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blast-furnace slag is also used as fine or coarse aggregate The aggregates are usually washed and graded at the pit or plant Some variation in the type quality cleanli-ness grading moisture content and other properties is expected Close to half of the coarse aggregates used in portland cement concrete in North America are gravels

Jun 17 2015· Steel Slag aggregate for Road Construction Projects COMPARITIVE STUDY ON CONCRETE USING STEEL SLAG AS FINE AGGREGATE WITH CONVENTIONAL CONCRETE - …

• Aggregate is a term for any particulate material It includes gravel crushed stone sand slag recycled concrete and geosynthetic aggregates Aggregate may be natural manufactured or recycled • Aggregates make up some 60 -80 of the concrete mix They provide compressive strength and bulk to concrete

Cement is so fine that 1 pound of cement contains 150 billion grains The cement is now ready for transport to ready-mix concrete companies to be used in a variety of construction projects Although the dry process is the most modern and popular way to manufacture cement some kilns in the United States use a wet process

With pumiced or pelletized slag it is possible to make lightweight aggregate for concrete Concrete made from blast furnace slag cement with a high proportion of granulated blast furnace slag ensures the stability and durability of the telecommunications tower in Düsseldorf

Concrete made with slag cement provides higher compressive and flexural strengths compared with portland cement concrete SCIC 14 Compressive and Flexural Strength examines the factors that effect concrete strength and explains how slag cement improves both compressive and flexural strength of concrete

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 The All-Purpose Aggregate Slag is sometimes erroneously classified as industrial waste In fact this product can be recycled into valuable versatile construction materials for green use We utilize slag a product of steelmaking in versatile construction material for environmentally beneficial use

study has been conducted to explore the possibility of utilization of steel slag in concrete as coarse aggregate After collection of steel slag aggregate from a local steel manufacturing company the steel slag aggregate was separated into lightweight SL heavyweight SH and mixed SM slag aggregates The

Aug 01 2019· Aggregate Definition granular material such as sand gravel crushed stone crushed hydraulic-cement concrete or iron blast-furnace slag used with a cementing medium to produce either concrete or mortar -

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

This report presents available information regarding the use of air-cooled blast furnace slag ACBFS as coarse aggregate in concrete pavements The report discusses ACBFS aggregate production and properties and the properties of concrete produced with ACBFS coarse aggregate Both the …

In this study the use of steel slag as fine and or coarse aggregate in concrete is investigated For this purpose 12 different concrete mixtures with different water cement ratios of 0 40 0 55 and 0 70 which include steel slag aggregate as fine and or coarse aggregate are prepared

withcinder pumice expanded-slag orexpandedburned-shaleaggregates As concrete masonry units made with lightweight aggregates are used extensively …

Other uses Include skid resistant asphalt aggregate rail ballast asphaltic concrete aggregate soil conditioner hard stand areas and unconfined construction fill Electric Arc Furnace Slag EAF or steel furnace slag Produced when scrap metal and fluxes are oxidized by the use of an electric current Molten slag is generally placed into

Concrete made with EAF oxidizing slag as an aggregate shows good physical and mechanical properties and further study of its durability will ensure greater reliability in its usage This paper details a systematic study of slag concrete behaviour under severe test conditions

to ascertain the properties of concrete prepared with steel slag aggregate after the exposure to high temperatures Four concrete mixtures made from steel slag aggregate from a Croatian steel plant 1 INTRODUCTION Due to demand for reducing overexploitation of the natural quarries the …

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

concrete made from slag aggregate - macimpianti concrete made by steel slag aggregates The following size of slag available from JSW Steel Ltd 0-4mm 4-12mm 12-20mm 20-40mm and above 40mmCrushed granite aggregate Get Price And Support Online Steel Slag Aggregate Used in Portland Cement slag as an aggregate in concrete for paving applications

Fine and coarse aggregates make up the bulk of a concrete mixture Sand natural gravel and crushed stone are used mainly for this purpose Recycled aggregates from construction demolition and excavation waste are increasingly used as partial replacements for natural aggregates while a number of manufactured aggregates including air-cooled blast furnace slag and bottom ash are also

blast furnace slag as the coarse aggregate exhibits flexure strength equivalent to and compressive strength up to 10 greater than Portland Cement Concrete made with natural aggregates blast furnace slag concrete mix designs Pavement Designs Air Entrained Sks CY 4 4 5 5 5 5 6 6 5 7 7 5 Portland Cement 244 275 306 336 367 397 428 458

Abrasive blastingIt s also possible to expose the aggregate after the concrete has set and hardened by using abrasive blasting either sandblasting or shotblasting The disadvantage of abrasive blasting is that it can fracture the aggregate and dull its appearance

In modern concrete a variety of materials help make up aggregates including sand and various sizes of gravel and crushed stone Aggregates are divided into two categories based on particle size fine aggregate which is 0 2 inches 5 millimeters or smaller and coarse aggregate as large as 1 5 inches 38 1 millimeters

Nov 19 2008· The two byproducts differ in availability and characteristics Slag which is left over in blast furnaces when steel is made can make up more of the concrete …

Slag cement proportions of 40 to 50 normally optimize strength Concretes made with slag cement will generally exhibit higher flexural strength for a given level of compressive strength Modulus of elasticity follows the same relationship as OPC concrete when based on compressive strength

The compressive strength of concrete made with 50 and 100 steel slag aggregates are about 50 and 70 respectively higher than the concrete made with 100 first class brick aggregate View Show

was to evaluate the durability of concrete made with steel slag aggregates This research has shown that replacing some percentage of natural aggregates by steel slag aggregates causes negligible degradation in strength It is shown that as the amount of steel slag is increased beyond 75 the workability of the concrete mixture became an important

Jan 10 2014· Due to its positive technical characteristics LD slag is used all over the world in road and railway construction and for engineering 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

Steel slag aggregate SSA is a byproduct of the production of steel in an electric arc furnace The high iron oxide content of the aggregate results in an aggregate that is very hard and very dense SSA is 20-30 heavier than naturally occurring aggregates such as basalt and granite

Data from Table XI Slag Concrete Masonry Units National Slag Association Fire Resistance and Thermal Insulation The concrete masonry units made with slag aggregates have low thermal conductivities As a result the slag units have better insulating properties and fire resistance for a given thickness of solid material in a wall than