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composition of slag cement

composition of slag cement

KR20100002710A - Slag cement composition - Google Patents

PURPOSE: A slag cement composition is provided to improve material properties such as pressure strength, initial intensity, and durability. CONSTITUTION: A slag cement composition contains a blast furnace slag and Portland slag. The slag cement composition contains one or two kinds selected from aluminum sulfate, calcium hydroxide(Ca(OH)2), waste concrete fine powder and sulphate of soda as

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What is slag cement

Slag cement is a hydraulic cement formed when granulated blast furnace slag (GGBFS) is ground to suitable fineness and is used to replace a portion of portland cement. It is a recovered industrial by-product of an iron blast furnace. Molten slag diverted from the iron blast furnace is rapidly chilled, producing glassy granules that yield ...

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Influence of slag composition on cracking potential of ...

Mar 10, 2018  Wei and Hansen [19] examined the effect of cement replacement level by slag (30% and 50%) on cracking. The chemical composition of the slag used in this study (8% Al 2 O 3, 11% MgO, and C/S ratio of 1) was similar to that of the slag used by Byard et al. [15]. The Blaine fineness of slag was reported to be 602 m 2 /kg, which may have ...

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Slag cement terminology

The two most common types of blended cement using slag cement are: Type IS - Portland blast-furnace slag cement (in which slag constituent is between 25 percent to 70 percent by mass) Type I (SM) - Slag-modified portland cement (in which slag constituent is less than 25 percent) Standard Performance Specification for Hydraulic Cement - ASTM C ...

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Slag - LafargeHolcim in the US - Cement, concrete, aggregates

Nonmetallic Slag, Slag Cement, Hydraulic Slag Cement, Slag Note: This SDS covers many types of slag. Individual composition of hazardous constituents will vary between slag types. 1.2. Intended Use of the Product Slag is used as a supplementary cementitious material for cement, concrete and concrete products. It is also used in soil stabilization

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Chemical composition Cement Science

The exact composition of slag varies over a range. In general, factors that determine the suitability of slag for usage in composite cement mainly include the fineness of grinding, glass content and the chemical composition. Fineness; Like most of other cement materials, the reactivity of slag is influenced by its surface area.

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Blast Furnace Slag Cement - Manufacture, Properties and ...

Blast furnace slag cement is the mixture of ordinary Portland cement and fine granulated blast furnace slag obtained as a by product in the manufacture of steel with percent under 70% to that of cement. Ground granulated blast furnace slag cement (GGBFS) is a fine glassy granules which contain cementatious properties.

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Chemical characteristics of iron and steel slag : NIPPON ...

Chemical composition of iron and steel slag. The primary components of iron and steel slag are limestone (CaO) and silica (SiO 2 ). Other components of blast furnace slag include alumina (Alsub>2O 3) and magnesium oxide (MgO), as well as a small amount of sulfur (S), while steelmaking slag contains iron oxide (FeO) and magnesium oxide (MgO).

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Cement Composition Types and Manufacture

Compound Composition of Clinker / Cement Four major compounds formed from the oxides under high temperature in the kiln Name (Oxide Notation) - Shorthand Tricalcium silicate (3 CaO.SiO 2) – C3S Dicalcium silicate (2 CaO.SiO 2) – C2S Tricalcium aluminate (3 CaO.Al 2O 3) – C3A Tetracalcium aluminoferrite (4 CaO.Al 2O 3. Fe 2O 3) – C4AF

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Composite Cement - an overview ScienceDirect Topics

Composite Cement. Composite cements are cements in which a proportion of the Portland cement clinker is replaced by industrial by-products, such as granulated blastfurnace slag (gbs) and power station fly ash (also known as pulverized-fuel ash or pfa), certain types of volcanic material (natural pozzolanas) or limestone.

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What is slag cement

Slag cement is a hydraulic cement formed when granulated blast furnace slag (GGBFS) is ground to suitable fineness and is used to replace a portion of portland cement. It is a recovered industrial by-product of an iron blast furnace. Molten slag diverted from the

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Slag cement with fly ash - Slag Cement Association

Slag cement replaces as much as 50 percent in normal concrete (and up to 80 percent in special applications such as mass concrete). Fly ash is usually limited to 20 or 30 percent. Slag cement is the co-product of a controlled process, iron production, which results in a very uniform composition from source to source.

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What is the Composition of BFS (Blast Furnace Slag)?

Granulated slag is quickly cooled by large amounts of water to produce a granule which is sand-like and is mainly ground into a cement generally known as Ground Granulated Blast Furnaces Slag (GGBFS), or Type S slag cement. It also can be mixed with Ordinary Portland Cement Clinker to make a combined Type 1 cement.

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Ground Granulated Blast Furnace Slag

GROUND GRANULATED BLAST FURNACE SLAG. Composition. Ground granulated blast furnace slag (GGBFS) is designated in ASTM C 989 and consists mainly of silicates and aluminosilicates of calcium. GGBFS is divided into three classifications based on its activity index.

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Cement Composition Types and Manufacture

Compound Composition of Clinker / Cement Four major compounds formed from the oxides under high temperature in the kiln Name (Oxide Notation) - Shorthand Tricalcium silicate (3 CaO.SiO 2) – C3S Dicalcium silicate (2 CaO.SiO 2) – C2S Tricalcium aluminate (3 CaO.Al 2O 3) – C3A Tetracalcium aluminoferrite (4 CaO.Al 2O 3. Fe 2O 3) – C4AF

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MSDS: Slag Material Safety Data Sheet

contains slag or cement. Slag and cement can buildup or adhere to the walls of a confined space. The slag or cement can release, collapse or fall unexpectedly. Properly ground all pneumatic conveyance systems. The potential exists for static build-up and static discharge when moving powders through a

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UltraTech Cement India's no. 1 Cement Brand

Portland Blast-Furnace Slag Cement UltraTech Premium. UltraTech Premium is a concrete special cement, produced in UltraTech's state-of-the-art manufacturing facilities with carefully selected premium ingredients to deliver to the customer cement that produces both exceptionally strong as well as exceptionally durable concrete.

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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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Cement - The major cements: composition and properties ...

The major cements: composition and properties Portland cement Chemical composition. Portland cement is made up of four main compounds: tricalcium silicate (3CaO SiO 2), dicalcium silicate (2CaO SiO 2), tricalcium aluminate (3CaO Al 2 O 3), and a tetra-calcium aluminoferrite (4CaO Al 2 O 3 Fe 2 O 3).In an abbreviated notation differing from the normal atomic symbols, these compounds ...

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Slag - Wikipedia

Slag is the glass-like by-product left over after a desired metal has been separated (i.e., smelted) from its raw ore.Slag is usually a mixture of metal oxides and silicon dioxide.However, slags can contain metal sulfides and elemental metals. While slags are generally used to remove waste in metal smelting, they can also serve other purposes, such as assisting in the temperature control of ...

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cement Definition, Composition, Manufacture, History ...

This article surveys the historical development of cement, its manufacture from raw materials, its composition and properties, and the testing of those properties. The focus is on portland cement, but attention also is given to other types, such as slag-containing cement and high-alumina cement.

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IS 12089 (1987): Specification for granulated slag for the ...

0.2 Granulated slag is used for the manufacture of hydraulic cement by mixing Portland cement clinker, gypsum and granulated slag in suitable proportions and grinding the mixture to get a thorough and intimate mix between the constituents. Portland slag cement may also be manufactured

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Factors affecting the reactivity of slag Cement Science

The exact composition of slag varies over a range. In general, factors that determine the suitability of slag for usage in composite cement mainly include the fineness of grinding, glass content and the chemical composition. Fineness; Like most of other cement materials, the reactivity of slag is influenced by its surface area.

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Microstructure and Composition of Hardened Paste of Soda ...

In order to utilize industrial waste soda residue, a kind of binding material system based on soda residue-slag-cement has been developed. The microstructure and composition of hardened paste of the binding material system after curing for 28 days was analyzed by means of scanning electron microscope (SEM), energy dispersive X-ray spectroscopy (EDS), X-ray diffraction (XRD) and ...

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Slag cement with fly ash - Slag Cement Association

Slag cement replaces as much as 50 percent in normal concrete (and up to 80 percent in special applications such as mass concrete). Fly ash is usually limited to 20 or 30 percent. Slag cement is the co-product of a controlled process, iron production, which results in a very uniform composition from source to source.

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Ground Granulated Blast Furnace Slag

GROUND GRANULATED BLAST FURNACE SLAG. Composition. Ground granulated blast furnace slag (GGBFS) is designated in ASTM C 989 and consists mainly of silicates and aluminosilicates of calcium. GGBFS is divided into three classifications based on its activity index.

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Ground Granulated Blast-Furnace Slag: Its Chemistry and ...

Table 2 compares the composition of a typical ground granulated blast-furnace slag to that of a typical Type I Portland cement, a typical Class C fly ash and a typical Class F fly ash. You will note that the GGBFS and the two fly ashes have the same kinds of oxides as the

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US6776839B2 - Slag cement - Google Patents

A slag cement having an improved early strength and containing aluminosilicates, blast furnace slag, clinker and CaSO 4 , has a content of 70 to 95% by weight of blast furnace slag used in the ground form at >4,500 Blaine (cm 2 /g) with no more than half of this portion being substitutable by aluminosilicates such as fly ash, alumina, marl or the like, 0.1 to 2% by weight of clinker, sulfate ...

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MSDS: Slag Material Safety Data Sheet

contains slag or cement. Slag and cement can buildup or adhere to the walls of a confined space. The slag or cement can release, collapse or fall unexpectedly. Properly ground all pneumatic conveyance systems. The potential exists for static build-up and static discharge when moving powders through a

get price

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.

get price

Factors affecting the reactivity of slag Cement Science

The exact composition of slag varies over a range. In general, factors that determine the suitability of slag for usage in composite cement mainly include the fineness of grinding, glass content and the chemical composition. Fineness; Like most of other cement materials, the reactivity of slag is influenced by its surface area.

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Chemical Composition of Cement

To manufacture a cement of stipulated compound composition, it becomes absolutely necessary to closely control the oxide composition of the raw materials. SO3 also appear in cement analysis which comes from adding gypsum (4-6) % during clinker gridding. The Iraqi and British specification for normal high rapid Portland cement pointed that

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IS 12089 (1987): Specification for granulated slag for the ...

0.2 Granulated slag is used for the manufacture of hydraulic cement by mixing Portland cement clinker, gypsum and granulated slag in suitable proportions and grinding the mixture to get a thorough and intimate mix between the constituents. Portland slag cement may also be manufactured

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How to Make Cement From Blast-Furnace Slag

Apr 23, 2017  It has long been established by law and custom in most countries that a cement made from blast-furnace slag and limestone so as to comply with standard requirements of method of manufacture, chemical composition, fineness, strength, soundness, specific gravity, c., is legitimately a Portland cement, and may be sold as such.

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Microstructure and Composition of Hardened Paste of Soda ...

In order to utilize industrial waste soda residue, a kind of binding material system based on soda residue-slag-cement has been developed. The microstructure and composition of hardened paste of the binding material system after curing for 28 days was analyzed by means of scanning electron microscope (SEM), energy dispersive X-ray spectroscopy (EDS), X-ray diffraction (XRD) and ...

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Treatment and characterisation of electric ... - Global Slag

Oct 01, 2007  Table 1 - Chemical composition of EAF slag.. The basicity index of the slag calculated based on CaO/SiO 2 and CaO/(SiO 2 +P 2 O 5) works out to be 1.85 and 1.78 respectively.The relationship between basicity, phase composition and hydraulic activity of steel slag as reported in the literature is given in Table 2.

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The Effect of Chemical Composition of Blast-Furnace Slag ...

Oct 20, 2017  Table 2-1: Typical Slag Composition 6 Table 3-1: Bogue Calculated Potential Compound for As-Received Cement 18 Table 4-1: Elemental Oxide Composition of As-Received Cement 22 Table 4-2: Oxide Chemical Analysis for As-Received Slags 23 Table 4-3: Cement Phase Content Using XRD 24 Table 4-4: Slag Phase Content Using XRD 25 ...

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Three-dimensional computer modeling of slag cement ...

Jul 29, 2007  This indicates that the model among others accounts correctly for w/c, fineness, slag composition, pore water composition, slag reactivity etc. Another remarkable characteristic of the phase composition of hydrating slag cement paste is the low content of CH. The volume fraction of CH in the paste is almost constant after 4 weeks of hydration.

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