Top blast furnace slag suppliers exporters by country. Until the 1950s, ggbfs was used in production of cement or as a cementitious material in two basic ways. Granulated blast furnace slag is used as an aggregate material in construction and as a raw material for ground granulated blast furnace slag ggbfs, a supplementary. Safety data sheet ground granulated blast furnace slag. These byproducts potentially lead to environmental problems such as ground pollutions and global warming, respectively. Blast furnace slag cement manufacture, properties and uses. To overcome procurement data limitations, for ground granulated blastfurnace slag ggbfs, coal combustion fly ash coal fly ash, and silica fume, the report derives. The ingredients, proportions and physical requirements of type is cement are listed in astm c595, standard specification for blended hydraulic cements. The primary ingredient of slag cement is granulated blast furnace slag gbfs that is ground to a fine powder. Properties of hardened concrete with blast furnace slag. What are the difference between tender and contract documents. A portland cement mixed with a designated amount of ground granulated blastfurnace slag.
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. Grinding reduces the particle size to a cement fineness for use as a hydraulic cement, which is typically less than 3500 cm 2 g. On the portland blast furnace slag cement compressive strength and spliiting tensile strength. Iron cement or eisen cement, which is a mixture of slag and ordinary portland cement. Slagground granulated blast furnace slag ggbfs, blast furnace slag, steel slag, granulated slag, pelletized slag, metallic slag, air cooled slag, nonmetallic slag, slag cement, hydraulic slag cement, slag synonyms. 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.
Ground granulated blastfurnace slag gcp applied technologies. It is a recovered industrial byproduct of an iron blast furnace. Portland blastfurnace slag cement is a mixture of ordinary portland cement and not more than 65 wt. Concrete, aci manual of concrete practice, part 1, 2004. The role of the granulated blast furnace slag in sustainable cement. It is a nonmetallic product, consisting of silicates and aluminosilicates of.
It consists primarily of oxides of calcium, silicon. Pdf this paper aimed at investigating the possibility of alkali activated blastfurnace slag bfs to produce cement powder that could be alternative. Ground granulated blast furnace slag in concrete and its. Properties significant chemoresistance, and suppression of alkaliaggregate reaction type b and c. Loesche is a competent partner for its customers from the initial sale to. This involves the activation of the slag with alkalis and sulphates in order to form its hydration product.
Approximately 40% of iron and steel slag products, and 60% of blast furnace slag, are used in cement. Page 3 specifications although the final blended cement in the concrete is simply an improved portland blastfurnace slag cement, it cannot be subjected to the ordinary cement tests. However, some aggregates, such as blast furnace slag, may be used despite their high absorptive capacity because of. For more information call 0 cement 0 236 368 or visit au safety data sheet granulated blast furnace slag.
Ground granulated blast furnace slag is a supplementary cementitious material that is a partial replacement for portland cement in concrete and other similar products. Ground granulated blastfurnace slag cement is a supplementary. Autogenous selfhealing in blast furnace slag cement by. Blastfurnace slag is used in makingfour classes of cement puzzolan, or ordinary slag cement, usually simply called slag cement. Granulated blast furnace slag is considered a hazardous material according to the criteria specified in reach regulation ec no 19072006 and clp regulation ec no 12722008 and osha 29 cfr 1910. Ground granulated blastfurnace slag ggbfs, sometimes simply referred to as. Material classification for iron blast furnace slag bfs inert blast furnace slag iron blast furnace slag bfs is a byproduct of the iron making process. This specification is approved by the environment protection authority under clause 4a of the environment protection waste to resources policy 2010 and applies to blast furnace slag. A blend of cement kiln dust, fly ash, and cement used to make concrete blocks for basement walls. Study on increasing the usage of recovered mineral. Company identification lafarge cement ltd co aggregate industries, bardon hill, coalville, leicestershire.
Ground granulated blast furnace slag 71112 following is a list of slag cement suppliers approved to supply the indicated brand of ggbfs to department work in accordance with the current provisions of both ground granulated blast furnace slag 71112, and materials method 10. Ground granulated blast furnace slag ggbs is a byproduct from the blastfurnaces used to make iron. When ironore, coke and limestone melt in the blast furnace, two products are producedmolten iron, and molten slag. A mixture of portland cement 90 % and silica fume 10 %. The first recorded production of portland blast furnace slag cement was in germany in 1892. The intent is to avoid using highly porous, absorptive aggregates because extra water and cement or asphalt is needed to make a good mix. Material classification for iron blast blast furnace slag.
A guide to the use of iron blast furnace slag in cement and concrete. Types of cement where the blast furnace slag is used in turkey and sales figures for 2006. Blast furnace slag an overview sciencedirect topics. Documents in econstor may be saved and copied for your. Documents that specify or describe the chemical and physical properties of. Pelletized blast furnace slag, in contrast to aircooled and expanded blast furnace slag, has a relatively smooth texture and rounded shape.
As evidence of the rtas commitment to the increased use. Compressive strength portland cement silica fume ground granulate blast furnace slag blended cement. Effect of steel slag and portland cement in the rate of. The coke is combusted to produce carbon monoxide, which reduces the iron ore to a molten iron product. Blast furnace slag bfs is a product of iron production, which has been widely investigated and utilized, particularly as a supplementary cementitious material for cement or alkaliactivated material, owing to its high hydraulic property or alkali activation reactivity. Granulated blast furnace slag ggbfs, blast furnace slag, steel slag, granulated slag, pelletized slag, metallic slag, air cooled slag, nonmetallic slag, slag cement, hydraulic slag cement, slag note.
Pdf properties of blastfurnace slag cement concrete subjected. When mixed with water and portland cement the traditional way that slag cement is used, the concrete sets and hardens into a solid monolithic mass. The first recorded production of blended cement in which blastfurnace slag was combined with portland cement was in germany in 1892. Groundgranulated blast furnace slag is highly cementitious and high in csh calcium silicate hydrates which is a strength enhancing. Autogenous shrinkage and drying shrinkage occur in. Slag cement granulated blast furnace slag 11 benefits of the concretes produced with blast furnace slag cement hydration the reaction between blast furnace slag cement and water is a complicated process.
Effect of fly ash and granulated blast furnace slag addition on fresh concrete. Slag cement is often referred to as ground granulated blastfurnace slag ggbfs. 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. Guide to the use of slag cement in concrete and mortar reported by aci committee 233 aci 233r17. Ground granulated blast furnace slag cement ggbfs is a fine glassy granules which contain cementatious properties. Characteristics of portland blastfurnace slag cement. Fly ash and blast furnace slag for cement manufacturing gbfs is slag from the iron production in basic oxygen furnaces. A study of mechanical properties of structural concrete. It was determined that there is a minimum channel diameter needed. 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.
Ground granulated blastfurnace slag ggbs identified uses of the substance or mixture used as a cementitious component in concrete, motor and grout. Pdf the paper presents the results of experimental research that dealt with the substitution of fi nely ground blast furnace slag for portland cement. Application of blast furnace slag sand in cement concrete. The latent hydraulic property of the blastfurnace slag gives excellent longterm strength.
Effects of ground granulated blast furnace slag in portland cement. Cementitious applications of ground granulated blast furnace slag mf 1845 national slag association. The majority of the demand for these products comes from the field of cement. It consists of nonmetallic minerals, which are tapped off from the blast furnace while molten. For more information call 0 cement 0 236 368 or visit au safety data sheet ground granulated blast furnace slag. Ground granulated blastfurnace slag ggbfs, sometimes simply referred to as slag, is a glassy granular material formed when molten blastfurnace slag is rapidly chilled, as by immersion in water. Molten slag diverted from the iron blast furnace is rapidly chilled, producing glassy granules that yield.
In c219, slag cement is defined as a blend of granulated blastfurnace slag and hydrated lime in which the slag constituent is more than a specified minimum. Application of blast furnace slag sand in cement concretea case study 455 superplasticizer. Gbfs is said to increase durability of concrete due to an increased setting time, which reduces. Ground granulated blast furnace slag is used as an additive with portland cement in. This material is obtained by the heating of iron ore, limestone and coke at a temperature about 1500 degree celsius. Page 3 specifications although the final blended cement in the concrete is simply an improved portland blast furnace slag cement, it cannot be subjected to the ordinary cement tests. The cemsave concrete mixers were chosen so as to be comparable in workability and 28.
In iron manufacturing industry, it is unavoidable to produce large volume of blast furnace slag bfs as a mineral residue for the preparation of pig iron in blast furnaces as well as to discharge high volume of carbon dioxide co 2 gas as a result of consumption of coke. It is generally recognized that the rate of hardening of slag cement is somewhat slower than that of ordinary portland cement during the first 28 days but thereafter increases so that at 12 months the strengths become close to or even exceed those of. Autogenous selfhealing in blast furnace slag cement by sodium monofluorophosphate j. Granulated blast furnace slag is a glassy granular material that varies, depending on the chemical composition and method of production, from a coarse, popcornlike friable structure greater than 4. Pathan 2, made an experimental investigations carried out to evaluate effects of replacing ggbs as cement in concrete to with respect to workability, compressive strength.
Ground granulated blast furnace slag is used as an additive with portland cement in combination with water and aggregates to form concrete. Effects of ground granulated blast furnace slag in. When this slag is actively cooled and ground, gbfs is produced, which can be utilised as a cement or concrete addition. The larger flexural strength of blast furnace slag concrete is the result of the stronger bond which is achieved in cementslagaggregate system due to slag particle shape and surface. Pdf accelerated curing is used for mass production in the precast concrete industry. Ground granulated blast furnace slag used as a partial replacement for portland cement.
Slag cement, ground granulated blast furnace slag ggbfs, granulated blast furnace slag gbfs, slag product form. The use of blast furnace slag article pdf available in metalurgija sisak then zagreb 514. Influence of ground granulated blast furnace slag cement. A direct conversion of blast furnace slag to mesoporous. Steel slag cshi ould be used in cement production in different ways. Fly ash and blast furnace slag for cement manufacturing. As evidence of the rtas commitment to the increased use of recycled materials, in june 1993 the rta in conjunction with the australasian slag association, released a guide to the use of slag in roads. Individual composition of hazardous constituents will vary between slag types.
Granulated blast furnace slag gbfs from primary steel making. Slag portland cement, which may be a true portland cement. Iron is manufactured from iron ore which is a mixture of oxides of iron, silica and alumina. Cementitious applications of ground blastfurnace slag. The advantages and disadvantages associated with the use of fly ash and granulated blast furnace slag are generally known, especially when we consider increased amounts in cement and concrete composition.
Blast furnance slag user guideline portland cement. Blast furnace slag material description origin in the production of iron, iron ore, iron scrap, and fluxes limestone andor dolomite are charged into a blast furnace along with coke for fuel. By processing blast furnace slag into slag cement or. Portland blastfurnace slag cements make up the most successful and widely used variety of slag cements. Founded in 1904 and headquartered in farmington hills, michigan, usa, the american concrete institute is a leading authority and resource worldwide for the development, dissemination, and adoption of its consensusbased standards, technical resources, educational programs, and proven expertise for individuals and organizations involved in concrete design. Iron and steel slag products are used in a variety of areas where their unique characteristics are put to effective use. Is, portland blastfurnace slag cement, or it can be added at the concrete plant to make slag concrete. Blast furnace slag cement is the mixture of ordinary portland cement and fine granulated blast furnace slag.
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