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The slag produced in the steel industries is a by-product.How to cite lpez-daz, a., ochoa- daz, r.And grimaldo -len, g., use of bof slag and blast furnace dust in asphalt concrete an alternative for the construction of pavements.Dyna, 85206, pp.24-30, september, 2018.In the manufacture of steel.Three types of slag are known.
Generated during melting of scrap and sponge in blast furnace, it is rich in carbon and zinc.Ground granulated blast furnace slag ggbfs can be used as a mineral admixture in cement.Also, furnace slag can be used as coarse aggregate for making concrete as well as aggregate in asphalt paving roads dieu and lunagaira 2015.
The efficiency, which the molten blast furnace slag is rapidly chilled, as well as the chemical composition of the slag source, largely determines its cementitious properties for use in concrete.After the granulated blast furnace slag is formed, it must be dewatered, dried and ground, using processes similar to those used with portland cement.
Of utilizing the blast furnace slag as a replacement for natural aggregate in the concrete.B the original scope of this research is to investigate the properties of concrete with blast furnace slag aggregates.C to study the effect on compressive strength, and the flexural strength of concrete with blast furnace slag.
Air-cooled blast-furnace slag the material resulting from the solidification of molten blast-furnace slag under atmospheric conditions.Subsequent cooling may be accelerated by application of water to the solidified surface.This material can be mined and crushed for use as aggregate in concrete or fill materi- al, but is not cementitious.
Slag powder and blast furnace slag so the recycling of steel slag can bring enormous benefits and environ-mental benefit to whole society.9 6.Ground granulated blast furnace slag is commonly used in combination with portland cement in concrete for many applications10,11 7.The heat of hydration is dependent on the portland.
Various effects of blast furnace slag in concrete production are reiterated by kim et al.2016 in which as the replacement rate of blast-furnace slag aggregates increased, the void ratio increased.This phenomenon occurs because the void ratio of blast-furnace slag aggregates is greater than that of natural aggregates.
Air-cooled slag.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.
This study is a part of an on-going research studying the effect of blast furnace slag as a binder and filler replacement on the properties of fresh and hardened foam concrete.A mix having the density of 1300kgm3 with a proportion of 1 cement2 sand, wc ratio of 0.45, a commercially available additive sp-1, class f fly ash and a unprocessed blast furnace slag was used.
A brief review on blast-furnace slag and copper slag as fine aggregate in mortar and concrete based on portland cement alaa m.Rashad building materials research and quality control institute, housing building national research center, hbrc, cairo, egypt received september 16, 2015 abstract.
After extraction from other construction and demolition waste then sieved used as a constituent for natural coarse aggregates cas in concrete.In this study broken mangalore tiles as coarse aggregate in addition with iron ore slag in the production of low to medium strength concrete is carried out.Experimental investigation objective.
Blast furnace slag - material description origin in the production of iron, iron ore, iron scrap, and fluxes limestone andor dolomite are charged into a blast furnace along with coke for fuel.The coke is combusted to produce carbon monoxide, which reduces the iron ore to a molten iron product.
Blast furnace slag national slag association.20191128 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.Pics blast furnace slag crushing and screening.
Shrinkage of self-compacting concrete made with blast.Shrinkage of self-compacting concrete made with blast furnace slag as fine aggregate a number of studies have been published on the use of blast furnace slag as aggregate in concrete and some standards, such as astm c33, astm c989, en-206 or en-12620 also provide specifications for using this slag as aggregate.
Mechanical properties of concrete using steel slag aggregate www.Ijeijournal.Com page | 8 1.3 need for optimizing aggregate packing from the production of concrete, cement is the most expensive material and can account for upto 60 of the total materials cost.
The department shall examine the use of electric arc furnace slag for use as an aggregate for new roads and paving projects in high traffic areas and report back.Pavements or other concrete applications due to the expansive nature of the aggregates since.Air-cooled blast furnace slag.
Silicon manganese slag for reclaiming land.Silica magnese slag used in concrete as aggregate silicon manganese slag for reclaiming land know more mentioned the use of slag in cements concrete aggregate flowable utilization of fly ash silica fume and blast furnace slag in various 217 land reclamation and the other trace elements include chromium cobalt manganese etc.
Concrete properties can be improved using fine blast furnace slag bfs.The latter was used to replace cement in concrete at 10, 15, 20, 25, and 30 proportions and properties of both fresh and hardened concrete improved.Best workability evaluated by slump and table tests was recorded at 30 of bfs addition.Vebe-time, an indication of workability of concrete, decreased to its lowest.
This product is usually intended to be used in concrete either as an element of composite cement such as blast furnace cementhigh slag blast furnace cement or as a straight addition to the concrete mix by the concrete producer.Gbfs.Granulated blast furnace slag gbfs can be used like sand as an additional aggregate for building materials.
Converting granulated blast furnace slag into fine aggregate 95 slags can be increased by optimizing granulation parameters such as water temperature and flow rate to produce slag sand similar to river sand.Based on this concept, several trials were conducted at blast furnace slag granulation.