Blast furnace cement an overview sciencedirect topics. The ingredients, proportions and physical requirements of type is cement are listed in astm c595, standard specification for blended hydraulic cements. Is, portland blast furnace slag cement, or it can be added at the concrete plant to make slag concrete. A study on cement mortars incorporating plain portland. Foundation by using slagcrete portland blastfurnace 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. Portland cement, concrete, and the heat of hydration cement on the go portland cement, concrete, and heat of hydration fig. Corrosion propagation after depassivation of steel reinforcement in concrete caused by chloride penetration or carbonation may be governed by anodic, cathodic andor electrolytic resistance properties of the corrosion cell. Introduction low heat portland cement type iv type iv is a low heat of hydration cement for use where the rate and amount of heat generated must be minimized. It develops strength at a slower rate than type i cement original portland cement.
A hydraulic cement pro duced by intergrinding portland cement clinker with other materials, or by blending portland cement with other materials, or by a combination of intergrinding and blending. The latent hydraulic property of the blastfurnace slag gives excellent longterm strength. Introduction by selective cooling of the relatively uniform molten slag that is a coproduct of iron production 0. Laboratory soil evaluation a service available from the lafarge qdsa laboratory will determine the composition and application rates. Laboratory tests of portland blastfurnace slag cements. Durability of portland blastfurnace slag cement concrete. You will note that the ggbfs and the two fly ashes have the same kinds of oxides as the. Groundgranulated blastfurnace slag ggbs or ggbfs is obtained by quenching molten iron.
Cements, blastfurnace cement, portland cement, composition, strength of materials, physical properties of materials, chemical properties, marking, cement and. Properties significant chemoresistance, and suppression of alkaliaggregate reaction type b and c. What is the difference between opc cement and portland. Effects of ground granulated blast furnace slag in portland cement concrete pccwisconsin highway research program whrp 0701 irene k. A portland cement mixed with a designated amount of ground granulated blast furnace slag. Ggbs is an industrial pozzolan, different from natural pozzolans like pfa and silica fume. Nonportland cement activation of blast furnace slag anne elizabeth oberlink university of kentucky, anne. The concrete cubes were photographed, and their sulfate attack ratings and compressive strengths measured at 1, 2, and 5 years. 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. The ground blast furnace slag concrete is significantly more resistant to the diffusion of chlorine than the portland cement of the same grade. 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. Recent investigations of blast furnace slag cementing technologies have been expanded to include portland cementblast furnace slag blends. Cement scancem materials products for engineered concrete.
The purpose of this project was to test a hypothesis of greener cement by testing different material mixtures, specifically nonportland slag. October 2011 health and safety information portland cement. Early age thermal cracking of mass concrete blocks with. Pdf properties of blastfurnace cements cem iiia, b, c. 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. Ground granulated blast furnace slag cement ggbfs is a fine glassy granules which contain cementatious properties. Control of early thermal cracking of raft foundation by. Ts en 1971 new cem cements cem i portland cement cem ii portland composite cement. Mechanochemical modification of cement with high volumes of. Group 5 low heat portland cement type iv team members. Ggbs is a hydraulic cement formed from iron production and has high glassy content for reaction with opc. Ground granulated blastfurnace slag is a byproduct of the steel industry that is naturally cementitious and is often used as a cement replacement material in concrete. Cem i cement cisfb october 2011 yq2 portland cement l page 1 1. This is the reason that portland blast furnace slag cement is used in the construction of dams.
Pelletized blast furnace slag, in contrast to aircooled and expanded blast furnace slag, has a relatively smooth texture and rounded shape. Cementitious applications of ground blastfurnace 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. Minnesota department of transportation certified cement.
Pdf this investigation dealt with the effect of active silica, silica fume sf or rice husk ash rha, on the mechanical and physicochemical. Ut ilizati on of blast furnace sl ag as a raw material for. 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 blastfurnace slag is a waste product of the furnace slag is a waste product of the manufacture of iron. This applies to all cement, ground granulated blast furnace slag ggbfs, and blended cement sold to contractors for use on mndot projects. Effects of ground granulated blast furnace slag in. Its concrete workability is better and it has a higher flexural and compressive strength. Just to make sure that cement and concrete is complicated, tricalcium silicate in its impure form in clinker is historically called alite. The blast furnace slag was grinded and separated by using a series of standard sieves 200, 300, and 400 mesh. The latent hydraulic property of the blast furnace slag gives excellent longterm strength. In general, cem common cements are used for mortars and, when required, bl white cements are used. Read durability of portland blastfurnace slag cement concrete, cement and concrete composites on deepdyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips. Portland cement, concrete, volume 18number 2 and heat of. Manufacture and characteristics of portland blast furnace.
Data sheet health and safety information portland cement bs en 1971. Blastfurnace cement definition and meaning collins. Chemical admixtures and ground granulated blast furnace slag. Certificate this is to certify that the thesis entitled, utilization of blast furnace slag as a raw material for the manufacture of portland cement clinker. The other types of cements are used in concrete for specific. 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. Synthetic aggregates, aggregates, portland cement, blastfurnace cement, slags, composition, fineness, compressive strength, chemical composition, safety measures. Some of the raw materials used to manufacture cement are limestone, shells, and chalk or. It was determined that concrete containing 30% and 50% replacement of ordinary portland cement opc with grade 120 slag cement had a decreased initial compressive and tensile strength compared to opc concrete.
All cement types and materials are of romanian provenance. Cem iii portland blast furnace slag cement cem iv pozzolanic cement cem v composite cement. 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. Comparison of portland cement, ggbfs and fly ash table 2 compares the composition of a typical ground granulated blastfurnace slag to that of a typical type i portland cement, a typical class c fly ash and a typical class f fly ash. Environmental impact analysis of blast furnace slag. In blastfurnace cement, the ground portland clinker is combined with ground blastfurnace slag. This study was conducted based on the iso 1404014044 standards to analyze the environmental impact caused by blast furnace slag utilization for ordinary portland cement production in typical. Properties of blastfurnace cements cem iiia, b, c based on portland cement clinker, blastfurnace slag and cement kiln dusts. Documents that specify or describe the chemical and physical properties of.
Slag bos and portland cement opc on the compressive strength and the hydration mechanisms of blended grounded granulated blast furnace slag. It differs from ordinary portland cement by a slower increase in strength in the initial hardening period and an increased water resistance. 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 blast furnace slag cement features excellent durability, with greatly enhanced long. Ground granulated blastfurnace slag ggbfs, sometimes simply referred to as. What links here related changes upload file special pages permanent link. It is resistant to chemicals and also has more hardened consistency. Osborne 117 turnpike drive, luton lu33rb, uk received 30 march 1998. Ground granulated blastfurnace slag gcp applied technologies. The aim of the present work is to study the effect of cement dust substitution instead of ordinary portland cement opc, blast furnace slag cement bfsc, and sulphate resistance cement src on. 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.
Portland blast furnace slag cement has a typical light color and an easier finish ability. However, by 14 days, the grade 120 slag cement concrete strength equaled or surpassed that of opc concrete. Portland blastfurnace slag cement is a mixture of ordinary portland cement and not more than 65 wt. Ts en 197ts en 197 11 newnew cem cementscem cements cem i portland cement cem ii portland composite cement cem iii portland blast furnace slag cement cem iv pozzolanic cement cem v composite cement 27 different cements 70. The chemical composition of ggbs is almost similar to opc. Laboratory tests of samples of portland blastfurnace slag cements, and of the blastfurnace slags and portland cement clinkers used in their manufacture, obtained from each of the mills making it in the united states in 1955, indicate that the thencurrent federal and astm specifications provide adequate assurance of performance at least equal. Effect of particlesize of blast furnace slag on properties. Blast furnance slag user guideline portland cement.
Nonportland cement activation of blast furnace slag. Blastfurnace slag is used in the production of cement or cementitious materials in two basic ways. Recommended citation oberlink, anne elizabeth, nonportland cement activation of blast furnace slag 2010. The glass content of slags suitable for blending with portland cement typically varies. The blast furnace slag properties are also given in table 1, which was from the was from qinyang iron and steel plant jiaozuo, p. A portland cement mixed with a designated amount of ground granulated blastfurnace slag. 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. Pdf properties of blastfurnace cements cem iiia, b, c based on. Blast furnace slag cement manufacture, properties and uses. Characteristics of portland blastfurnace slag cement. Groundgranulated blast furnace slag is highly cementitious and high in csh calcium silicate hydrates which is a strength enhancing. Portland cement blast furnace slag blends in oilwell.
The mixed amount of granular blast furnace slag in cement is 20% 70% by weight. It has lower setting properties than ordinary portland cement. All bsi british standards available online in electronic and print formats. Certification of any type of portland cement, blended cement, or ggbfs is based on testing of samples at the manufacturing plant, the distribution terminal. A blended cement consisting of an intimately interground mixture of portland cement clink er and granulated. 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 blastfurnace slag cements make up the most successful and widely used variety of slag cements. The use of these types of cement is related to their intended application. Bs 146 specification for blastfurnace slag cements outside the scope of.
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