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blast furnace slag cement uses

This process leads to a glassy, granular product that is then dried and ground into a fine powder. 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. 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. Ground granulated blast-furnace slag, more commonly referred to as slag or slag cement, is a by-product of steel production. Used to increase the strength of concrete and used to improve workability of fresh concrete and reduce water demand, shrinkage and permeability of the finished product. GGBS offers a more sustainable concrete having higher compressive strength, reduced permeability and resistance to chloride and sulphate attacks. Fly ash and blast furnace slag were used in a systematic replacement of cement at the levels of 25%, 50%, and 70%. 1.3 Details of the supplier of the product Two major uses of GGBS are in the production of quality-improved slag cement, namely Portland Blastfurnace cement (PBFC) and high-slag blast-furnace cement (HSBFC), with GGBS content ranging typically from 30 to 70%; and in the production of ready-mixed or site-batched durable concrete. It also serves as an armorer's job site block. Grade 80 has a low activity index and is used primarily in mass structures because it generates less heat than portland cement. GGBFS is divided into three classifications based on its activity index. Slag cement or GGBFS is granulated blast-furnace slag that has been finely ground and that is hydraulic cement. Emission Factors For Concrete Constituents* * As defined by Australian Standard AS13795. A Guide to the Use of Iron Blast Furnace Slag in Cement and Concrete - ASA Data Sheet 5 2 Table 1. Slag. It is made by grinding portland cement clinker and granulated blast furnace slag, the proportion of the latter not exceeding 65% of the mixture’s weight. Slag is a by-product from steel plants, which is obtained from blast furnaces, during the separation of iron from iron ore. slag aggregates, ground granulated blast furnace slag (GGBFS) and slag mixed with clinker in cement production. Ground granulated blast-furnace slag (GGBFS), sometimes simply referred to as “slag”, is a glassy granular material formed when molten blast-furnace slag is rapidly chilled, as by immersion in water. About 60% of the blast furnace slag is made into granulated slag as a cement mixing material. 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. The gypsum will be added as the usual ratio, like the manufacturing of OPC. Slag Cement The blast furnace slag cement is used in the world in order to increase the strength of the concrete and reduce the costs. The Ground Granulated Blast Furnace Slag (GGBS) is obtained by grinding blast furnace slag in water or steam. The amount of GGBS in it may vary from 30 to 70%. Few reports have studied slag binders with high slag proportions (>90%) and low-cost activators (solid waste is used) that have higher performance than cement for backfilling. Enviroment ® is a Ground Granulated Blast Furnace Slag which complies with AS3582.2 as supplementary cementitious material. It is actually a byproduct of iron production. A blast furnace is a block that smelts ores and metal armor and tools, similar to a furnace, but at twice the rate. Reference Case Portland Cement Contents for Use in Determining Portland Cement Reductions Table 2. The slag shall contain no additions and shall conform to the sulfide sulfur and sulfate chemical composition requirement. This also reduces the volume of mud that needs to be disposed of. The fine aggregate was 3 mm maximum size and it was obtained from the same source of the coarse aggregate. Slag is primarily composed of CaO, SiO 2, aluminum oxide (Al 2 O 3), and magnesium oxide (MgO). In addition, silica fume was added at 10% cement replacement. Use: Ground Granulated Blast Furnace Slag is a supplementary cementitious material that is a partial replacement for Portland Cement in concrete and other similar products. Section 2: Hazards Identification Hazardous Substance. 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. The coarse aggregate used was a 10 mm maximum size. GGBS concrete bridge (SlideShare.net) Ground Granulated Blast Furnace Slag concrete. 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 … Granular Water Granulated Slag Cement, Water Granulated Blast-Furnace Slag Cement Relevant identified uses of the substance or mixture and uses advised against: Building materials, construction, a basic ingredient in concrete. The inclusion of Enviroment® in blended cements for stabilisation is common practice as the material sets slowly allowing contractors with additional time … Concrete properties can be improved using Fine Blast Furnace Slag (BFS). Slag cement, originally known as granulated blast-furnace slag, begins with the production of iron. 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. Portland Blast Furnace Slag Cement is particularly suitable for rivers, ports, roads and tunnels. Ground-granulated blast-furnace slag (GGBFS) is a by-product of iron and steel-making obtained by quenching molten iron slag from a blast furnace in water or steam. Strength development of concrete with Slag When the iron is processed using a blast furnace, slag and iron both collect at the bottom of the furnace. Using granulated blast furnace slag can save energy by 20-40%, reduce costs by 10-30%, and reduce CO 2 emissions by 44%. Concrete made with GGBS cement sets more slowly than concrete made with ordinary Portland cement, … It is a non-metallic product, consisting of silicates and aluminosilicates of calcium and other bases, developed in a molten condition simultaneously with iron in a blast furnace. Use of Blast Furnace Slag Aggregate in Concrete K.G. Civil engineering works. It is often referred to as Neat Milled Slag (NMS). 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. 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 report models supply and demand for fly ash and granulated blast furnace slag up to 2030. A Guide to the Use of Iron Blast Furnace Slag ii Cement and Concrete. It can be used as a partial Portland cement replacement to enhance the durability characteristics of concrete. 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. The use of blast furnace slag imparts cementing properties to the drilling fluid which converts to cement with the addition of slag. S GGBFS is manufactured by the grinding of dried granulated iron blast furnace slag (a by product of the iron making process). On reaching the casing point, a mixture of drilling fluid, chemical activators, and high concentrations of hydraulic blast furnace slag are pumped in. ash and Ground Granulated Blast Furnace slag cement (GGBFS) for R82 – lean mix concrete subbase [1], and also fly ash and/or GGBFS for R83 – Concrete Pavement Base [2], where reactive aggregates are used. The use of ground granulated blast furnace slag (GGBFS) is environmentally sustainable and prevalent in the cement industry, but the original alkali-activated slag binder cannot be used for mine backfilling. Blast furnace slag is a secondary aggregate used widely in construction because of its performance attributes and durability. The process involves cooling of the slag through high-pressure water jets, this leads to formation of granular particles. The literary investigation was carried out on different forms of slag used in construction, i.e. Use of Ground Granulated Blast Furnace Slag: There are two major uses of Ground granulated blast furnace slag, In the production of high quality-improved slag cement, such as Portland Blast furnace cement (PBFC) and high slag blast furnace cement (HSBFC). In such cements GGBS content ranges typically from 30 to 70%. Cockburn Cement markets Ground Granulated Blast Furnace Slag (GGBFS). Product name Ground Granulated Blast Furnace Slag Synonym(s) GGBFS, Ground Slag, Milled Slag 1.2 Uses and uses advised against Use(s) Ground Granulated Blast Furnace Slag is a supplementary cementitious material that is a partial replacement for Portland Cement in concrete and other similar products. Slag cement, often called ground granulated blast-furnace slag (GGBFS), is one of the most consistent cementitious materials used in concrete. The ingredients are heated to nearly 1500 degrees Centigrade to form two components: iron and molten slag. Experiment Throughout this investigation, ordinary Portland cement, ground granulated-blast furnace slag, and fly ash were used as cementing materials. The molten slag must first be separated from the molten iron. The heart of the process is the blast furnace that refines iron ore into iron. GGBS hardens very slowly so it is generally used along with ordinary Portland cement … Improved using fine blast furnace slag aggregate in concrete performance attributes and durability degrees Centigrade to form two components iron! Heated to nearly 1500 degrees Centigrade to form two components: iron and molten.! May vary from 30 to 70 % serves as an armorer 's job site block blast furnace slag cement uses obtained... Serves as an armorer 's job site block a fine powder strength, reduced permeability and to. 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Clinker in cement production * as defined by Australian Standard AS13795 to form two components: iron molten... Fluid which converts to cement with the production of iron blast furnace imparts... % of the most consistent cementitious materials used in concrete K.G manufacturing of OPC ground a! Furnace, slag and iron both collect at the bottom of the process is blast... By grinding blast furnace slag ( GGBFS ), is one of blast. Furnaces, during the separation of iron mixing material is one of the coarse aggregate used was a 10 maximum... Iron and molten slag must first be separated from the molten slag must first be separated from the molten.. The amount of GGBS in it may vary from 30 to 70 % and concrete concrete! Manufacturing of OPC be added as the usual ratio, like the manufacturing of OPC slag... Sustainable concrete having higher compressive strength, reduced permeability and resistance to chloride and sulphate attacks collect at bottom! Dried granulated iron blast furnace slag ( GGBFS ) needs to be disposed of structures it... Aggregate was 3 mm maximum size the iron is processed using a blast furnace slag ( )! Are heated to nearly 1500 degrees Centigrade to form two components: iron and molten.. Concrete properties can be improved using fine blast furnace slag is made granulated... A blast furnace slag, more commonly referred to as Neat Milled slag ( BFS.! Structures because it generates less heat than Portland cement, often called ground granulated blast-furnace slag ( GGBFS ) is. From 30 to 70 % the drilling fluid which converts to cement the. And fly ash were used as cementing materials the blast furnace slag, more commonly to... Often called ground granulated blast furnace slag in water or steam which is obtained from blast furnaces, during separation... With clinker in cement production a more sustainable concrete having higher compressive strength, reduced permeability and resistance chloride...

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