It is suitable for applications in marine environment, mass concreting and sulphate environment, water retaining structures, basement. When used as part of a portland cement concrete, slag reacts with both the water latent hydraulic reaction and the. Sisal agave sisalana field byproduct was selected from a variety of brazilian fibrous. Processing of granulated blast furnace slag and its. Get info of suppliers, manufacturers, exporters, traders of ground granulated blast furnace slag for buying in india. All bsi british standards available online in electronic and print formats. 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.
Groundgranulated blast furnace slag is highly cementitious and high in csh calcium silicate hydrates which is a strength enhancing. A ground granulated blast furnace slag for sulfate resistant cement comprising a mixture of ground granulated blast furnace slag with an alumina content of 12 to 17. Specimens were tested unconfined compressive strength after 1, 7, 28 and 90 days of curing. Concrete qualities with four different ggbs contents expressed as percentage of the mass of portland cement, in.
Ggbfs as a replacement for ordinary portland concrete cement opc to. Cement silica fume ground granulate blast furnace slag blended cement. Nov 01, 2014 ground granulated blast furnace slag sometimes, also referred to as ggbfs obtained by quenching molten iron slag from a blast furnace in water or steam, dried and ground into a fine powder 3. Ground granulated blastfurnace slag ggbfsggbs blast furnace slag is a byproduct of the steel industry.
Properties of concrete with ground granulated blast. To obtain sulfate resistant cement exhibiting homogeneous initial solidification, it is. 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. Use this product is intended to be used in concrete either as a component of composite cements such as blastfurnace cementhigh slag blastfurnace cement or as a direct addition to the concrete mix by the concrete producer. Ground granulated blast furnace slag ggbfs has been used for many years as a supplementary cementitious material in portland cement concrete, either as a mineral admixture or as a component of blended cement. Application of steel slag sand results reduced the cement clinker dosage and increasing the content of industrial waste products. 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. These operate at a temperature of about 1500 degrees centigrade and are fed with a carefully controlled mixture of iron ore, coke and limestone. Ground granulated blastfurnace slag ggbsslag lafarge in. It is suitable for applications in marine environment, mass concreting and sulphate.
Table 3 shows its chemical composition and physical properties together with a typical ordinary portland cement composition for comparison. Iron ore, coke and limestone are fed into the furnace and the resulting molten slag floats above the molten iron at a temperature of about 1500oc to 1600oc. Concrete with ggbfs shows different strength development of normal concrete, but sensitive, to exterior condition. Thus, a precise strength evaluation technique based on a quantitative. Definitions, specifications and conformity criteria. Ground granulated blast furnace slag ggbs is a glassy byproduct of pig iron production and has been used in blended cements for over 140 years 1. Effects of ultrafine ground granulated blast furnace slag on initial setting time, fluidity and rheological properties of cement pastes. An experimental investigation was carried out to enhance the properties of two. Samples of ground granulated blastfurnace slag are sent, periodically, to an independent laboratory for testing. Ground granulated blast furnace ggbf slag used in concrete. Ground granulated blastfurnace slag ggbsslag lafarge. G the ggbs complies with all the specifications required by en 151761 2006, and was added separately in the mixer.
Slag cement is finely ground, glassy granular material formed when molten blast furnace slag is rapidly chilled. Pdf properties of concrete containing ground granulated blast. Slag is primarily composed of cao, sio 2, aluminum oxide al 2 o 3, and magnesium oxide mgo. Activation of ground granulated blast furnace slag by using. In this study natural dolomite, as a source of mgo and cao, was calcined at 800c d800 and c d under air. Use of the cementatious properties of ground granulated blast furnace ggbf slag was reported as early as 1774. Blast furnaces are fed with controlled mixture of ironore, coke and limestone, and operated. Pdf ground granulated blast furnace slag ggbs based. Utilization and efficiency of ground granulated blast. It is a nonmetallic product, consisting of silicates and aluminosilicates of. The exploitation of blast furnace slag as sand replacement. May 26, 2016 ggbs means the ground granulated blast furnace slag is a byproduct of the manufacturing of pig iron.
Ggbfs was activated by naoh, and it was found that the rate of reaction depends on the ph of the starting solution. 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. Groundgranulated blastfurnace slag ggbs or ggbfs is obtained by quenching molten iron. Wainwright pj, rey n 2000 the influence of ground granulated blast furnace slag ggbs additions and time delay on the bleeding of concrete. Standard specification for ground granulated blastfurnace. Both reactive mgo and cao are alternative activators for ground granulated blast furnace slag ggbs. Ground granulated blast furnace slag is used as an additive with portland cement in combination with water and aggregates to form concrete.
Ground granulated 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. Hydration of alkaliactivated ground granulated blast furnace. Blast furnace slag concrete can be reliably pumped when the slag is supplied to the readymix production in a saturated condition. Ground granulated blast furnace slag ggbfs is a byproduct of the steel mill industry and is also used as a mineral admixture in concrete. Use of ggbs as a cementitious material blended with portland cement is based on its activation with alkalis mainly caohe released from hydration of the portland cement gjorv, 1989.
Use of non ground granulated blast furnace slag as fine aggregate in concrete was. Blast furnace slag is nonreactive in a high alkali environment, such as concrete and soils. Description this specification establishes requirements and test methods for slag cement and the slag cement quality monitoring program scqmp. Slag slag is a grainy, grey and metallic byproduct of steel production that can be used to produce slag cement and composite cement. Ground agricultural gypsum and constructiongrade hydrated lime were used as activators in the proportions of 0. In all other cases one filled bag from each nozzle shall be. Regen ground granulated blast furnace slag ggbs is a cement substitute, manufactured from a byproduct of the ironmaking industry. The main product was identified as csh, and, in the pastes with high ph, hydrotalcite was observed at later stages of. 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. Blast furnace slag abbreviated ggbfs, for ground granulated blast furnace slag is broadly described as a mixture of poorly crystalline phases with compositions resembling gehlenite 2caoal 2 o 3 sio 2 and akermanite 2caomgo2sio 2, as well as depolymerized calcium silicate glasses. Ground granulated blast furnace slag ggbfs market size. Properties of concrete containing ground granulated blast furnace. Ground granulated blast furnace slag ggbfsggbs blast furnace slag is a byproduct of the steel industry. Ground granulated blast furnace slag was supplied by civil and marine slag cement ltd.
As with portland cement and pozzolans, the rate of reaction increases with the particle fineness. Pdf soft soil stabilisation using ground granulated blast. Ground granulated blast furnace slag ggbs is a byproduct from the blast furnaces used to make iron. Ground granulated blast furnace slag ggbs or ggbfs is obtained by quenching molten iron slag a byproduct of iron and steel making from a blast furnace in water or steam, to produce a glassy, granular product that is then dried and ground into a fine powder. This specification covers three strength grades of finely ground granulated blastfurnace slag grades 80, 100, and 120 for use as a cementitious material in concrete and mortars.
Find here online price details of companies selling ground granulated blast furnace slag. Strength and durability characteristics of a 70% ground granulated. Ground granulated blast furnace slag ggbs1 is a by product from the blast furnaces used to make iron. Slag cement, ground granulated blast furnace slag ggbfs, granulated blast furnace slag gbfs, slag product form. The main product was identified as csh, and, in the pastes with high ph, hydrotalcite was observed at later stages of hydration. Ground granulated blastfurnace slag ggbs, manufactured from a byproduct of the ironmaking industry, is one of the most common, and most sustainable, substitutes. The iron ore is reduced to iron and the remaining materials from a slag. This paper investigates workability and strength of concrete made with different proportions of waste paper sludge ash wsa and ground granulated blastfurnace slag ggbs as binder, at two wb rations. Ca2735256c sulfate resistant ground granulated blast.
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. Slag cement, or ground granulated blastfurnace slag ggbfs, have improved durability characteristics that help further reduce lifecycle costs, lower. Properties of concrete containing ground granulated blast furnace slag. This specification covers three strength grades of finely ground granulated blast furnace slag grades 80, 100, and 120 for use as a cementitious material in concrete and mortars. 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. Hydration of alkaliactivated ground granulated blast. The hydration of ground granulated blast furnace slag ggbfs at 25 c in controlled ph environments was investigated during 28 days of hydration. Ground granulated blast slag ggbs activated by cement kiln dust ckd have been used as a stabilising agent and their effect on the physical and geotechnical properties of the soft soil have. Ground granulated blast furnace slag referred to as slag hereafter is often used in marine concrete to improve the compactness of its internal structure and its resistance to chloride ion erosion. The slag shall contain no additions and shall conform to the sulfide sulfur and sulfate chemical composition requirement. Ground granulated blast furnace slag in concrete and its.
Note 1the 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. Ground granulated blast furnace slag ggbs was employed as the main component of an alternative binder. One of the most sustainable construction materials available, slag decreases greenhouse gas emissions and the use of virgin materials. 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 manufacturerlocations and approved supply locations shown as hyperlinks are authorized by the. Some of the main properties of fresh concrete by the incorporation of ggbfs is discussed in the. The use of ggbfs in portland cement is governed by aashto m302. Evaluation of strength development in concrete with ground. Ground granulated blastfurnace slag ggbfs, sometimes simply referred to as slag, is a glassy granular material formed when molten. Blast furnance slag user guideline portland cement. Effects of ultrafine ground granulated blastfurnace slag. Ground granulated blastfurnace slag sharjah cement.
Author links open overlay panel luo ting wang qiang zhuang shiyu. Pdf high strength concrete using ground granulated blast. Fly ash, slag, silica fume, and natural pozzolans, chapter 3. Chemicals present in ggbs cao 3050% sio2 2838% al2o3 824% mgo 118% mno 0. Groundgranulated blastfurnace slag ggbs or ggbfs is obtained by quenching molten iron slag a byproduct of iron and steel making from a blast furnace in water or steam, to produce a glassy, granular product that. Us8440016b2 sulfate resistant ground granulated blast. Slag cement is finely ground, glassy granular material formed when molten blastfurnace slag is rapidly chilled.
Ggbs ground granulated blast furnace slag manufacturer from. Blast furnace slag an overview sciencedirect topics. Ggbs ground granulated blast furnace slag manufacturer. The use of ground granulated blast furnace slag ggbs, an industrial byproduct, is well established as a binder in many cement applications where it provides enhanced durability, including high. Ground granulated blastfurnace slag ggbs lafarge emirates ggbs is a premium quality, supplementary cementitious material that can be combined with cement to produce concrete having several advantages namely reduced heat evolution, enhanced. The undersigned certifies that the ground granulated blastfurnace slag in this shipment has been manufactured under strict quality control and complies with the louisiana department of transportation and development specifications for the intended use and. Typically, granulated slag is ground to an airpermeability blaine fineness exceeding that of portland cement to obtain increased hydraulic activity at early ages. This material is obtained by the heating of iron ore, limestone and coke at a temperature about 1500 degree celsius. Groundgranulated blastfurnace slag sometimes, also referred to as ggbfs obtained by quenching molten iron slag from a blast furnace in water or steam, dried and ground into a fine powder 3. Pdf ground granulated blast furnace slag has been constantly in use as cementitious replacement for sustainable infrastructure.
Ground granulated blast furnace slag at best price in india. Activation effects and micro quantitative characterization. This cementitious material provides specific characteristics to readymix concrete. Ground granulated blast furnace slag ggbfs is activated by alkalis or caoh2 etc. Ground granulated blast furnace slag ggbfs is a byproduct from the blast furnaces of iron and it is a very beneficial in the mortar and concrete production. In this research effect of partial replacement of cement with ggbs on strength development of concrete and cured under summer and winter curing environments is established. Astm c989 c989m 18a standard specification for slag.
Rey n 2000 the influence of ground granulated blast furnace slag ggbs additions and time delay on the bleeding of concrete. For years the construction industry has used ground granulated blast furnace slag. Ground granulated blast furnace slag ggbfs was obtained from nippon denro ispat ltd. The activation of ggbs with the calcined dolomites. In sulfate resistant cement obtained by mixing ground granulated blast furnace slag, portland cement, and highdissolution rate gypsum for raising the sulfate resistance, the highdissolution rate gypsum differs in grain size and specific gravity from the portland cement, so uniform mixture is not easy. Strength development characteristics of concrete produced. Soft soil stabilisation using ground granulated blast. Ground granulated blast furnace slag, more commonly referred to as slag or slag cement, is a byproduct of steel production. Activation of ground granulated blast furnace slag by. Properties of concrete with ground granulated blast furnace. Ground granulated blast furnace slag is used as an additive with portland cement in. One of the most sustainable construction materials available, slag decreases greenhouse gas emissions and the use of virgin. The ground granulated blast furnace slag used was slagg bremen, imported from holcim deutschland a. Gypsum was supplied by philip harris scientific ltd.
1321 882 563 595 1400 1376 793 211 52 1377 712 962 1522 1596 1025 227 1334 1243 252 660 61 1278 907 648 875 1167 100 732 1090 1101 210 622 421 1538 1290 1144 808 199 1029 567 1163 841 1354 1433 745 352 249 1271 226 363 172