This research examined the properties of concrete containing grade 120 slag cement at replacement levels of 0%, 30%, and. The latent hydraulic property of the blastfurnace slag. Application of blast furnace slag sand in cement concretea case study 455 superplasticizer. Slag cement is commonly found in readymixed concrete, precast concrete, masonry, soil cement and high temperature resistant building products. Page 3 blastfurnace slag uses in cements, where it maintains its separate identity and is a cementitious component, are divided. Georgia chapter aci luncheon benefits of slag cement in. Concrete is a superior material for building sustainable structures.
Astmc989 standard specification for slag cement for use in concrete and mortars. Pdf the properties of slag cement and its influence on. Slag cement benefits and use in concrete slag cement news. Slag concrete, cement replacement, granulated blast furnace slag, curing. 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.
Pdf blast furnace slag obtained from dry granulation method as a. Slag cement, often called ground granulated blastfurnace slag ggbfs, is one of the most consistent cementitious materials used in concrete. Slag portland cement, which may be a true portland cement. The properties of slag cement and its influence on the structure of the hardened cement paste article pdf available in procedia engineering 150.
Converter slag was reduced and modified with the addition of 510 weight percent of, and. Slag cements are accepted for use on arkansas department of transportation projects based on certification by the supplier. Rollercompacted concrete pavements as exposed wearing surface version 1. Slag and cement can buildup or adhere to the walls of a confined space.
Slag cement definition is a pozzolana cement using slag as the pozzolana material. Blast furnance slag user guideline portland cement. Guide to the use of slag cement in concrete and mortar. Ground granulated blastfurnace slag ggbs as a cement substitute. For high volume slag concrete, when the replacement ratio exceeds a. Portland slag cementpsc as per the great success achieved by jagdamba cement industries pvt.
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. Dear all, i have measured the bulk density of slag with 12 % moisture which gives 1. Jsw cement leading manufacturer of portland slag cement in. Suppliers are the entities that have responsibility for the final. Cements composition, types finish up cement manufacture properties of component phases types of cements chapter 2 properties of concrete neville chapter 6 concrete. The majority of the demand for these products comes from the field of. The same slag after dried the moisture around 4 % the density gives around. Wsrctr200600067 revision 0 v executive summary batchtobatch variability in the chemical and physical properties of the fly ash, slag and portland cement binders will be an. Modified portland cement portland pozzolan cement, pozzolanmodified portland cement, slagmodified portland cement page 2 of 3 procedure agreement the listed manufacturers. Pdf compressive strength of high volume slag cement concrete. Characteristics of portland blastfurnace slag cement.
Portland blastfurnace slag cement is a mixture of ordinary portland cement and not more than 65 wt. Utilization of steel slag for portland cement clinker. A portland cement mixed with a designated amount of ground granulated blastfurnace slag. It is a recovered industrial byproduct of an iron blast furnace.
Slag cement, or ground granulated blast furnace slag ggbfs, has been incorporated into concrete projects in the u. Where f slag cement is the compressive strength of the mortar made with 30% steelstainless steel slag mpa, and f opc is the compressive strength of pure cement mortar in mpa. Slag cement is a hydraulic binder that, like portland cement, reacts with water to form cementitious material calciumsilicate hydrate or csh. Evaluation of slag reaction efficiency in slagcement mortars. 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. Slag bos and portland cement opc on the compressive strength and the. Concrete proportioning is the selection of proportions of ingredients to make the most economical use of available materials to produce concrete of the required properties why use slag cement in concrete. Slag cement is a recovered material from the iron production process, thus reducing the environmental impact of concrete mixtures.
Benefits of slag cement in concrete october 28, 2015. Effect of steel slag and portland cement in the rate of hydration and. Iron and steel slag products are used in a variety of areas where their unique characteristics are put to effective use. Slag cement helps reduce permeability, sulfate attack, and alkalisilica reaction creating a longer lasting and more resilient concrete.
It is generally recognized that the rate of hardening. S kyway cement company produces slag cement, which is a valued construction material due to its superior performance and environmental qualities. Ground granulated blast furnace slag cement ggbfs is a fine glassy granules which contain cementatious properties. The slag or cement can release, collapse or fall unexpectedly. Molten slag diverted from the iron blast furnace is rapidly chilled.
In concrete, slag cement may be proportioned from 20 to 80 percent depending on the application. Concrete with slag cement will have a slower rate of strength gain than concrete made with 100 percent portland cement. The granulated slag made by the rapid chilling of suitable molten slags from blast furnaces forms the basis of another group of constructional cements. Slag cement is produced by finely grinding granulated blast furnace slag, a glassy byproduct of iron production, and blending it with portland cement to create a product that has a number of. Strength development characteristics of concrete produced.
While there are many applications and benefits of slag cement, a few are highlighted below and detailed information sheets are located here. However, a specialty steel slag cement, which is composed mainly of steel slag, blast furnace slag and portland cement, has been commercially marketed in china for more than 20 years. Application of blast furnace slag sand in cement concrete. Technical issues related to the use of fly ash and slag. In the blast furnace, slag floats to the top of the iron and removed. 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.
Portland slag cement psc portland slag cement psc is manufactured by either intergrinding in the. Slag cement improves many of the strength and durability properties of hardened concrete. Ggbs is a byproduct of the iron and steel industry. Effects of ground granulated blast furnace slag in portland cement. Most concrete made with slag cement will have less.
Pdf recent consideration has been given to use of ggbfs as separate. The use of slag cement as a cementitious material dates back to 1774, when a mortar was made using slag cement in combination with slaked lime mather 1957. I had practically used ppc cement in almost all projects. Evaluation of portland cement concrete pavement with high. Slag cement benefits and use in concrete 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. Slag cement definition of slag cement by merriamwebster. Technical issues related to the use of fly ash and slag during the latefall low temperature construction season introduction current indot specifications section 501. Blastfurnace slag is used in makingfour classes of cement puzzolan, or ordinary slag cement, usually simply called slag cement. Non ferrous slags make up only 12% of the total annual production described below are the main types and uses of slag commercially available in ferrous slag products. V 2, ganapathy ramasamy 2 1assistant professor, department of civil engineering, srm university, chennai, india 2postgraduate, department of civil engineering, srm university, chennai, india received 17 june, 2017. Blast furnace slag cement manufacture, properties and uses. Slag cement not on this prequalified list must be sampled in accordance with the departments guide schedule of sampling and testing.
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