High resistance to chloride attack which reduces the risk of corrosion in concrete. 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. Ground-granulated blast-furnace slag is obtained by quenching molten iron slag from a blast furnace in water or steam, to produce a glassy, granular product that is then dried and ground into a fine powder. Other means of identification: Cement, Slag, ALLCEM, Type S Cement, Granulated Blast-Furnace Slag Cement… Typical chemical composition contains calcium oxide 40%, silica 35%, alumina 13% and magnesia 8%. The production of GGBS requires less than a fifth the energy and produces less than a fifteenth of the carbon dioxide emissions. The use of GGBFS in Portland cement is governed by AASHTO M302. The glass structure of the quenched glass largely depends on the proportions of silica and aluminum along with calcium and magnesium. GGBS of Lafarge Emirates Cement conforms both to BS 6699:1992 & ASTM C 989-99 standards. The composition of slag essentially depends on the raw materials used in the iron production process. Muscat, Sultanate of OmanWhatsApp: +968 9825 4442Email: [email protected]Web: arijco.com, Penetration Grade Bitumen | Viscosity Grade (VG) Bitumen | Performance Grade (PG) Bitumen | Polymer Modified Bitumen (PMB) | Bitumen Emulsion | Oxidized Bitumen | Cutback Bitumen. The molten slag, which absorbs much of the sulfur from the charge, comprises about 20 percent by mass of iron production. It is produced by grinding premium quality Granulated Blast-furnace Slag, a by-product of steel manufacturing process, to a fineness of around 400 m2/kg. The slurry composition cement is of a kind prepared by using blast-furnace slag cement of a specified type as the cement at a water/blast-furnace slag cement mass ratio of 40-250% and contains the admixture in an amount of 0.1-5 mass parts for 100 mass parts of the blast-furnace slag cement. SLAG Ground granulated blast-furnace slag (Fig. 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 … Making cement is energy intensive, generating up to 176 kg CO 2 for each tonne of concrete manufactured. GGBS concrete gains strength more steadily than equivalent concrete made with Portland cement. Ground Granulated Blast Furnace Slag (GGBS) and Ordinary Portland Cement (OPC) [Quora] Chemical Composition of Ground Granulated Blast Furnace Slag The composition of slag essentially depends on the raw materials used in the iron production process. The importance of Ground Granulated Blast Furnace Slag (GGBS) lies in its greener way to become a substitute in concrete material. Blast Furnace Slag is shaped when iron pellets or iron ore, coke, and limestone or dolomite (Flux) are heated together in a blast furnace. Blast Furnace Slag. At higher GGBS percentages the increased cementitious content may lead achieve equivalent 28 day strength much faster. Slag cement, often called ground granulated blast-furnace slag (GGBFS), is one of the most consistent cementitious materials used in concrete. It consists primarily of silicates, aluminosilicates, and calcium-alumina-silicates. This improves its durability in the presence of salts such as chloride and sulfate. Normal composition of portland cement is 30 % clinker, 5 % gypsum and 70 % blast furnace granulated slag. It has similar or slightly improved consistency than Portland cement concrete. It is a by-product of the iron-making industry. Box 1886, PC 133, 2nd Floor,Tower 5, Panorama Mall. The quality of slag used in cement manufacturing is governed by IS 12089:1987. With a decade of international business experience and maintaining universal trade relation with three continents, our group gathered under the name of Arij Global Trading to supply our esteemed customers Grade-A quality of different mineral products. What is the Composition of BFS (Blast Furnace Slag). This property is helpful in construction in warm weather. The Physical properties are specific gravity 2.9, Bulk density 1200 Kg/m3 and fineness 350 m2/Kg. 3-5), also called slag cement, is made from iron blast-furnace slag; it is a nonmetallic hydraulic cement consisting essentially of sili-cates and aluminosilicates of calcium developed in a molten condition simultaneously with iron in a blast furnace. GGBS is used along with the ordinary Portland cement or other pozzolanic materials in concrete. Sharjah Cement Factory purchases Slag mainly from NIPPON STEEL CORPORATION, Japan. It is a recovered industrial by-product of an iron blast furnace. Burning substantial and ore are supplied from the top while airflow is abounding from the bottom of the chamber. Also the various studies show that including Ground Granulated Blast Furnace Slag in concrete does not decrease the strength of concrete. 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. If 50% of GGBS is used in a concrete mix, it can develop almost same 28 day strength as ordinary Portland cement. satyendra; April 10, 2013; 1 Comment ; Air cooled slag, BF slag, BF Slag cement, Expanded slag, Glass content, Granultated slag, Leachate, Pelletized BF slag,; Blast Furnace Slag. But percentages of 20 to 80 are commonly used. blast-furnace slag cement. Throughout the period of chilling and becoming hard from its melted state, Blast Furnace Slag (BFS) can be cooled in numerous ways to procedure any of the different types of BFS products. The material can be used in granular base, hot mix asphalt, Portland cement concrete, embankments, and fill applications. Ground-granulated blast furnace slag is highly cementitious and high in CSH which is a strength enhancing compound which improves the strength, durability and appearance of the concrete. A mixture of portland cement and granulated slag, containing up to 65 percent slag, is known in the English-speaking countries as portland blast-furnace (slag) cement. When the iron is processed using a blast furnace, slag and iron both collect at the bottom of the furnace. 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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. Once the slag has been cooled and ground to a usable fineness it is stored and shipped to suppliers throughout the united states. In case you are interested, please take a look at our specifications here. Synonyms: Slag cement, ground granulated blast furnace slag (GGBFS), granulated blast furnace slag (GBFS), Slag Product Form: Solid / powder or granular Intended Use of Product: Ground granulated blast furnace slag is used as an additive with portland cement in combination with water and aggregates to form concrete. In order to optimise the hydration reaction, pozzolanic materials, such as blast furnace slag and cement-kiln dust are added. Ground granulated blast furnace slag (GGBFS) has been used for many years as a supplementary cementitious material in Portland cement concrete, either as a mineral admixture or as a component of blended cement. When the metallurgical melting procedure is finished, the lime in the flux has been chemically united with the aluminates and silicates of the ore and coke ash to procedure an outcome named blast furnace slag which is non-metallic. Physical Properties of Ground Granulated Blast Furnace Slag (GGBFS) Ground granulated blast furnace slag have a color nearly white in appearance. GGBFS is formed when Granulated Blast Furnace Slag (GBFS) is an additional processed or ground using cement clinker grinding skill. Ground granulated blast furnace slag (GGBFS) is designated in ASTM C 989 and consists mainly of silicates and aluminosilicates of calcium. While this is a new method of use in this country, the cementitious material is not new: it is an improved Portland blast-furnace slag cement. GGBS Concrete GGBS Proportions On its own, ground granulated blast furnace slag (GGBS) hardens very slowly and, for use in concrete, it needs to be activated by combining it with Portland cement. Molten slag diverted from the iron blast furnace is rapidly chilled, producing glassy granules that yield desired reactive cementitious characteristics when ground into cement fineness. Pulverized-fuel ash (pfa) has similar soluble silica and calcium oxide contents to flint sand when fresh, and has a variable composition in concrete depending on the extent of the pozzolanic reaction. GGBS hardens very slowly so it is generally used along with ordinary Portland cement in concrete. P.O. The latent hydraulic property of the blast-furnace slag gives excellent long-term strength. Ground-granulated blast-furnace slag (GGBFS) is produced by quenching molten iron slag (a by-product of iron and steel-making) from a blast furnace in water, to produce a granular product that is then dried and ground into a fine powder. Pozzolanic materials need an additional calcium source in order to start the hydration reaction. So incorporating this waste material in concrete can reduce the depletion of conventional concrete components such as cement, fine aggregate and coarse aggregate. From the above two differences in composition compared with the Portland cement, would show changes in the hydration reaction as well as the hydration products that are given GGBFS. Cement made with blast furnace slag has lower permeability than Portland cement and reduces the diffusion rate of ions through the hardened cement. The amount of GGBS in it may vary from 30 to 70%. GHS product identifier: Slag Cement Chemical name: Calcium compounds, calcium silicate compounds, and other calcium compounds containing iron and aluminum make up the majority of this product. Further benefits of GGBS includes that the manufacturing does not requires use of any virgin materials. The iron ore is reduced to iron in that temperature and all other materials form a slag and floats on the top of iron. The slag shall contain no additions and shall conform to the sulfide sulfur and sulfate chemical composition requirement. Slag cement specifications are described and slag produced from European and North American blast furnaces are compared to the slag cement standards. Subsequently, molten slag has been quenched quickly by passing it through high compression, high capacity water sprays, the heat energy controlled in the molten slag causes it to explode and promptly procedure Granulated Blast Furnace Slag (GBFS). Control of drying of the slag to produce Granulated Blastfurnace Slag with consistent moisture content. 2. The cement composition according to claim 1, wherein the glass content of the slowly cooled blast furnace slag powder is at most 10%. Due to this property it imparts lower early age strength in concrete. SiO 2 content of at least 60% and (b) a slowly cooled blast furnace slag powder having a glass content of at most 30%. The glass content of slag’s suitable for blending with Portland cement typically varies between 90-100% and depends on the cooling methods and the temperature at which cooling is initiated. Greater the percentage of GGBS, greater will be the effect of GGBS in concrete. This process optimizes the cementitious properties and produces granules like coarse sand. These furnaces operate at a temperature above 1500 degree Celsius and are fed with iron ore, coke and limestone. This specification covers three strength grades of finely ground granulated blast-furnace slag (Grades 80, 100, and 120) for use as a cementitious material in concrete and mortars. BLAST FURNACE SLAG User Guideline. This may affect construction schedules which needs quick setting of concrete. A typical combination is 50% GGBS and 50% ordinary Portland cement. But this leads to lower heat of hydration and thus lower temperature rise in the concrete. Compared to the blended cements used in the past, the "new" Portland Cement Concrete. Analysis of the slag at the factory for chemical composition using X-Ray Fluorescence, and glass content using X-Ray Diffraction. Typical chemical composition contains calcium oxide 40%, silica 35%, alumina 13% and magnesia 8%. It is actually a byproduct of iron production. The heat release of two concrete mixes with a different ratio of cement (C) and slag (S): 150/300 is C=150, S=300; 300/150 is C=300, S=150 kg/m 3. The concrete made with Ground Granulated Blast Furnace Slag cement sets more slowly compared to ordinary Portland cement concrete based on the amount of GGBS in the cementations material. Manufacturing of Ground Granulated Blast Furnace Slag utilizes all of the slag material and produces no significant waste. Due to the less heat of hydration the temperature rise will be less avoiding the risk of. Using of GGBS in concrete generally increase the setting time slightly up to 30 minutes. Therefore and for the formation of ettringite, an external calcium source is … A Portland cement mixed with a designated amount of ground granulated blast-furnace slag. GGBS are used to produce two types of cement such as Portland Blast Furnace Cement (PBFC) and High Slag Blast Furnace Cement (HSBFC) with varying amount of GGBS. Other properties of Ground Granulated Blast Furnace Slag concrete are as follows: The setting time of concrete is mainly influenced by the temperature and water cement ratio. Cement - Cement - Slag cements: The granulated slag made by the rapid chilling of suitable molten slags from blast furnaces forms the basis of another group of constructional cements. PSC has been voted as the most suitable cement for mass construction because of its low heat of hydration. This imposition the chemical response to take place all over the ore, not only at the superficial. 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. A typical combination is 50% GGBS with 50% Portland cement, but percentages of GGBS [4] anywhere between 20 and 80 % are commonly used. Concrete material % of GGBS, greater will be less avoiding the risk of lower age. The temperature rise in the process oxide 40 %, silica 35 %, alumina 13 % and 8... 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