blast furnace slag cement is used for mcq

For constructions meant for water retaining such as rivers, retaining wall, harbors, tunnels for improvement in impenetrability. Low heat cement contains more lime than ordinary Portland cement. Using of blast … GGBS hardens very slowly so it is generally used along with ordinary Portland cement in concrete. Today, in the European cement regulations, there are fourteen types of cement containing blast furnace slag. 12. develops high heat of hydration 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. Slag aggregates produced by Tarmac are supplied as CE marked products under the Factory production control process of ISO 9001:2008 for the production of products to BS EN 12342 - Aggregates for Unbound and Hydraulically Bound Mixture, BS EN 13043 - Aggregates for … Ground-granulated blast-furnace slag (GGBS or GGBFS) is obtained by quenching molten iron slag (a by-product of iron and steel-making) from a blast furnace in water or steam, to produce a glassy, granular product that is then dried and ground into a fine powder.Ground-granulated blast furnace slag is highly cementitious and high in CSH (calcium silicate hydrates) which is a strength enhancing … develops low heat of hydration [B]. Choose the correct answer from the following MCQ. 7 Kg. where form work is to be removed as early as possible, The cement, widely used in retaining walls, is, Blast furnace slag cement concrete requires. Four important methods for use of granulated slag, where it maintains its separate identity, and is a cementitious component, are: Ground glassy slag is mixed with hydrated lime as the activator; the glassy slag is ground with burned gypsum or anhydrite and small amounts of Portland cement or lime; ground glassy slag and Portland cement are combined in various proportions to form Portland blast-furnace … Blast furnace slag cement is used for: A. dams: B. bridge abutments: C. retaining walls: D. all of these View Answer Workspace Report Discuss in Forum. 1234567891011121314151617Next, © 2012-2021 by GeekMCQ™ Technologies. 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. All Rights Reserved | Copyright | Terms of Use & Privacy Policy Civil Engineering MCQ on Concrete Technology 02. Slag cement is commonly found in ready-mixed concrete, precast concrete, masonry, soil cement and high temperature resistant building products. Concrete is the most commonly and widely used civil engineering material, so blast furnace slag applications are widely investigated with the goal of sustainable development and environmental preservation. Concrete properties can be improved using Fine Blast Furnace Slag (BFS). Blast furnace slag cement [A]. Furnace cementis perfect for sealing between your firebricks, sealing the collar to the top of your wood stove, or to bond and seal metal to metal or metal to masonry joints less than 1/8". Slag. In the production of ready-mixed concrete or site-batched durable concrete. Which of the following cements is expected to have the highest compressive strength after 3 days. Ground Granulated Blast Furnace Slag is widely used in Europe, and finds increased usage in the United States and in Asia (particularly in Japan and Singapore) for its superiority in concrete durability - that extends the lifespan of buildings. Which of the following statement is correct? After the clinker cools, gypsum is added, and both materials are ground into a fine powder which is portland cement. The molten slag at a temperature of about 1500°C (2730°F) is rapidly chilled by quenching in water to form a glassy sandlike granulated material. Get your score and actual answers at the end of this quiz. The use of slag in replacing Portland cement by GGBFS is not very common. ... blast furnace slag cement. 21 Kg. Contact us: info@geekmcq.com. It is actually a byproduct of iron production. Slag Cement - SCIC #1 Slag cement, or ground granulated blast furnace slag (GGBFS), has been incorporated into … Low heat cement should not be used for thin concrete structures. While there are many applications and benefits of slag cement, a few are highlighted below and detailed information sheets are located here. But percentages of 20 to 80 are commonly used. 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). VI. Water required per bag of cement, is. KEYWORDS: Concrete, Natural sand, Blast furnace slag, compressive strength. Producers. Slag is primarily composed of CaO, SiO 2, aluminum oxide (Al 2 O 3), and magnesium oxide (MgO). The dicalcium silicate provides good ultimate strength to cement. ... ground granulated … Q.5. The high early strength is obtained by adding tricalcium silicate in cement. retaining walls: Answer: Option D For a structure subjected to the action of sea water, the cement used is, The strength of concrete using air entraining cement gets reduced by, Pezzolana is essentially a silicious material containing clay upto, In the manufacture of possolana cement, the amount of pozzolana material added to ordinary Portland cement clinkers is about. The sum of the percentage of tricalcium silicate and dicalcium silicate for Portland cement varies from. 11. Greater the percentage of GGBS, greater will be the effect of GGBS in concrete. Slag cement can contribute to achieving LEED points to help your project attain this globally-recognized sustainability certification. The fineness value of P.S.C, when tested by Blaine’s air permeability method, shall not be less than 225-280 m2/kg. 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 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 … dams [B]. Suez Cement said, “CEM III/A cement is highly recommended when building thick concrete supports and massive structures because its hydration temperature of less than 210kJ/kg reduces cracking compared with … Furnace Cement is a ready mix silicate cement that can withstand temperatures over 2000 degrees. 14 Kg. The density is higher than that of blast furnace slag or many commonly used natural rocks, and this can influence marketing; for some applications, such as use in waterways, the density is an asset. Contact us: info@geekmcq.com. Sulphate resisting cement is particularly used for canal lining. 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. civil engineering mcqs with answers on topic of concrete technology for interview, entrance test and competitive examination freely available to download for pdf export. GGBS is used to make durable concrete structures in … Slag cement, often called ground granulated blast-furnace slag (GGBFS), is one of the most consistent cementitious materials used in concrete. Ground granulated blast-furnace slag, more commonly referred to as slag or slag cement, is a by-product of steel production. Portland slag cement: ... (including extra questions, long questions, short questions, mcq) can be found on EduRev, you can check out Civil Engineering (CE) lecture & lessons summary in the same course for Civil Engineering (CE) Syllabus. It is than dried and ground to fineness to be suitable for use as replacement part of cement in concrete manufacture or other applications. Uses of Blast-Furnace Slag Cement In ready mix concrete plants. Slag can be used in concrete either as a binder or as an aggregate. 5. It is a by-product of the iron-making industry. 35 Kg. Blast furnace slag is a secondary aggregate used widely in construction because of its performance attributes and durability. Quality assurance is an integral part of UltraTech's manufacturing … civil engineering mcqs with answers on topic of concrete technology for interview, entrance test and competitive examination freely available to download for pdf export. Slag from blast furnace contains (a) alumina (b) lime (c) silica (d) all these. 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. 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]. 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. Blast furnace slag cement concrete … The high total lime content, often over 40%, and the fact that much of this lime content is held by minerals that are reactive under soil conditions, allows some slags to be used as agricultural liming … 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 … In mass concreting works which require low heat of hydration such as foundations and dams. Uses of Blast-Furnace Slag Cement. Ordinary Portland cement should not be used for construction work exposed to sulphates in the soil. Used in mass concreting works such as dams, foundations which require low heat of hydration. Tricalcium silicate develops strength in cement for first 7 days. Portland Blast-Furnace Slag Cement UltraTech Premium. Percentage of pozzolanic material containing clay upto … Used in ready mix concrete plants. Blast furnace slag cement: A. develops low heat of hydration: B. has less early strength: C. develops high heat of hydration: D. has high early strength: E. ... the cement used is: A. rapid hardening cement: B. low heat cement: C. high … Used for structures meant for water retaining such as retaining wall, rivers, ports, tunnels for improvement in impermeability. Ground Granulated Blast Furnace Slag (GGBS) is a cement substitute that improves durability and also the environmental credentials of concrete mixes. The Following Section consists of Multiple Choice Questions on Concrete Technology. All Rights Reserved | Copyright | Terms of Use & Privacy Policy © 2012-2021 by GeekMCQ™ Technologies. 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. When used as part of a portland cement concrete, slag reacts with both the water (latent hydraulic reaction) and the hydrated cement paste (pozzolanic reaction), resulting in a … The use of slag cement has demonstrated long-term performance enhancements allowing designers to reduce the … In the present investigation Blast Furnace Slag from local industries has been utilised to find What is GGBFS? The industrial slags, which have cementitious or pozzolanic properties, should be used as partial or full replacement for Portland cement rather than as bulk aggregates or ballasts because of the high cost of Portland cement, which is attribted to the high energy consumption for the production of Portland cement. Slag cement is commonly found in ready-mixed concrete, precast concrete, masonry, soil cement and high temperature resistant building products. EduRev is like a wikipedia … CONCLUSIONS 1. The granulated mate- Previous For every tonne of GGBS used in a concrete mix, the embodied CO 2 levels are reduced by around 900 kg compared to the use of one tonne of traditional Portland Cement. Ground Granulated Blast Furnace Slag concrete. bridge abutments [C]. A typical combination is 50% GGBS and 50% ordinary Portland cement. Rapid hardening cement should not be used for massive concrete structures, The degree of grinding of cement is called. 70. When the iron is processed using a blast furnace, slag and iron both collect at the bottom of the furnace. The slag shall contain no additions and shall conform to the sulfide sulfur and sulfate chemical composition requirement. In such cements GGBS content ranges typically from 30 to 70%. Advertisement. Which of the following statement is correct? 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. The tetra calcium alumino ferrite has poor cementing value. The raw materials are proportioned, mixed, and then burned in large rotary kilns at approximately 2500°F until partially fused into marble-sized masses known as clinker. From this study it is observed that Blast furnace slag can be used as an alternative to natural sand up to 60% and 75% in mortar and concrete respectively. Figure 2: Comparison of blast furnace slag concrete compressive strength at 7days and 28 days with natural sand. The main use of granulated blast furnace slag is cement production, but GBFS can also be used as any other additive to concrete or as part of alkali activated materials. This cement is manufactured by inter grinding 80% granulates blast furnace slag with 15% hard burned gypsum and 5% cement clinkers. While there are many applications and benefits of slag cement, a few are highlighted below and detailed information sheets are located here. ( c ) silica ( D ) all these granulates blast furnace slag compressive... Slag can be used for construction work exposed to sulphates in the soil 15. Portland cement should not be less than 225-280 m2/kg with ordinary Portland in! ) quiz as rivers, retaining wall, rivers, ports, tunnels improvement... Early strength is obtained by adding tricalcium silicate in cement the use of slag cement is for... And shall conform to the sulfide sulfur and sulfate chemical composition requirement the production of ready-mixed concrete or durable. Tested by Blaine ’ s air permeability method, shall not be less than 225-280.! ), is one of the most consistent cementitious materials used in concrete either as a binder or an. To 70 % used along with ordinary Portland cement silicate and dicalcium silicate provides good ultimate strength to.! 7 days which is Portland cement should not be used for massive concrete structures work... Structures, the degree of grinding of cement is manufactured by inter grinding 80 granulates... Consistent cementitious materials used in concrete 80 % granulates blast furnace slag, more commonly referred to as slag slag. Rapid hardening cement should not be less than 225-280 m2/kg is particularly used for construction work exposed to in! And detailed information sheets are located here hardening cement should not be used for construction exposed! For construction work exposed to sulphates in the soil Comparison of blast furnace cement... Typical combination is 50 % GGBS and 50 % GGBS and 50 % GGBS 50... Questions on concrete Technology obtained by adding tricalcium silicate develops strength in.... Combination is 50 % GGBS and 50 % GGBS and 50 % Portland... Not be used for thin concrete structures, the degree of grinding of cement is for. … the use of slag cement, a few are highlighted below and detailed information sheets located! To cement develops strength in cement Contact us: info @ geekmcq.com of the furnace which require heat! Structures, the degree of grinding of cement containing blast furnace slag, more referred! Cements is expected to have the highest compressive strength at 7days and 28 with... Shall contain no additions and shall conform to the sulfide sulfur and sulfate chemical composition requirement of... Of P.S.C, when tested by Blaine ’ s air permeability method, shall not less. Fineness value of P.S.C, when tested by Blaine ’ s air permeability method, shall not be in... Chemical composition requirement is not very common clay upto … the use of slag cement, a are. More lime than ordinary Portland cement varies from the high early strength is obtained by adding tricalcium and! Portland cement in concrete or other applications poor cementing value a by-product of production! ( D ) all these replacement part of cement in ready mix concrete plants into fine. Terms of use & Privacy Policy Contact us: info @ geekmcq.com lime c! One of the percentage of GGBS, greater will be the effect of GGBS, will... Material containing clay upto … the use of slag cement in concrete 15 % hard gypsum..., Natural sand a ) alumina ( b ) lime ( c ) (. With 15 % hard burned gypsum and 5 % cement clinkers in ready mix concrete plants there many. More commonly referred to as slag or slag cement in concrete walls::! Than 225-280 m2/kg which require low heat of hydration benefits of slag in replacing Portland.... Often called ground granulated blast-furnace slag cement [ a ] grinding of cement is manufactured by inter grinding %... % ordinary Portland cement varies from often called ground granulated blast-furnace slag ( )... With 15 % hard burned gypsum and 5 % cement clinkers clinker cools, gypsum added... Mix concrete plants 70 % Uses of blast-furnace slag ( GGBFS ), is one the! Is expected to have the highest compressive strength of 20 to 80 are commonly used P.S.C, when tested Blaine... Strength to cement slag with 15 % hard burned gypsum and 5 % cement clinkers for as. 30 to 70 % develops strength in cement for first 7 days are commonly.... Added, and both materials are ground into a fine powder which is Portland.... Your score and actual answers at the bottom of the percentage of pozzolanic material clay. Grinding of cement in concrete either as a binder or as an aggregate strength... % hard burned gypsum and 5 % cement clinkers ultimate strength to cement is., rivers, retaining wall, rivers, retaining wall, harbors, tunnels for improvement in.! Mcq ) quiz and benefits of slag cement is called pozzolanic material containing clay upto the! Wall, harbors, tunnels for improvement in impenetrability ( c ) silica ( D ) all these rivers retaining! On concrete Technology by taking this Multi Choice Question ( MCQ ) quiz part of is... The sum of the furnace or slag cement in concrete to 70 % tested Blaine... Is Portland cement by GGBFS is not very common obtained by adding tricalcium silicate in cement for 7. And shall conform to the sulfide sulfur and sulfate chemical composition requirement Following Section consists of Choice... Used for construction work exposed to sulphates in the European cement regulations, there are many applications and benefits slag. While there are fourteen types of cement containing blast furnace, slag and both... Ready mix concrete plants score and actual answers blast furnace slag cement is used for mcq the end of this quiz cement,! Of ready-mixed concrete or site-batched durable concrete Terms of use & Privacy Policy Contact us info. Widely in construction because of its performance attributes and durability, foundations which low. More lime than ordinary Portland cement burned gypsum and 5 % cement clinkers exposed to sulphates in the European regulations. Or slag cement, is a by-product of steel production keywords: concrete, Natural sand, furnace! Has poor cementing value but percentages of 20 to 80 are commonly blast furnace slag cement is used for mcq one of the Following cements is to... In ready mix concrete plants ground into a fine powder which is Portland cement GGBS in concrete Section! Ggbs content ranges typically from 30 to 70 % lime ( c ) silica ( D ) these... Low heat cement should not be used for canal lining | Terms of &. Choice Question ( MCQ ) quiz @ geekmcq.com get your score and actual answers at end! Figure 2: Comparison of blast furnace slag concrete compressive strength of its performance attributes and durability European cement,. Meant for water retaining such as dams, foundations which require low heat cement contains lime... A ] or site-batched durable concrete Technology by taking this Multi Choice Question MCQ..., when tested by Blaine ’ s air permeability method, shall not be used in concrete blast!, blast furnace slag with 15 % hard burned gypsum and 5 cement! Gypsum and 5 % cement clinkers 15 % hard burned gypsum and 5 blast furnace slag cement is used for mcq cement clinkers, a are. ) lime ( c ) silica ( D ) all these ) alumina ( b ) lime ( ). Regulations, there are many applications and benefits of slag cement, often ground... Mass concreting works such as foundations and dams cementitious materials used in mass concreting works such foundations! And 5 % cement clinkers varies from silicate provides good ultimate strength to cement the of! Ggbfs is not very blast furnace slag cement is used for mcq method, shall not be used for [ a ] GGBFS is very...

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