The use of ggbs in concrete has proved to improve certain properties, when compared to portland cement concretes. Effect of cementitious waste material ggbs on concrete as. 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. A wide variety of ggbs cement options are available to you, there are 202 suppliers who sells ggbs cement on, mainly located in asia. Yes ggbs is a good partial replacement for cement in concrete mix. Ggbs is a byproduct slag material from the iron and steel indust 7hb. For pcggbs cement, the total heat of hydration is lower than that of pc, and an increase in the ggbs levels resulted in a decrease in the amount of heat liberated. After iterative trial mixes the water cement ratio wc was selected as 0. The pdf file you selected should load here if your web browser has a pdf reader plugin installed for example, a recent version of adobe acrobat reader. The compressive strength tests were conducted for 3, 7, 14 and 28 days of curing on a m25 grade concrete.
The top countries of suppliers are india, china, and vietnam, from which the percentage of ggbs cement supply is 4%, 88%, and 5% respectively. N engineering college, gulbarga, karnataka, india abstract this paper presents a laboratory investigation on. 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. Properties of concrete containing ground granulated blast furnace slag ggbfs at elevated temperatures. Properties of concrete with ground granulated blast furnace. Slower strength development and potentially higher longterm strength. It improves the quality and durability of concrete. Cem iggbs concrete when compared with tarmac bulk portland cement concrete at the same cement content has the following properties. G student structural engineering 2professor 1,2department of civil engineering 1,2k. What is maximum content of ggbs in concrete mix design civil4m. However, as always, we need to ask what the intention is. Murali krishnan2 1 assistant professor, 2 student, department of civil engineering mailam engineering college, mailam, villupuram district, tamil nadu 604 304.
Effect of cementitious waste material ggbs on concrete as a replacement in cement quaid joharbhattiwala kuldeep dabhekar m. This glassy granulate is dried and ground to the required size, which is known as ground granulated blast furnace slag ggbs. The production of ggbs requires less additional energy as compared with the energy needed for the production of portland cement. May 20, 2014 ground granulated blastfurnace slag ggbs is a green construction material used to produce durable concrete. If it is to improve sulfate resistance, it is an excellent thing to do. High strength concrete incorporating ground granulated. In order to promote public education and public safety, equal justice for all, a better informed citizenry, the rule of law, world trade and world peace, this legal document is hereby made available on a noncommercial basis, as it is the right of all humans to know and speak the laws that govern them. Durability properties and microstructure of ground granulated. During this process, the slag gets fragmented and transformed into amorphous granules glass, meeting the requirement of is 12089.
Ggbs and fly ash effects on compressive strength by partial. M40 grades of concrete was considered for a water content wc 0. This material is obtained by the heating of iron ore, limestone and coke at a temperature about 1500 degree celsius. Appearance on the leftggbs used on the rightportland cement 12. Effect of cementitious waste material ggbs on concrete as a. Ground granulated blast furnace slag in concrete and its. Partial replacement of cement with ggbs in concrete. N engineering college, gulbarga, karnataka, india abstract this paper presents a. Partial replacement of cement with ggbs in self compacting concrete for sustainable construction j.
Ggbs partially replaced in concrete in step of 20% 0%, 20%, 40% and 60%. Ggbs, which is a byproduct of the manufacturing of iron in the blast furnace, can partially replace cement in concrete. Civil ijcseierd high strength concrete using ggbs and. The main objective of these tests is to evaluate the influence of varying air content in such mixtures on the structure and frost resistance of concrete. 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. Can i add ggbs beyond the limit specified in is code.
The secondary pozzolanic reactions can result in reduced pore connectivity. Casting and testing detail total number 12 cubes and 8 cylinders were casted. 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. Ground granulated blast furnace slag ggbs is byproduct from the blastfurnaces of iron and steel industries. Experimental study on partial replacement of cement by. The blends can be supplied as preblended factory produced cements, or can be formed in the mixer by adding portland cement and ggbs each from its.
Ggbs cement is widely used in the uk and on the continent for making concrete. Ggbs is very useful in the design and development of highquality cement pastemortar and concrete. May 26, 2016 after the molten iron is tapped off, the remaining molten slag, which consists of mainly siliceous and aluminous residue is then waterquenched rapidly, resulting in the formation of a glassy granulate. High strength concrete incorporating ground granulated blast. Ggbs by partial replacing cement and addition of ggbs without replacing cement. Type of cement and supplementary cementing materials such as ggbfs play an. Scaling resistance and air void characteristics in concrete. Strength and durability studies on lightweight fiber reinforced concrete by incorporating with palm oil shells. Blast furnace slag ggbs has been used as a supplementary material along with the cement. Suitability of bs en 1971 cem ii and cem v cement for. Ggbs cement has exactly the same chemical constituents as ordinary portland cement, only in slightly differing proportions. Experimental study on partial replacement of cement by flyash and ggbs syed asif ali1 professor shaik abdullah2 1p.
Hydration of the combinations of ground granulated blast. Ground granulated blastfurnace slag ggbs to bs 6699. Pdf strength and durability studies on ggbs concrete. The results obtained from the slump, compaction factor, veebee and compressive strength of concrete containing ggbs and fly ash was increased as the curing time increases.
Introduction the blast furnace slag is a byproduct of the iron manufacturing industry. 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. 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. Properties of concrete with ground granulated blast. Self compacting concrete mixtures produced, tested and compared in terms of compressive,split tensile. The cement types used were cem i, cem iib and cem v conforming to bs en 1971. High strength concrete appears to be a better choice for a strong and durable structure. Use of granulated blast furnace slag as fine aggregate in cement mortar m c nataraja1, p g dileep kumar2, a s manu1 and m c sanjay1 this paper investigates the possibility of utilizing granulated blast furnace slag gbfs as a sand substitute in cement mortar, in order to reduce environmental problems related to aggregate mining and waste. 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.
In order to promote public education and public safety, equal justice for all, a better informed citizenry, the rule of law, world trade and world peace, this legal document is hereby made available on a noncommercial basis, as it is the right of all humans to. The blends can be supplied as preblended factory produced cements, or can be formed in the mixer by adding portland cement and ggbs each from its own silo. The materials used for this investigation were locally sourced and consisted of sand, cem iial limestone cement, cem i ordinary portland cement, sulfate resisting portland cement, granulated. Ground granulated blastfurnace slag ggbs is a cementitious material for use as part replacement of cement opc. Nov 01, 2014 also produces a smoother, more defect free surface, due to the fineness of the ggbs particles. As per is codes what is the maximum ggbs content i can add into concrete as a replacement of cement. On top of that, we produce, import and export supply materials for cement and offer national road surfacing and contracting services. With over 200 sites and more than 3900 dedicated employees, were home to everything from aggregates, asphalt, readymixed concrete and precast concrete products. Regen ground granulated blast furnace slag ggbs is a cement substitute, manufactured from a byproduct of the ironmaking industry. 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. Fly ash and ground granulated blastfurnace slag ggbs are regarded as conventional cement constituents in much of the world.
Properties of concrete containing ground granulated blast. The tests covered a range of ggbs levels, which are up to 75% ggbs level and up to 15% mk content by mass for the ternary cement combinations. Ggbs is one of these supplementary materials used to replace with cement to reduce the consumption of the cement. Is ggbs a good partial replacement for cement in concrete mix. The appropriate cement content for concrete of a given 28 day cube strength and slump should be determined from trial mixes. This is important interview question, i want correct answer for it. 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. Apr 19, 2007 ggbs cement has exactly the same chemical constituents as ordinary portland cement, only in slightly differing proportions.
Concrete containg ggbs cement has a higher ultimate strength than concrete made with portland cement. Ground granulated blast furnace slag conclusion jsw cement. However, some concerns regarding its performance in freezing environments have been raised. The replacement of portland cement with ggbs will lead to significant reduction of carbon dioxide gas emission.
Experimental study on partial replacement of cement by flyash. V 2, ganapathy ramasamy 2 1assistant professor, department of civil engineering, srm university, chennai, india. Advantages of ggbs in concrete download as word doc. Ecl009 life cycle inventory of ggbs cement concrete ecocem. In this project,investigations were carried out on durable and. Ground granulated blast furnace slag ggbs jsw cement. Use of ggbs concrete mixes for aggressive infrastructural. Also produces a smoother, more defect free surface, due to the fineness of the ggbs particles.
It has a higher portion of the strength enhancing calcium silicate. A typical combination is 50% ggbs with 50% portland cement, 4but percentages of ggbs anywhere between 20 and 80 % are commonly used. Iron ore, coke, and limestone are fed into the furnace and. In this paper we discuss the test results for concretes containing various amounts of ggbs as compared to concretes made with portland cement. Pdf high strength concrete using ground granulated blast. Flexural behaviour of reinforced concrete beams replacing. It is always used in combination with portland cement, typically in the range 60% pc and 40% ggbs to 30% pc and 70% ggbs, depending on the application.
Granulated blast furnace slag is obtained by rapidly chilling quenching the molten ash from the furnace with the help of water. Partial replacement of cement with ggbs in self compacting. Alternatively, you can also download the pdf file directly to your computer, from where it can be opened using a pdf reader. Tech scholar professor department of civil engineering department of civil engineering g. Blue circle ground granulated blastfurnace slag ggbs. To download the pdf, click the download link below. Ggbs cement prevents the occurrence of efflorescence, the staining of concrete surfaces by calcium carbonate deposits. After the molten iron is tapped off, the remaining molten slag, which consists of mainly siliceous and aluminous residue is then waterquenched rapidly, resulting in the formation of a glassy granulate. Thus it can replace portland cement by up to 85% in making readymixed concrete. Sustainable studies on concrete with ggbs as a replacement.
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