BF slag is rich in CaO, SiO2, Al2O3, and MgO which are similar to the components of Portland cement. Francis Flower recycles blast furnace slag from the steel industry for production of ground granulated blast furnace slag for use in cement production, among other offerings for industrial and agricultural use. Further this slag is grounded finely as that of cement and mixed in the proportion as per the requirement. Because of the deliberate hydration procedure, the slump retention and initial setting time are further. Vicat's apparatus is used for. Early Strength is low; therefore, it cannot be used in Reinforced Cement Concrete (RCC) works. Different percentage of GGBFS is added for different type of construction. It is a recovered industrial by-product of an iron blast furnace. Slag cement, often called ground granulated blast-furnace slag (GGBFS), is one of the most consistent cementitious materials used in concrete. Ordinary Portland Cement (OPC): It is the most widely used type of cement and can meet the major requirement for construction. 8 Pick up the incorrect statement from the following: (A) Space between the exterior walls of a … Slag cement (also called ground granulated blast furnace slag) is a hydraulic cement produced during the reduction of iron ore to iron in a blast furnace. The slag that is gained on the iron ore is then detached and cooled down gradually, which results in the creation of nonreactive crystalline substantial. Due to this property, this type of cement can be used where the problem of thermal cracking is foreseen. develops low heat of hydration [B]. Q.4. Granulated Blast Furnace Slag For the blast furnace slag cement, the three types shown in Table 1 are specified in JIS R 5211: Blast Furnace Slag Cements”. The procedure of removal of iron is the blast furnace. The concretes that contain blast furnace slag cement have less permeability, low hydration heat, better operability and processability, higher strength, and higher resistance to hazardous chemicals and hazardous attacks in many forms as compared to the common concrete. (a)The cement does not undergo large change in volume when treated with water (b)The plastic cement paste changes into hard mass (c)The cement paste sets and develops strength (Ans) (d)None of the above. Used for structures meant for water retaining such as retaining wall, rivers, ports, tunnels for improvement in impermeability. 14 Kg. Other slag blends of varying blend ratios can also be produced on request. The constituents of the GGBFS are as shown in the table below, Table 1: Constituents of the Ground Granulated Blast Furnace Slag. Ground Granulated Blast Furnace Slag 65996-69-2 266-002-0 95-100% Gypsum 13397-24-5 603-783-2 <5% 4. Test your knowledge about Civil Engineering – Concrete Technology by taking this Multi Choice Question (MCQ) quiz. The Ground Granulated Blast Furnace Slag (GGBS) is obtained by grinding blast furnace slag in water or steam. 7 Kg. The Following Section consists of Multiple Choice Questions on Concrete Technology. VIP members get additional benefits. As the slag is finely grounded, it has the valence to fill the pores efficiently, workability is high and bleeding is low. Ground granulated blast furnace slag cement (GGBFS) is a fine glassy granules which contain cementatious properties. Fig 3: Use of Slag cement in Canal Lining. 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. Granulated Blast Furnace Slag Status: Approved Dept: Sales & Marketing Revision : 21 November 2016 Page 1 of 6 1. Sign Up to The Constructor to ask questions, answer questions, write articles, and connect with other people. At the present, most industrial slags are being used without taking full advantage of their properties or disposed rather than used. Greater durability and reduced permeability due to fineness. The cement components are ground, dried, and classified in the Pfeiffer vertical roller mill. Question No. Further, this slag is grounded finely as that of cement and diverse in the amount as per the requirement. Get your score and actual answers at the end of this quiz. GROUND GRANULATED BLAST FURNACE SLAG Status: Approved Dept: Sales & Marketing Revision: 1.0 Issued: 22nd October 2020 Supersedes: N/A Page 1 of 2 PRODUCT DESCRIPTION Cockburn Cement markets Ground Granulated Blast Furnace Slag (GGBFS). In addition, recent research has examined its performance throughout the world [7 14]. The advantages of this blast furnace slag cement, such as increasing strength over long periods of time, low heating speed when reacting with water, and high chemical durability, are put to effective use in a broad range of fields including in the construction of ports and harbors and other large civil engineering works. All Rights Reserved. Ground granulated blast-furnace slag, more commonly referred to as slag or slag cement, is a by-product of steel production. 1. C. blended cement (Type GB), must conform to AS 3972. Ground Granulated Blast Furnace Slag (GGBFS) is a fine glassy granule which encompasses cementitious possessions. FIRST AID MEASURES 4.1 Description of first aid measures Eyes If in eyes, hold eyelids apart and flush continuously with running water. GBFS/GBS Granulated Blast Furnace Slag/Granulated Blastfurnace Slag berbentuk butiran/pasir merupakan residu pembakaran pada tanur (furnace) dari proses pemurnian baja atau produk samping dari pabrik baja seperti PT Krakatau Steel (Persero) Tbk. Fig 1: Extraction of molten Slag from Blast Furnace. Hiraskar and Chetan Patil Abstract-The Iron industries produce a huge quantity of blast furnace slag as by–product, which is a non–biodegradable waste material from that only a small percentage of it is used by cement industries to manufacture cement. Get your score and actual answers at the end of this quiz. Making cement is energy intensive, generating up to 176 kg CO 2 for each tonne of concrete manufactured. The high strength of rapid hardening cement at early stage, is due to its. Box 1886, PC 133, 2nd Floor,Tower 5, Panorama Mall. 51.The phenomenon by virtue of which the cement does not undergo large change in volume when treated with water, is known as (a)Fineness The company says that it will use Suez Cement’s CEM III/A ground granulated blast furnace slag (GGBFS) cement to produce concrete for the 96km monorail network. Slag from blast furnace contains (a) alumina (b) lime (c) silica (d) all these. Blast Furnace Slag Cement – Manufacture, Properties and Uses. dan anak perusahaannya PT Krakatau Posco. Revenue and volume estimates of each product segment during the forecast period are documented. Molten slag is tapped from a blast furnace, rapidly quenched with water ("granulated"), dried and ground to a fine powder. Blast furnace slag cement: A. develops low heat of hydration: B. has less early strength: C. ... Low heat cement should not be used for thin concrete structures. Become VIP Member. compositions of cement and blast furnace slag sand are presented in Tables2and3. Q.4. GGBFS is divided into three classifications based on its activity index. develops high heat of hydration The initial strength achieved is lesser than that of conventional concrete, but the higher ultimate strength gained is equal and sometimes higher that conventional concrete. Portland blast furnace slag cement can be used (a) in under water structures (b) in structures in alkaline soils (c) in all places where ordinary Portland cement is used (d) all these. Initial Strength is low, due to this it cannot be used in RCC works. Additional highlights from the Granulated Blast-Furnace Slag Industry market report: Based on product gamut, the Granulated Blast-Furnace Slag Industry market is bifurcated into Alkalinity Blast-Furnace Slag andAcidic Blast-Furnace Slag. HSC cement is also widely used in road stabilisation. In the places vulnerable to attacks of chloride and sulfate such as sub-structure and marine structures. It also needs longer period to gain required strength. Applications the first method blast furnace slag is interground with cement clinker along with gypsum.In the second method blast furnace slag is separately ground and then mixed with the cement. Portland blast furnace slag cement can be used (a) in under water structures (b) in structures in alkaline soils (c) in all places where ordinary Portland cement is used (d) all these. Blast furnace slag cement is used for (a)Dams (b)Bridge abutments (c)Retaining walls (d)All of these (Ans) ... MP GK 40 MCQs in Hindi and English; M.P GK QUIZ with 40 MCQs SET-3; To determine the liquid limit of soil as per IS: 2720 (Part 5) – 1985. The slag that is obtained on the iron ore is separated and cooled down slowly, which results in the formation of nonreactive crystalline material. Blast Furnace Slag Cement (Application, Pros & Cons). Question No. Ground granulated blast-furnace slag, more commonly referred to as slag or slag cement, is a by-product of steel production. Because Ground-granulated blast-furnace slag (GGBS or GGBFS) is a lower carbon building material, it's considerably more environmentally friendly. Blast Furnace Slag About Arij 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. Concrete properties can be improved using Fine Blast Furnace Slag (BFS). It is a recovered industrial by-product of an iron blast furnace. Slag is primarily composed of CaO, SiO 2, aluminum oxide (Al 2 O 3), and magnesium oxide (MgO). Sorry, you do not have permission to ask a question, You must login to ask question. Grade 80 has a low activity index and is used primarily in mass structures because it generates less heat than portland cement. Blast furnace slag cement is a mixture of ground granulated blast furnace slag and Portland cement. Blast Furnace Slag (BFS) cement is the combination of Ordinary Portland Cement (OPC) and fine Granulated Blast Furnace Slag (GBFS) gained as a byproduct in the steel making manufacturer with below 70% to that of cement. Blast furnace slag cement has come to be widely employed, mainly in civil engineering structures, because of its high long-term strength and excellent resistance to the alkali-silica reaction and salt damage. This process leads to a glassy, granular product that is then dried and ground into a fine powder. Application of Blast Furnace Slag Sand in Cement Concrete–A Case Study 457 4. the hydration process if slag is an exothermic process, thus the generation of heat of hydration is slow. Ground Granulated Blast Furnace Slag (GGBFS) is a fine glassy granule which encompasses cementitious possessions. has less early strength [C]. It employs 130 people across four sites in the UK: Scunthorpe, Wicken, Gurney Slade and Runcorn. Ground granulated blast furnace slag (GGBFS) is designated in ASTM C 989 and consists mainly of silicates and aluminosilicates of calcium. Blast furnace slag cement [A]. Please enter your email address. This product is marketed to the cement industry by ASMS as a cementitious material. The BOS (Basic … PRODUCTION OF BOS SLAG. Table 3: Properties of Blast-Furnace Slag Cement. finer grinding . GGBS being a waste material, it needs proper method for disposal. Slag is primarily composed of CaO, SiO 2, aluminum oxide (Al 2 O 3), and magnesium oxide (MgO). The general-purpose cement that is available on the market is Type B (hereinafter “BB”) containing 40%–45% ground granulated blast furnace slag. The beneficial effect of blast furnace slag on the alkali silicate reaction was reported in [44], and the effect has two parts: First, blast furnace slag cement has a denser pore structure than Portland cement, and this hampers different transport processes needed for alkali silica reaction. 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. The reduction of in greenhouse gas emission can be as high as 45%, depending on the mix and application. Ground granulated slag, combined with portland cement in the mixer, is the subject of discussion at this Forum. Additionally, the particle distribution curve of blast furnace slag sand and recycled coarse aggregate are presented in Figure3. As the colour of GGBFS is white, the cement colour obtained is lighter coloured when compared to conventional cement. Water required per bag of cement, is. GGBS offers a more sustainable concrete having higher compressive strength, reduced permeability and resistance to chloride and sulphate attacks. But this leads to lower heat of hydration and thus lower temperature rise in the concrete. Ground granulated blast-furnace slag (GGBFS) Our slag cement CEMSlag TM is a hydraulic cement material created when granulated blast-furnace slag from the steel manufacturing process is ground to a fineness suited for concrete production. Login to The Constructor to ask questions, answer people’s questions, write articles & connect with other people. Hsc cement is a fine glassy granule which encompasses cementitious possessions slag has codes... Remove the ads least 15 minutes is white, the slump retention and initial setting time further. Blast furnaces, during the forecast period are documented it 's considerably more environmentally.. 176 kg CO 2 for each tonne of Concrete manufactured Extraction of from. 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