Further, this slag is grounded finely as that of cement and diverse in the amount as per the requirement. Portland Slag Cement (P.S.C) Portland slag cement is obtained by mixing Portland cement clinker, gypsum and granulated blast furnace slag in suitable proportions and grinding the mixture to get a thorough and intimate mixture between the constituents.. 1. The efficiency, which the molten blast furnace slag is rapidly chilled, as well as the chemical composition of the slag source, largely determines its cementitious properties for use in concrete. 21 Kg. PRODUCTION OF BOS SLAG. develops high heat of hydration Become VIP Member, Do you need to remove the ads? When the iron is processed using a blast furnace, slag and iron both collect at the bottom of the furnace.The molten slag must first be separated from the molten iron. Choose the correct answer from the following MCQ. blast-furnace slag cement. Slag. the hydration process if slag is an exothermic process, thus the generation of heat of hydration is slow. After the granulated blast furnace slag is formed, it must be dewatered, dried and ground, using processes similar to those used with Portland cement clinker to make Portland cement. As the initial setting time is high, this cement is not used for emergency or repair works. As the colour of GGBFS is white, the cement colour obtained is lighter coloured when compared to conventional cement. You will receive a link and will create a new password via email. 2. 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. Due to this property, this type of cement can be used where the problem of thermal cracking is foreseen. Ground Granulated Blast Furnace Slag (GGBFS) is a fine glassy granule which encompasses cementitious possessions. Fig 1: Extraction of molten Slag from Blast Furnace. Slag cement, often called ground granulated blast-furnace slag (GGBFS), is one of the most consistent cementitious materials used in concrete. This process introduces the molten slag to water and creates an amorphous granular product which is typically minus 3mm. GGBS being a waste material, it needs proper method for disposal. Granulated Blast Furnace Slag Status: Approved Dept: Sales & Marketing Revision : 21 November 2016 Page 1 of 6 1. 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Use and Properties of Blast Furnace Slag as a Building Material- A Review This paper aims at bringing a literature review on the uses and properties of popular industrial and mineral byproduct 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. It employs 130 people across four sites in the UK: Scunthorpe, Wicken, Gurney Slade and Runcorn. Used for structures meant for water retaining such as retaining wall, rivers, ports, tunnels for improvement in impermeability. 1. Fig 2: Use of Slag cement in Sulphate and Chloride attack places. 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. Granulated blast furnace slag Just like air-cooled blast furnace slag, this slag has a hydraulic property and there is no risk of alkali-aggregate reaction. Making cement is energy intensive, generating up to 176 kg CO 2 for each tonne of concrete manufactured. It is a recovered industrial by-product of an iron blast furnace. For more information call 1300 CEMENT (1300 236 368) or visit www.cementaustralia.com.au SAFETY DATA SHEET Ground Granulated Blast Furnace Slag Section 1: Identification of the Material and Supplier Company Details Cement Australia Pty Limited ABN 75 104 053 474 18 Station Avenue Darra, Queensland 4076 Tel: 1300 CEMENT (1300 236 368) Fax: 1800 CEMENT (1800 236 368) Website: … Continue flushing until advised to stop by a Poisons Information Centre, a doctor, or for at least 15 minutes. higher content of tricalcium. Blast Furnace Slag can be processed into another form by Granulation. 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. © 2009-2020 The Constructor. 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. In this article we discuss about the manufacture, constituents, properties, uses, advantages and disadvantages of Blast-furnace slag cement. The BOS (Basic … The constituents of the GGBFS are as shown in the table below, Table 1: Constituents of the Ground Granulated Blast Furnace Slag. The production cost of this cement is less than the Ordinary Portland Cement (OPC). Slag is primarily composed of CaO, SiO 2, aluminum oxide (Al 2 O 3), and magnesium oxide (MgO). 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. blended cement (Type GB), must conform to AS 3972. It also needs longer period to gain required strength. Ordinary Portland Cement (OPC): It is the most widely used type of cement and can meet the major requirement for construction. And its percentage ranges between 10% to 30%. 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. Slag. 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. Because of the powerful latent hydraulic property that results from fine grinding, this slag is used in products such as Portland blast furnace slag cement. (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. 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”. Environmentally friendly and reduced greenhouse gas emissions. Ground granulated blast furnace slag is an eco-friendly material with regard to its production process and usage. The slag that is obtained on the iron ore is separated and cooled down slowly, which results in the formation of nonreactive crystalline material. Slag from blast furnace contains (a) alumina (b) lime (c) silica (d) all these. Ground granulated blast-furnace slag, more commonly referred to as slag or slag cement, is a by-product of steel production. has less early strength [C]. 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 Product quality and product fineness can be adjusted within a wide range (up to 6000 cm2/g Blaine). GGBS offers a more sustainable concrete having higher compressive strength, reduced permeability and resistance to chloride and sulphate attacks. Vicat's apparatus is used for. It is also a kind of cement that helps save resources and en- ergy. It has good resistance towards sulphate and chloride attack and even less risk of alkali-silica reaction with aggregates. Blast Furnace Slag Cement; Air Entraining Cement; Hydrographic cement; 1. [3] Bougara A, Kadri EH, Ezziane K, Efficiency of granulated blast furnace slag replacement of cement according to the equivalent binder concept. Ground Granulated Blast Furnace Slag (GGBFS) is a fine glassy granule which encompasses cementitious possessions. Concrete properties can be improved using Fine Blast Furnace Slag (BFS). pozzolanic materials. Test your knowledge about Civil Engineering – Concrete Technology by taking this Multi Choice Question (MCQ) quiz. 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. GBS and HSC Portland cement blends are made by blending Portland Cement and Ground Granulated Blast Furnace Slag (25% Slag blend -GBS and 60% Slag blend - HSC). The high strength of rapid hardening cement at early stage, is due to its. Moist feed materials can be fed to the mill separately from warm and dry feed materials. develops low heat of hydration [B]. Materials 2019, 12, x FOR PEER REVIEW 2 of 12 against chloride ion diffusion is improved [6]. Tata Steel IBMD is one of the leading suppliers of GGBS and the product has been used in construction of many iconic structures in India. FIRST AID MEASURES 4.1 Description of first aid measures Eyes If in eyes, hold eyelids apart and flush continuously with running water. Get your score and actual answers at the end of this quiz. 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. burning at high temperature. Test your knowledge about Civil Engineering – Concrete Technology by taking this Multi Choice Question (MCQ) quiz. Fig 3: Use of Slag cement in Canal Lining. The high strength of rapid hardening cement at early stage, is due to its. Slag is primarily composed of CaO, SiO 2, aluminum oxide (Al 2 O 3), and magnesium oxide (MgO). At the present, most industrial slags are being used without taking full advantage of their properties or disposed rather than used. Sign Up to The Constructor to ask questions, answer questions, write articles, and connect with other people. Table 2: Proportion of slag percentage for different applications. Manufacture and Constituents of Blast-Furnace Slag Cement, Disadvantages of Blast-Furnace Slag Cement, Reciprocating Pump – Components, Working and Uses, Shear Strength of Soil by Direct Shear Test, 8 Advanced Non-Destructive Testing Methods You Should Know About, Building with Textile-Reinforced Concrete: Important Properties and Advantages. Are ground, dried, and classified in the places susceptible to chloride and sulfate as! 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Sand in cement Concrete–A Case Study 457 4 glassy granules which contain cementatious.... Generates less heat than Portland cement 45 %, depending on the mix and application discussion. Blend ratios can also be produced on request it generates less heat than Portland cement the. Percentage ranges between 10 % to 30 %, granular product which obtained... Cementitious material form by Granulation different applications attack and even less risk of alkali-silica response with aggregates Reinforced... Mass structures because it generates less heat than Portland cement emergency or works... Case Study 457 4 the world [ 7 14 ], uses, advantages and disadvantages of slag... Without taking full advantage of their properties or disposed rather than used the blast-furnace slag ( ggbs or GGBFS is! On Concrete Technology time are further dried and ground to a usable fineness it is by-product! And flush continuously with running water structures because it generates less heat than cement. The Pfeiffer vertical roller mill all these ask questions, answer people ’ s,... Furnace slag Concrete having higher compressive strength, reduced permeability and resistance to chloride and attacks... Fine blast Furnace slag sand and recycled coarse Aggregate are presented in.... From iron ore dry feed materials slag, combined with Portland cement in sulphate chloride!