how slag works concrete

Ground Granulated Blast Furnace Slag in Concrete and its ...

The ground granulated blast furnace slag (GGBFS) is a by-product of iron manufacturing which when added to concrete improves its properties such as workability, strength and durability. This material is obtained by the heating of iron ore, limestone and coke at a temperature about 1500 degree ...

Ground Granulated Blast Furnace Slag (GGBS) | Chemical ...

May 09, 2018· The importance of Ground Granulated Blast Furnace Slag (GGBS) lies in its greener way to become a substitute in concrete material. GGBS being a waste material, it needs proper method for disposal. So incorporating this waste material in concrete can reduce the depletion of conventional concrete components

Supplementary Cementing Materials

Slag Cement, formerly referred to as ground, granulated blast-furnace slag, is a glassy, granular material formed when molten, iron blast-furnace slag is rapidly chilled - typically by water sprays or immersion in water - and subsequently ground to cement fineness. Slag cement is hydraulic and can be added to cement as an SCM.

"Ground Granulated Blast Slag (GGBS) In Concrete – A Review"

Two major uses of GGBS [2] are in the production of quality-improved slag cement, namely Portland Blast furnace cement (PBFC) and high-slag blast-furnace cement (HSBFC), with GGBS content ranging typically from 30 to 70% and in the production of ready-mixed or site-batched durable concrete.

Ground Granulated Blast Furnace Slag - an overview ...

Flexural strength is usually improved by the use of slag cement, which makes it beneficial to concrete paving applications where flexural strengths are important. It is believed that the increased flexural strength is the result of the stronger bonds in the cement-slag-aggregate system because of the shape and surface texture of the slag particles.

Slag - Wikipedia

During the early 20th century, iron ore slag was also ground to a powder and used to make agate glass, also known as slag glass. Modern uses. Ground granulated slag is often used in concrete in combination with Portland cement as part of a blended cement. Ground granulated slag reacts with a calcium byproduct created during the reaction of ...

Global Slag - your online portal for all things slag related

About Global Slag. Global Slag addresses critical areas for slag producers and users alike for both the iron & steel industry and for the cement and construction materials industries around the world. The Global Slag Conference is now established as the world's best meeting place for slag professionals.

Ground granulated blast-furnace slag - Wikipedia

Ground-granulated blast-furnace slag (GGBS or GGBFS) is obtained by quenching molten iron slag (a by-product 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.

Steel Slag - Material Description - User Guidelines for ...

Asphalt Concrete Aggregate, Granular Base, and Embankment or Fill. The use of steel slag as an aggregate is considered a standard practice in many jurisdictions, with applications that include its use in granular base, embankments, engineered fill, highway shoulders, and hot mix asphalt pavement.

Concrete Calculator

Concrete is a material comprised of a number of coarse aggregates (particulate materials such as sand, gravel, crushed stone, and slag) bonded with cement. Cement is a substance that is used to bind materials, such as aggregate, by adhering to said materials, then hardening over time.

How Cement Is Made

Cement is manufactured through a closely controlled chemical combination of calcium, silicon, aluminum, iron and other ingredients. Common materials used to manufacture cement include limestone, shells, and chalk or marl combined with shale, clay, slate, blast furnace slag, silica sand, and iron ore.

Slag Topic - American Concrete Institute

Jul 31, 2019· The American Concrete Institute. 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 consensus-based standards, technical resources, educational programs, and proven expertise for individuals and organizations involved in concrete …

Slag in the mix design - Concrete Engineering general ...

Aug 16, 2007· Slag cement is a wonderful material to work with, from 4,000 psi concrete to 15,000 psi concrete. I've used 50% in 13,000 psi concrete and it works beautifully. Don't be afraid to use 30% or 40%, you won't be sorry. Unfortunity, slag is not available in all areas, especially hard to find in the West.

How Does Silica Fume Work in Concrete? -

How Does Silica Fume Work in Concrete? When silica fume is added to concrete, initially it remains inert. Once portland cement and water in the mix start reacting with each other (hydrating), primary chemical reactions produce two chemical compounds: Calcium Silicate Hydrate (CSH), which is the strength producing crystallization, and Calcium ...

Cement Hazards and Controls Health Risks and Precautions ...

Work practices. When laying concrete block, have different sizes on hand to avoid cutting or hammering to make them fit. Work in ways that minimize the amount of cement dust released. Where possible, wet-cut rather than dry-cut masonry products. Mix dry cement in well-ventilated areas.

What is Slag? (with pictures) -

Jul 14, 2019· After slag is allowed to age, it can be sold for use in other industrial processes. One of the most common is as a constituent of concrete and cement. Slag works very well as a loose aggregate and can be ground to produce a more even grain.

Blast Furnace Slag | National Slag Association

Blast furnace slag is allowed to slowly cool by ambient air, is processed through a screening and crushing plant and is processed into many sizes for use primarily as a construction aggregate. Common uses are as aggregates in ready-mix concrete, precast concrete, hot mix asphalt aggregate, septic drain fields and pipe backfill.

The Uses of Hydraulic Cement and How to Apply

Blend at relatively low speed and be sure to blend only a small amount of cement that can be placed within working time. Start applying the hydraulic cement at the top of the crack making your way down. Press firmly the paste into place, maintaining the same amount of pressure until the cement begins to harden and the leak is stopped.

Effect of Slag Cement on Drying Shrinkage of Concrete

The effect of a partial replacement of cement with slag cement on free shrinkage is evaluated for curing periods between 3 and 28 days. Mixtures include concrete containing different replacement levels of slag cement (30, 60, and 80% by volume) cast with limestone, granite, or quartzite coarse aggregate.

Common Uses for Slag | National Slag Association

Projects such as the bridge pictured here can utilize blast furnace slag as a concrete aggregate. Blast furnace slag has been utilized in concrete masonry for many years. The blast furnace slag can impart many desirable properties to the masonry units such as lighter weight and increased fire resistance.

Blast Furnace Slag Cement -

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 blast furnace slag cement (GGBFS) is a fine glassy granules which contain cementatious properties.

how slag works concrete -

how slag works concrete. Slag Bowls 2013 - Jamie North. Two new works created from concrete and steel slag and inhabited by moss collected from where the slag was obtained. Slag Bowl II and Slag Bowl I. cement...

What is Slag Cement? (with pictures) -

Jul 26, 2019· Slag cement, often called ground granulated blast-furnace slag (GGBFS), is one of the most consistent cementitious materials used in concrete. It is actually a byproduct of iron production. When the iron is processed using a blast furnace, slag and iron both collect at the bottom of the furnace.The molten slag must first be separated from the molten iron.

The use and advantages of slag - voestalpine

Jan 10, 2014· The most common use is as an aggregate in the manufacture of asphalt. It is also successfully used as an aggregate for concrete. Slag use is subject to strict regulations and standards. The use of slag is clearly regulated for particular applications.

Global Slag Conference & Exhibition

The 12th Global Slag Conference has successfully taken place in Düsseldorf, with 130 participants from 29 countries and including a field trip to Dyckerhoff's Lengerich Cement plant. Read the full review of the 12th Global Slag Conference and Exhibition 2017. Image gallery for the 12th Global Slag Conference …

Characteristics and applications of iron and steel slag ...

The advantages of this blast furnace slag cement, such as increasing strength over long periods of time, low heating speed when reacting with water, and high chemical durability, are put to effective use in a broad range of fields including in the construction of ports and harbors and other large civil engineering works. Steelmaking slag ...

NewCem | Lafarge Canada

The NewCem® Slag Cement Advantage. To produce quality slag, a producer needs to have slag with an ideal chemistry from a consistent source and needs to have equipment close to the slag source to provide rapid quenching of the slag. Lafarge engineers and scientists have led North America in the research and development of specifications for slag.

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. It is a recovered industrial by-product of an iron blast furnace.

Effects of Ground Granulated Blast Furnace Slag in ...

Slag cement is often referred to as "ground granulated blast-furnace slag" (GGBFS). As requested in 2001 by slag cement manufacturers and the Slag Cement Association, the American Concrete Institute officially reviewed and changed the terminology from GGBFS to slag cement …

Slag for Driveway -

Dec 16, 2004· I have also heard that the crushed concrete works well, too. Some folks here are taking about slag from other sources. The slag we are talking about here is from steel mills, not anything else. It …

Slag Cement Suppliers & Manufacturers - CEMEX USA

Slag cement can meet the challenges of a wide range of construction projects. We can help you specify a slag cement mix that perfectly matches the requirements of your next project. Our quality control experts will work with you to help you harness the incredible versatility of slag cement…

Tarmac | Slag Aggregates

Concrete In concrete, processed steel and blast furnace slag provide a sustainable alternative to primary aggregates in the production of lightweight or dense ready-mixed concrete. Blast furnace slag can also be used to make Ground Granulated Blast-furnace Slag (GGBS) which is used as a cement replacement in concrete.