Dust control is the same as that required for portland cement. Slower strength development and potentially higher longterm strength. On top of that, we produce, import and export supply materials for cement and offer national road surfacing and contracting services. On the basis of the wels for similar materials eg, portland cement and calcium silicate, lafarge cement recommend applying a wel of 10mg m.
Use of ggbs as cement replacement emerged simultaneously reduce cost of concrete and help to reduce rate of cement consumption. The introduction of ggbs has a great effect on the microstructure of concrete, which includes the interfacial transition zone itz between aggregates and the hardened bulk cement paste. During this process, the slag gets fragmented and transformed into amorphous granules glass, meeting the requirement of is 12089. What is maximum content of ggbs in concrete mix design civil4m. He also suggested that the total cementitious material has to be increased by 10% for 50% replacement of ggbs and by 20% for 65% replacement. They have reported that when the concrete is cured in water, compressive strength of concrete keeps increasing until the end of the testing period of 365 days. To evaluate durability of ggbs concrete against chlorideinduced corrosion. The production of ggbs requires less additional energy as compared with the energy needed for the production of portland cement. Resistance to freeze and thaw of low strength concrete containing ggbs and. A typical combination is 50% ggbs with 50% portland cement, 4but percentages of ggbs anywhere between 20 and 80 % are commonly used. Using one tonne of regen in concrete reduces the embodied co2 by around 900kg, compared to using one tonne of portland cement, and also increases its durability.
Chemically it is similar to, but less reactive than, portland cement pc. Ground granulated blastfurnace slag ggbs, manufactured from a byproduct of the ironmaking industry, is one of the most common, and most sustainable, substitutes. Granulated blast furnace slag is obtained by rapidly chilling quenching the molten ash from the furnace with the help of water. Fly ash and ground granulated blastfurnace slag ggbs are regarded as conventional cement constituents in much of the world. Partial replacement of cement with ggbs in concrete. Gudadappanavar assistant professor department of civil engineering presented by. Ggbs by partial replacing cement and addition of ggbs without replacing cement.
Experimental study on partial replacement of cement by flyash and ggbs syed asif ali1 professor shaik abdullah2 1p. Properties of concrete with ground granulated blast furnace. Ggbs dust does not present any fire or explosion hazard. In this study experimental investigation on ggbsground granulated blast furnace slag has carried out which is byproduct of iron industry and also can be used as replacement with ordinary portland cement in concrete. One of the main ingredients in a normal concrete mixture is portland cement. Pdf design of selfcompacting concrete with ground granulated. On the other hand, it also contributes to environmental protection because it minimizes the use of cement during the production of concrete. This material is obtained by the heating of iron ore, limestone and coke at a temperature about 1500 degree celsius.
Properties of concrete with ground granulated blast. Durability of mortars containing ground granulated blastfurnace. Pdf high performance concrete with ggbs and robo sand. Experimental study on partial replacement of cement by. There have been a few attempts of this nature reported in literature. It mainly contains calcium silicoaluminate with high reactivity. This research work focuses on strength characteristics analysis of m20, m25, m30, m35, m40, m45, m50 grade concrete with.
High strength concrete incorporating ground granulated. Blue circle ground granulated blastfurnace slag ggbs. Ggbs is not currently listed in the table of workplace exposure limits wels, approved by the uk health and safety commission. Estimation of corrosionfree life for concrete containing ground. Suitability of bs en 1971 cem ii and cem v cement for. Geopolymer concrete with replacement of cement hamid khan, dushyant purohit, deependra bagara, hanuman sahay pahadiya department of civil engineering poornima group of institutions, jaipur abstract concrete is the most abundant manmade material in the world. Elchalakani and others published sustainable concrete with high volume ggbfs to build masdar city in the uae find, read and. Properties and microstructure of ggbsmagnesia pastes. Ggbs partially replaced in concrete in step of 20% 0%, 20%, 40% and 60%. Our pdf maker lets you create professional looking pdfs from 300 file formats.
Split tensile strength of concrete for m40 vs % of ggbs from figure 6 and 7, it is observed that at about 40% replacement of cement with ggbs, concrete attains its maximum split tensile strength. Ggbs is used to make durable concrete structures in combination with ordinary portland cement andor other pozzolanic materials. The leading user of ggbs is the netherlands, where 54% of cement used in making concrete comprises ggbs cement. Concrete, aci manual of concrete practice, part 1, 2004. The itz is a weakness zone in the microstructure of concrete, but it is one of the most important factors influencing the performance of concrete. Micro fine ggbs,cement making ggbs,concrete making ggbs.
The influence of hightemperature curing on the hydration. Concrete made with ggbs cement sets more slowly than concrete made with ordinary portland cement, depending on the amount of ggbs in the cement mix, but also continues to gain strength over a longer period leading to improved overall durability and life expectancy. The replacement of portland cement with ggbs will lead to significant reduction of carbon dioxide gas emission. A wide variety of ggbs cement options are available to you, there are 203 suppliers who sells ggbs cement on, mainly located in asia. Pdf ground granulated blast furnace slag ggbs, due to its pozzolanic nature, could be a great asset for the modern construction needs, because slag. 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. Sp has been taken 10 ml for 1 kg of cement according to quantity of cement as per is.
With over 200 sites and more than 3900 dedicated employees, were home to everything from aggregates, asphalt, readymixed concrete and precast concrete products. What is maximum content of ggbs in concrete mix design. One such alternative is geopolymer concrete gpc, this concrete uses no portland cement, pozzalonic materials like fly ash and ggbs, rich in silica and alumina are used. Use of ggbs in concrete is recognized by leed leadership in energy and environmental design and add points towards its certi. Swamy and bouikni reported that by a proper mix proportioning ggbs concretes can be produced with strengths comparable to those with ordinary portland cement from the 3rd day onwards. Effects of ground granulated blast furnace slag in portland cement. N engineering college, gulbarga, karnataka, india abstract this paper presents a. Ggbs can also be moved by airslides, cement screws and bucket elevators. Abhijeet kumar singh 2sd11cv001 aquib nasir razi 2sd11cv009 dibyajyoti sarma 2sd11cv020 kamlesh kumar 2sd11cv031 8th semester b. Some of the main properties of fresh concrete by the incorporation of ggbfs is discussed in the. Geopolymer cement is a state of art novelty and tends to create a. The cement types used were cem i, cem iib and cem v conforming to bs en 1971. Pdf sustainable concrete with high volume ggbfs to build. Transportation is by bulk tankers, as for portland cement.
Ggbs and pfa are materials that can be added to cement made from clinker to produce different types of grey cement, or to replace a proportion of cement made from clinker when making concrete. Ggbs has been widely used in europe, and increasingly in the united states and in asia particularly in japan and singapore for its superiority in concrete durability, extending the lifespan of buildings from fifty years to a hundred years. Since the capillary pores can be quite large, the high degree of capillary porosity, greatly weakens the hcp. Effects of ggbs on geotechnical properties of black cotton soil under the guidance of shri. Introduction to ground granulated blastfurnace slag. Pdf strength and durability studies on ggbs concrete. Kanta rao abstract the major problem the world is facing today is the environmental pollution. Cement ordinary portland cement of43 grade parashakthi was used in this investigation. When mixed with water it will hydrate in a similar way to portland cement. A primary reaction which involves the hydration of ordinary portland cement with water giving calcium silicate hydrate with certain alkalis like calcium hydroxide, sodium hydroxide and potassium hydroxide as shown in the below equation. Properties of fresh concrete with ground granulated blast. Alkaliactivated slag aas binders have shown potential to replace.
A cem i, 52,5n portland cement used for reference concrete mix for blending with fa, ggbs and sf to produce cem ii and cem v cements for the study. Cem i ggbs concrete when compared with tarmac bulk portland cement concrete at the same cement content has the following properties. Ground granulated blastfurnace slag the concrete society. The proportions used in concretemaking vary quite considerably and the price of the material is key when it comes to producing a cubic metre of concrete to the required specification at the lowest possible cost. Create, manage, convert, edit, annotate secure pdfs on any device. When ggbs is mixed with ordinary cement you get ggbs low carbon cement. The influence of ground granulated blast furnace slag ggbfs on the characteristics of fresh concrete will let us know more about the working of ggbfs in a broader way. Study on fly ash and ggbs based geopolymer concrete under.
Department of civil, structural and environmental engineering. Ground granulated blastfurnace slag ggbs to bs 6699. In the calculation of the equivalent watercement ratio for mixes with ggbs, an efficiency factor of 0. Sodium sulfate expansion tests sulfuric acid tests ultrasonic tests. These problems are forcing civil engineers to investigate an alternative to conventional concrete. The raw materials are composed primary of low calcium silicates. Ground granulated blast furnace slag conclusion jsw cement. Effect of hightemperature curing methods on the compressive. Is ggbs a good partial replacement for cement in concrete. The cubes, cylinders and prisms ar e tested for compressive strength, split tensile strength, flexural stren gth. Ground granulated blastfurnace slag ggbs is a glassy material from byproduct of blast furnace ironmaking. Although portland blast furnace slag cement, which is made by intergrinding the granulated slag with portland cement clinker blended cement, has been used for more than 60 years, the use of separately ground slag combined with portland cement. International journal of engineering science and technology vol. Application of ground granulate blast furnace slagsteel slag.
Ground granulated blast furnace slag ggbs jsw cement. Bfs blast furnace slagmixed concrete at an earlier age. May 26, 2016 cement with ggbs replacement has emerged a major alternative to conventional concrete and has rapidly drawn attention of concrete industry due to its cement saving, energy saving, cost saving and environmental benefits. Sugarcane baggase ash scba, granulated blast furnace slag ggbs, steel fibers, concrete. G student structural engineering 2professor 1,2department of civil engineering 1,2k. Ggbs is listed in the worlds largest and most authoritative dictionary database of abbreviations and acronyms. The mix design of self compacting concrete calculations are done as per is.
Two major uses of ggbs 2 are in the production of qualityimproved slag cement, namely portland blast furnace cement pbfc and highslag blastfurnace cement hsbfc, with ggbs content ranging typically from 30 to 70% and in the production of readymixed or sitebatched durable concrete. Babu and kumar studied the efficiency of ggbs in concrete shows that increase of 8. The strength development of alkali activated slag cement concrete cured in water bath, sealed and exposed to air conditions was studied earlier 2. Microfine is a specially processed product based on high glass content with high reactivity obtained through the process of controlled granulation. Thus this shows that cement content can be reduced in soil solidification when. Ggbs can improve the fluidity of fresh concrete, reduce its bleeding and postpone the setting when portland cement is partially replaced by ggbs in concrete. A replacement rate of up to 80% is permitted by nenen 206. Groundgranulated blastfurnace slag ggbs or ggbfs is obtained by quenching molten iron slag a byproduct of iron and steelmaking from a blast furnace in water or steam, to produce a glassy, granular product that is then dried and ground into a fine powder. Experimental study on geopolymer concrete incorporating ggbs v. Example blending it with 70% of ggbs psc will have 70% ggbs and opc 30% total will some to 100%. Dec 21, 2017 during this process ggbs is added into it as per % and grinded with clinker and gypsum.
Free online pdf creator create pdf online soda soda pdf creator online offers a full set of features directly in your web browser. The cementitious properties of blastfurnace slag were discovered in the late 19th century and it has been widely used in concrete manufacture for over 100 years. Cem iggbs concrete when compared with tarmac bulk portland cement concrete at the same cement content has the following properties. After iterative trial mixes the watercement ratio wc was selected as 0. This is why concrete from mixes with high water cement ratios tends to be weaker than concrete from mixes with water cement ratios in the vicinity of 0. Geopolymer concrete will be introduced as an alternative concrete which did not use any cement in its mixture and used metakaolin and ggbs as alternative cement.
The proportions used in concrete making vary quite considerably and the price of the material is key when it comes to producing a cubic metre of concrete to the required specification at the lowest possible cost. Final setting time min 265 the granulated slag is extracted from the process of pig iron production, where the molten slag is quenched with cold water, producing glassy granulates. Dejadurability of the mortars and concretes containing ground converter slag. I had practically used ppc cement in almost all projects. Islam department of civil engineering, chittagong university of engineering and technology, chittagong. Regen ground granulated blast furnace slag ggbs is a cement substitute, manufactured from a byproduct of the ironmaking industry. The use of microfine results in hydrated cement matrix to comprise of very small pores. After iterative trial mixes the water cement ratio wc was selected as 0. Slag it is possible to reduce the carbon footprint of cement by up to.
Groundgranulated blast furnace slag is highly cementitious and high in csh calcium silicate hydrates which is a strength enhancing. In this study partial replacement of cement opc 43grade by groundgranulated blast furnace slag which varies from 5% to 25% at interval of 5% by total weight of opc. During this process ggbs is added into it as per % and grinded with clinker and gypsum. Request pdf the influence of hightemperature curing on the hydration characteristics of a cementggbs binder the influence of high temperature curing at. The test programme comprised monitoring performance through. Ordinary portland cement opc has been traditionally used in the construction of concrete silos in ireland. Ggbs cement is a recycled product and it replaces the use of portland cement in concrete on a oneforone basis. Self compacting concrete mixtures produced, tested and compared in terms of compressive,split tensile. Cement with ggbs replacement has emerged a major alternative to conventional concrete and has rapidly drawn attention of concrete industry due to its cement saving, energy saving, cost saving and environmental benefits. Ground granulated blastfurnace slag ggbs is a cementitious material for use as part replacement of cement opc. Experimental study on use of scba and ggbs ash by partially. Itz microstructure of concrete containing ggbs sciencedirect.
What is the advantage of using ggbs as replacement of. A wide variety of ggbs price options are available to you, there are 68 suppliers who sells ggbs price on, mainly located in asia. After grinding it is stored in silo and then sent for delivery through bag packs or in bulker as loose cement. Higher proportion of the strengthenhancing calcium silicate hydrates csh than concrete made with portland cement only, and a reduced content of free lime, which does not contribute to concrete strength.
The application of a composite binder in a massive concrete structure under severe. Tech student, 2 assistant professor department of civil engineering, east west institute of technology, bengaluru, karnataka, india abstract construction has been most important human activity since ancient time. The ground granulated blast furnace slag ggbfs is a byproduct of iron manufacturing which when added to concrete improves its properties such as workability, strength and durability. Casting and testing detail total number 12 cubes and 8 cylinders were casted.
Very occasionally, it can be found up to a ratio of 90% ggbs and 10% pc. Ground granulated blast furnace slag in concrete and its. Belgium 25%, italy 27% and germany 14% also have high ggbs cement usage levels. Study on fly ash and ggbs based geopolymer concrete under ambient curing 1 rohit zende, 2 mamatha. Effects of the addition on the frost scaling resistance and chloride migration vera monica ferreira correia 2 therefore, airentrained concrete mixes with an equivalent water cement ratio of 0. Experimental study on geopolymer concrete incorporating ggbs. It improves the quality and durability of concrete.
Effect of curing conditions on the compressive strength and. Use of ggbs concrete mixes for aggressive infrastructural. The secondary reaction involves the alkalis is reacted with the ground granulated blast furnace slag. Strength ggbs cement has a higher ultimate strength than concrete made with portland cement. The appropriate cement content for concrete of a given 28 day cube strength and slump should be determined from trial mixes. Concrete made with ggbs cement sets more slowly than concrete made with ordinary portland cement, depending on the amount of ggbs in the cement mix. However, by mixing ordinary cement with a material called. Yes ggbs is a good partial replacement for cement in concrete mix. Portland cement pc in many civil engineering applications. Partial replacement of cement with ggbs in self compacting. Ggbs was used to replace portland cement at a replacement ratio of. Steel slag has cementitious properties, and the hydration process and hydration. Ground granulated blastfurnace slag ggbs is the slag from iron producing blastfurnaces that is rapidly quenched in water and then ground into a powder.
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