Blast furnance slag user guideline portland cement. Experimental hydration of two synthetic glassy blast furnace slags in water. Archived from the original pdf on 28 september 2007. Nonportland cement activation of blast furnace slag. Blast furnace slag as concrete aggregate concrete information, no. To view the content of other pages click on the transfer page icon. Portland blast furnace cement simply called slag cement refers to the hydraulic binding material ground by mixing portland cement clinker, granular blast furnace slag, and appropriate amount of gypsum, codenamed p s. Granulated blastgranulated blast furnace slag is a waste product of the furnace slag is a waste product of the manufacture of iron. This test set up enables an accurate measurement of the adiabatic temperature curve by controlling the temperature of a waterring surrounding the concrete using a differential thermostat. Types of portland cement portland cement is a closely controlled chemical combination of calcium, silicon, aluminum, iron and small amounts of other compounds, to which gypsum is added in the final grinding process to regulate the setting time of the concrete. The ground granulated blast furnace slag is a byproduct of iron manufacturing industry. Portland blastfurnace slag cement is a mixture of ordinary portland cement and not more than 65 wt.
Note 2cement conforming to the requirements for all types are not carried in stock in some areas. The chemical composition of ggbs is almost similar to opc. The results revealed that the limestone can be used instead of gypsum as a retarder. Osborne i1 7 turnpike drive, luton llj3 3rb, uk received 30 march 1998.
Cements, blastfurnace cement, portland cement, composition, strength of materials, physical properties of materials, chemical properties, marking, cement and. The low cost of production of portland blast furnace slag cement makes it cheaper than portland cement. Various grades of portland blast furnace slag cement pbfc and normal portland cement opc concrete have been cured under adiabatic and semitemperature matched curing conditions. The term slag cement will be used throughout this paper when referring to. A portland cement mixed with a designated amount of ground granulated blastfurnace slag. Effects of ground granulated blast furnace slag in portland. Opc ordinary portland cement is the basic type of cement with around 95% of clinker and 5% being gypsum which is added as an additive to regulate setting time of cement.
Ground granulated blastfurnace slag ggbfs ordinary portland cement opc blends are possible materials for use in intermediate and lowlevel radioactive waste repositories. Among its measurable benefits in concrete are better workability and finish ability, higher compressive aggressive chemicals. I, determine whether the proposed type of cement is, or can be made, available. Studies on portland blastfurnace slag cement with limestone. Portland cement cem i and blast furnace slag cement cem iii were tested. Portland blastfurnace slag cements make up the most successful and widely used variety of slag cements. Part 2 will be dedicated to traditional portlandfree binders and waste. It is resistant to chemicals and also has more hardened consistency. The properties of slag cement and its influence on the. Pdf properties of blastfurnace cements cem iiia, b, c based on. The latent hydraulic property of the blast furnace slag gives excellent longterm strength. Laboratory tests of portland blastfurnace slag cements. Standards and specifications of portland blast furnace slag cement.
General hydration model for portland cement and blast. The granulated slag if further grind in to fine powder to make ground granulated blast furnace slag which is a supplementary cementations material. Tiger portland blast furnace slag cement is special blended cement with low heat of hydration characteristics for mass concreting. If the link fails, the document cannot be downloaded, please click on the broken link to let us know. Portland cement concrete, typically referred to as concrete, is a mixture of portland cement a fine powder, water, fine aggregate such as sand or finely crushed rock, and coarse aggregate such as gravel or crushed rock. It was developed from other types of hydraulic lime in england in the early 19th century by joseph aspdin, and usually originates from limestone.
The paper gives an account of the results collected through a wide laboratory and industrial investigation carried out in order to show in which way the compressive strength and the heat of hydration are controlled by a large number of manufacture parameters, such as glass content of the slag, grinding fineness, and gypsum amount of the blended cement. 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. The authors propose different solutions to make the concrete industry more. Pdf analysis of the properties of expansive concrete.
Some of the raw materials used to manufacture cement are limestone, shells, and chalk or. Mixtures of portland cement and blast furnace slag, while having a long history of use in the construction industry, have not been used extensively in oilwell cementing applications. Portland cement is the most common type of cement in general use around the world as a basic ingredient of concrete, mortar, stucco, and nonspecialty grout. Furnace slag is a byproduct from the blastfurnace of iron and it is very beneficial in the concrete production. It is used as a cementitious material in portland cement concrete. Opc ordinary portland cementis the basic type of cement with around 95% of clinker and 5% being gypsum which is added as an additive to regulate setting time of cement. Ultratech premium is a concrete special cement, produced in ultratechs stateoftheart manufacturing facilities with carefully selected premium ingredients to deliver to the customer cement that produces both exceptionally strong as well as exceptionally durable concrete. Effect of ground granulated blast furnace slag as partial cement replacement on strength and durability of concrete. Slag cement, has been incorporated into concrete projects for over a century to improve durability and reduce life cycle costs. The samples of the cement composites were prepared with the following types of cements. A blended cement consisting of an intimately interground mixture of portland cement clink er and granulated blast furnace slag or an inti mate and uniform blend of portland cement and fine granulated blast furnace slag in which the amount of the slag constituent is within specified limits.
It differs from ordinary portland cement by a slower increase in strength in the initial hardening period and an increased water resistance. Pdf the properties of expansive concretes made of two types of cement. Durability of portland blastfurnace slag cement concrete g. Definitions, specifications and conformity criteria bs en 15743. All compositions produce high ultimate strength, but as slag content is increased, early strength is reduced, while sulfate resistance increases and heat evolution diminishes. This is the reason that portland blast furnace slag cement is used in the construction of dams. Portland cement synonyms, portland cement pronunciation, portland cement translation, english dictionary definition of portland cement. Ggbs is an industrial pozzolan, different from natural pozzolans like pfa and silica fume. Compressive strength of portland blast furnace slag cement. Portland blastfurnace slag cement article about portland. The sulphate resistance of portland and blast furnace slag. Grinding reduces the particle size to a cement fineness for use as a hydraulic cement, which is typically less than 3500 cm 2 g.
Groundgranulated blast furnace slag is highly cementitious and high in csh calcium silicate hydrates which is a strength enhancing. Blastfurnace cement definition and meaning collins english. 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. Different standards are used for classification of portland blast furnace slag cement. Note 2 cement conforming to the requirements for all types are not carried in stock in some areas.
Iron ore, coke and limestone are fed into the furnace and the resulting molten slag floats. Foundation by using slagcrete portland blast furnace cement pbfc a dissertation submitted by kong mun kai in fulfilment of the requirements of course eng4111 and 4112 research project towards the degree of bachelor of engineering civil engineering submitted. Standard specification for ground granulated blastfurnace. Note 1 the material described in this specification may be used for blending with portland cement to produce a cement meeting the requirements of specification c 595 or as a separate. Control of early thermal cracking of raft foundation by using. Pdf characteristics of portland blastfurnace slag cement. Characteristics of portland blastfurnace slag cement containing. The term slag cement will be used throughout this paper when referring to finelyground granulated blast furnace slag.
Based on isothermal and adiabatic hydration tests a new general hydration model was developed, valid both for portland cement and blast furnace slag cement. A study on cement mortars incorporating plain portland. Comparisons of the compressive strength between adiabatic, semitemperature matched and ambient cured concrete have been made. A portland cement mixed with a designated amount of ground granulated blast furnace slag. Portland blast furnace slag cement has a typical light color and an easier finish ability.
Compound composition of clinker cement four major compounds formed from the oxides under high temperature in the kiln name oxide notation shorthand tricalcium silicate 3 cao. Effects of ground granulated blast furnace slag in. Being able to reduce the amount of portland cement used in concrete with a lower energyemissions material, such as blast furnace slag, would have a large impact on reducing those emissions. Portland blast furnace cement simply called slag cement refers to the. Using slag cement in concrete can greatly decrease the amount of portland cement typically used for a specific mixture of concrete. 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. Cement scancem materials products for engineered concrete.
By eventually developing greener cement, the ultimate goal of this research project would be to reduce the amount of portland cement. Granulated blastgranulated blastfurnace slag is a waste product of the furnace slag is a waste product of the manufacture of iron. The concrete cubes were photographed, and their sulfate attack ratings and compressive strengths measured at 1, 2, and 5 years. Portland blastfurnace slag cement definition of portland. A binder of phosphogypsumground granulated blast furnace slagordinary portland cement. Groundgranulated blast furnace 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. Manufacture and characteristics of portland blast furnace. Concrete produced using portland blast furnace slag cement has chloride and sulphate resisting properties with improved durability. It is a fine powder, produced by heating limestone and clay minerals in a kiln to form clinker. Effect of ground granulated blast furnace slag as partial. A typical combination is 50% ggbs with 50% portland cement, 4but percentages of ggbs anywhere between 20 and 80 % are commonly used. Characteristics of portland blastfurnace slag cement. Portland blastfurnace slag cement a cement produced by grinding portland cement clinker together with pellets of blastfurnace slag 3060 percent of the total weight and a small amount of gypsum.
What is the difference between opc cement and portland. Early age thermal cracking of mass concrete blocks with. Durability of portland blastfurnace slag cement concrete. All bsi british standards available online in electronic and print formats. Blastfurnace cement definition and meaning collins. Portland blastfurnace slag cement definition is a cement produced by intimately intergrinding a mixture of portland cement clinker and granulated blastfurnace slag in widely varying proportions. Portland cement blast furnace slag blends in oilwell. Pelletized blast furnace slag, in contrast to aircooled and expanded blast furnace slag, has a relatively smooth texture and rounded shape. 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. Thermal activation of ordinary portland cementslag. A binder of phosphogypsumground granulated blast furnace slag. Cementitious applications of ground blastfurnace slag.
It is for this reason that in recent years, the sales of portland blast furnace slag cement have increased. Osborne 117 turnpike drive, luton lu33rb, uk received 30 march 1998. Ggbs is a hydraulic cement formed from iron production and has high glassy content for reaction with opc. A hydraulic cement made by heating a limestone and clay mixture in a kiln and pulverizing the resulting material. The latent hydraulic property of the blastfurnace slag gives excellent longterm strength.
Portland blast furnace slag cement definition is a cement produced by intimately intergrinding a mixture of portland cement clinker and granulated blast furnace slag in widely varying proportions. Ground granulated blast furnace slag ggbfs ordinary portland cement opc blends are possible materials for use in intermediate and lowlevel radioactive waste repositories. Composition, specifications and conformity criteria. Cd for portland cement, portlandpozzolan cement and portland keywords. The content of clinker in slag cement is less than that in portland cement but. Its concrete workability is better and it has a higher flexural and compressive strength. The undersigned certifies that the cement in this shipment is the same cement identified above. Concrete information by the portland cement association. The mixed amount of granular blast furnace slag in cement is 20% 70% by weight. 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.
The manufacture of portland blast furnace slag cement requires 75% less energy than that needed for the production of the portland cement. Binders alternative to portland cement and waste management for. Portland cement is the most common type of cement in general use around the world as a basic. A blended cement consisting of an intimately interground mixture of portland cement clink er and granulated blastfurnace slag or an inti mate and uniform blend of portland cement and fine granulated blastfurnace slag in which the amount of the slag constituent is within specified limits. Modified portland cement portlandpozzolan cement, pozzolan. Portland cement definition of portland cement by the free.
The proportions of ggbs to opc for the two products are as follows. What is the difference between opc cement and portland slag. The granulated blast furnace slag has to be grinded before they are mixed with opc to form pbfc and hspbfc. The results showed that concretes made with ground granulated or pelletized blast furnace slag and portland cement generally had good sulfateresisting properties when the slag content was 70 percent and above. Blast furnace slag cement manufacture, properties and uses. Blast furnace cement an overview sciencedirect topics. Portland blastfurnace slag cement pastes with 5% limestone as a retarder have been investigated. Portland blast furnace slag cement is a mixture of ordinary portland cement and not more than 65 wt. Ground granulated blast furnace slag cement ggbfs is a fine glassy granules which contain cementatious properties. Nonportland cement activation of blast furnace slag the purpose of this project was to produce a greener cement from granulated ground blast furnace slag ggbs using nonportland cement activation.
Portland blastfurnace slag cement a cement produced by grinding portland cement clinker together with pellets of blastfurnace slag 3060 percent of the total weight and. Portland blast furnace cement contains up to 70 % ground granulated blast furnace slag, with the rest portland clinker and a little gypsum. Portland blastfurnace slag cement is a mixture of ordinary portland cement. They include portland cement as covered by aashto m85 2, portland blast furnace slag cement blended cement type is, and slag cement slag cement type s as per aashto m240. Portland blast furnace slag cement features excellent durability, with greatly enhanced long. Moreover, the replacement of cement with 40% of ground granulated blast furnace slag ggbfs under hot water curing at 60 c produced maximum compressive and tensile strengths of concrete. Fe2o3 c4af 58 aluminoferrite tricalcium aluminate 3 cao. The hydration kinetics measured from the free lime and combined water contents as wellas mechanical properties have been determined.
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