

Feb 22, 2017  We have used in these studies fly ash and steel slag also among the other components of concrete: A. Cement: In these studies, ordinary Portland cement of 53 grades has been selected to be used

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Coal fly ash and steel slag valorisation throughout a ...

Sep 18, 2017  Starting materials. Two different wastes were used in the glass formulation, viz., fly ash and metallurgical slag. Moreover, Na 2 CO 3 was added to the glass composition to assist the melting process.. The fly ash used in this investigation was originated from Petacalco coal-fired power plant, located in La Unión, Guerrero State, Mexico.

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Use of Soil-Steel Slag-Class-C Fly Ash Mixtures in ...

Use of steel slag, fly ash and blast furnace slag in road applications, such as in subgrade stabilization projects, can be a cost-effective alternative to lime stabilization in some cases. In addition, use of large quantities of these underutilized industrial by-products in these types of applications helps to reduce the need for new disposal ...

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3D printing concrete made from fly ash and steel slag ...

Feb 05, 2018  Fly ash consists of fine particles of fuel that are driven out of coal-fired boilers, while steel slag is by-product of the steel industry, left over after a metal is separated from its raw ore. Both materials have been used as additive to cement before, but are now used together with only the addition of some chemicals to make a concrete like ...

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Steel Slag Research Papers - Academia

Dif erent amount of steel slag, i.e. 4, 8 and 12% with dif erent amount of fly ash, i.e. 3, 6 and 9% were used to stabilize the soft soil. The performance of steel slag with fly ash modified soil was evaluated using compaction compression permeability and index properties test.

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CONCRETE Optimizing the Use of Fly Ash in Concrete

fly ash will be a function of wide range of parameters and must be determined on a case-by-case basis. This report discusses issues related to using low to very high levels of fly ash in concrete and provides guidance for the use of fly ash without compromising the construction process or

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Properties and Uses of Steelmaking Slag – IspatGuru

Nov 14, 2018  When a mixture of fly ash, powder of steelmaking slag and cement clinker is used to prepare composite cement then it can be noticed that a certain amount of steelmaking slag admixture in cement can reduce the porosity, improve pore distribution and increase the consistency of cement.

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Study on The Thermal Properties of Concrete Containing ...

Slag, Fly Ash and Steel Reinforcement Bekir Erdem Bas In this study, the thermal and mechanical properties of two types of concrete were measured. The first type contained ground granulated blast furnace slag, and the second type contained Class F fly ash. The compressive and splitting tensile strength, static elastic modulus, thermal conductivity,

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A review of steel slag usage in construction industry for ...

Jan 20, 2016  About 100–150 kg SS is co-produced for 1000 kg steel, and a huge amount of slag storage is generated annually worldwide. Despite the problems associated with SS, this storage should be evaluated for sustainable development, and it has many possibilities for use in the cement and concrete industry (Lizarazo-Marriaga et al. 2011).Millions of tons of SS are produced in iron and steel

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Uses, Benefits, and Drawbacks of Fly Ash in Construction

Jul 08, 2021  Currently, more than 50 percent of the concrete placed in the U.S. contains fly ash. Dosage rates vary depending on the type of fly ash and its reactivity level. Typically, Class F fly ash is used at dosages of 15 to 25 percent by mass of cementitious material, while Class C fly ash is used at dosages of 15 to 40 percent.

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Efficient use of steel slag in alkali-activated fly ash ...

In alkali-activated fly ash-GBFS-steel slag ternary system by Song et al. [61], water glass with a modulus of 1.6 was used as activator, and composite additive of GBFS-steel slag varied from 10% ...

More

USE OF GRANULATED BLAST FURNACE SLAG, STEEL SLAG

USE OF GRANULATED BLAST FURNACE SLAG, STEEL SLAG AND FLY ASH IN CEMENT-BENTONITE SLURRY WALL CONSTRUCTION . Talefirouz, Davood . M.Sc., Department of Civil Engineering . Supervisor: Prof. Dr. Erdal Çokça. January 2013, 89 pages . Slurry walls have been widely used for more than 25 years to control the migration of contaminants in the subsurface.

More

Fly Ash, Slag, Silica Fume, and Natural Pozzolans, Chapter 3

Fly ash, slag, and calcined clay or calcined shale are used in general purpose construction, such as (left to right) walls for residential buildings, pavements, high-rise towers, and dams. (67279, 48177, 69554, 69555) Fig. 3-3. Fly ash, a powder resembling cement, has been

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A Closer Look: Fly Ash, Slag Cement Metakaolin ...

Jan 07, 2020  Slag cement is generally ground to less than 45 microns and has a specific gravity in the range of 2.85 to 2.95. Slag is generally used in higher percentages than fly ash, commonly constituting between 30% and 45% of the cementitious material in concrete, while some comprise as high as 70% or more of the cementitious material in a mix.

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3D printing concrete made from fly ash and steel slag ...

Feb 05, 2018  Fly ash consists of fine particles of fuel that are driven out of coal-fired boilers, while steel slag is by-product of the steel industry, left over after a metal is separated from its raw ore. Both materials have been used as additive to cement before, but are now used together with only the addition of some chemicals to make a concrete like ...

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(PDF) Utilization of steel slag for Portland cement ...

Herein, fly ash (FA), steel slag (SS) and ground granulated blast-furnace slag (GGBS) was used to replace cement with the dosage of 40%, and the early hydration process and microstructure ...

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Properties and Uses of Steelmaking Slag – IspatGuru

Nov 14, 2018  When a mixture of fly ash, powder of steelmaking slag and cement clinker is used to prepare composite cement then it can be noticed that a certain amount of steelmaking slag admixture in cement can reduce the porosity, improve pore distribution and increase the consistency of cement.

More

(PDF) Effect of silica fume on steel slag concrete

Slag cement and fly ash are the two most common SCM’s used in concrete, their properties are frequently compared to each other by mix designers seeking to optimize concrete mixtures.

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PREDICTION OF STRENGTH OF FLY ASH AND SLAG

ingredients, including cement, fly ash, blast furnace slag, water, superplasticizer, coarse aggregate, and fine aggregate. In the following sections, section 2 describes the artificial neural network.

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Differences between fly ash, slag and silica fume - Low ...

– Fly Ash – Ground Granulated Blast Furnace Slag – Silica Fume – Calcium Carbonate – Natural Pozzolans: such as calcined clays, shale and metakaolin. Fly Ash: Fly Ash is the most widely used SCM in concrete and is a byproduct of coal combustion in electric power generating plants.

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Geotechnical Properties of Steel Slag-fly Ash-lime Mixture ...

The strength gain in steel slag-fly ash-lime mix is mainly attributed to the pozzolanic reaction. When water is added to a dry mix of steel slag, fly ash and lime, the calcium ions .

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Coal fly ash and steel slag valorisation throughout a ...

Sep 18, 2017  Starting materials. Two different wastes were used in the glass formulation, viz., fly ash and metallurgical slag. Moreover, Na 2 CO 3 was added to the glass composition to assist the melting process.. The fly ash used in this investigation was originated from Petacalco coal-fired power plant, located in La Unión, Guerrero State, Mexico.

More

Steel Slag Research Papers - Academia

Dif erent amount of steel slag, i.e. 4, 8 and 12% with dif erent amount of fly ash, i.e. 3, 6 and 9% were used to stabilize the soft soil. The performance of steel slag with fly ash modified soil was evaluated using compaction compression permeability and index properties test.

More

Contributions of fly ash and ground granulated blast ...

Apr 15, 2016  Hydration heat evolutions and non-evaporable water contents of binders and reaction degrees of fly ash and ground granulated blast-furnace slag (GGBS) were tested to investigate the contributions of fly ash and GGBS to the early hydration heat of composite binders at 25°C and 50°C.

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