A total of 82 concrete specimens were made with slag aggregate and 52 concrete specimens were made with brick aggregate 0 10 20 30 40 50 60 70 80 90 100 100 101 r sieve opening mm slag and brick aggregate 30 40 50 60 70 80 90 100 1 01 r sylhet sand table 2 mixture proportion of concrete made with slag.
A total of 82 concrete specimens were made with slag aggregate and 52 concrete specimens were made with brick aggregate 0 10 20 30 40 50 60 70 80 90 100 100 101 r sieve opening mm slag and brick aggregate 30 40 50 60 70 80 90 100 1 01 r sylhet sand table 2 mixture proportion of concrete made with slag aggregat.
Actually the unsoundness of concrete made with such aggregate is due to coals expansion on wetting and contraction on drying foamed slag foamed slag is such type of light weight aggregate which is a byproduct of quenching blast furnace slag as produce by the manufacturing of pig iron the foam slag should have the following requireme.
Aggregate and slag cement replacement levels of 0 30 and 50 for a total of 24 different types of concrete in addition one source of opc was studied with both aggregates and all replacement levels at a mixing and curing temperature of 40176f strength tests were conducted at six ag.
Aggregate coarse and fine and cement with that of stainless steel slag on various proportions in concrete 25 50 75 100 the basic objective of this study was to identify alternative source of aggregates and cement and to produce new type of concrete made of stainless steel slag as a green concre.
Anshan jinhengxin commercial and trading coltd aggregates are commonly used in construction work including concrete the aggregates are sourced from rock quarries sand quarries and natural mines we can supply concrete aggregates such as sand gravel stone and crushed rockbriefing of branch company world marine coltd is the branch company of asjhx commercial a.
Apr 06 2020018332the concrete made with posttreatment steel slag was about 17 stronger than concrete made with conventional aggregates and 8 stronger than raw steel sl.
Apr 07 2020018332the concrete made with posttreatment steel slag was about 17 per cent stronger than concrete made with conventional aggregates and eight per cent stronger than raw steel slag water engineer biplob pramanik said the study was the first to investigate potential applications for sewageenhanced slag in construction materi.
Apr 07 2020018332the concrete made with posttreatment steel slag was about 17 stronger than concrete made with conventional aggregates and 8 stronger than raw steel slag water engineer dr biplob pramanik said the study was the first to investigate potential applications for sewageenhanced slag in construction materi.
Apr 16 2020018332the concrete made with posttreatment steel slag was about 17 stronger than concrete made with conventional aggregates and 8 stronger than raw steel slag water engineer dr biplob pramanik said the study was the first to investigate potential applications for sewageenhanced slag in construction materi.
Blast furnace cement pbfc and highslag blastfurnace cement hsbfc with ggbs content ranging typically from 30 to 70 and in the production of readymixed or sitebatched durable concrete concrete made with ggbs cement sets more slowly than concrete made with ordinary portla.
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 45 5 55 6 65 7 75 portland cement 244 275 306 336 367 397 428 4.
Blast furnace slag material description user although blast furnace slag contains a small component of elemental sulfur 1 to 2 percent the leachate tends to be slightly alkaline and does not present a corrosion risk to steel in pilings 10 or to steel embedded in concrete made with blast furnace slag cement or aggregat.
Blast furnace slag peletised slag and granulated slag can be used as an aggregate in concrete replacing primary aggregates in a number of applications mortar ggbs used as a cementitous component in mortars enhances workability and can allow further working time for the bricklay.
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 these ingredients when heated at high temperatures form a rocklike substance that is ground into the fine powder that we commonly think of as ceme.
Concrete in concrete processed steel and blast furnace slag provide a sustainable alternative to primary aggregates in the production of lightweight or dense readymixed concrete blast furnace slag can also be used to make ground granulated blastfurnace slag ggbs which is used as a cement replacement in concre.
Concrete made from slag aggregate macimpianti concrete made by steel slag aggregates the following size of slag available from jsw steel ltd04mm412mm1220mm2040mm 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 applicatio.
Crushed aggregate is produced by crushing quarry rock boulders cobbles or largesize gravel recycled concrete is a viable source of aggregate and has been satisfactorily used in granular subbases soilcement and in new concrete after harvesting aggregate is processed crushed screened and washed to obtain proper cleanliness and gradati.
Ferronickel slag fns is a byproduct of nickel production that is used as an alternative fine aggregate this study evaluates the workability compressive strength splitting tensile strength flexural strength modulus of elasticity and chemical leaching characteristics of concrete containing fns from garnierite o.
Here an attempt is made to replace natural coarse aggregate with slag in production of concrete the strength of the concrete depends on the properties of its constituent materials along with their volumetric fraction water cement ratio admixture added curing methodology and degree of control to find out the optimum volume fraction of sl.
In most concrete aggregates are more or less chemically inert however some aggregates react with the alkali hydroxides in concrete causing expansion and cracking over a period of many years this alkaliaggregate reaction has two forms alkalisilica reaction asr and alkalicarbonate reaction a.
In this study steel slag aggregate processed by several aging process was comparatively satisfied with fundamental properties as concrete aggregate which are specific gravity absorption unit weight percentage of solids and abrasion value etc chemical analysis is also observed to understand the effect of aging process in steel slag aggrega.
Jul 30 2020018332the use of slag in concrete has several benefits including reduced energy reduced greenhouse gas emissions and reduced use of raw materials various types of slag are produced blastfurnace slagthe nonmetallic product consisting essentially of silicates and aluminosilicates of calcium and of other bases that is developed in a molten condition simultaneously with iron in a bla.
Microscope images showing concrete made with treated slag center conventional aggregates left and raw slag right the treated slag forms a more seamless bond with the surrounding ceme.
Oct 01 2015018332electric arc furnace eaf slag is a byproduct of steel production in electric arc furnaces several studies have tried to demonstrate its suitability in civil engineering application such as in bituminous mixtures and cementbased materials due to its good physical chemical and mineralogical properties particularly the reuse as coarse aggregate for concrete production has been shown .
Rmit researchers make 17 stronger concrete with sewageenhanced steel slag15th april 2020researchers at rmit university formerly the royal melbourne institute of technology rmit in australia have discovered that steel slag used to treat wastewater can be recycled as an aggregate material for stronger concre.
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 byproduct of an iron blast furnace molten slag diverted from the iron blast furnace is rapidly chilled producing glassy granules that yie.
Slag cement is a recovered byproduct of the iron manufacturing process and can be used to replace a portion of portland cement in concrete mix design the use of slag cement has demonstrated longterm performance enhancements allowing designers to reduce the environmental footprint of concrete while ensuring improved performance and increas.
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 streng.
Slag in concrete is found stborole etal2016 9 in their paper entitled replacement of fine aggregate by steel slag in this research paper m30 concrete with high volume steel slag replacement for fine aggregate is studied to examine the changes in properties of compressive strength flexur.
Strengths of steel slag aggregate concrete were marginally same as those of the limestone aggregate concrete and water absorption of concrete with steel slag aggregate was somewhat better but no improvement in tensile strengths were observed in this work an attempt is made to study the strength parameters modulus .
The crushing strength of concrete made with 100 steel slag aggregate has gained up to 70 more than the control concrete 100 brick aggregate however the porosity of concrete was reduced wi.
The new concrete mix was made using crushed recycled concrete aggregate for both the coarse aggregate and sand recycled concrete washout water fly ash slag admixtures and only 2 percent cement thats equivalent to 82 pounds of cement in a 3875 pound cubic yard m.
The study was conducted to define and analyse the physical mechanical and durability properties of ecofriendly concrete made with 50 eaf oxidizing slag aggregate in addition to 30 fly ash mix c compared with conventional concrete mix mix a and concrete with 30 f.
The two types of concrete aggregate that are manufactured using iron and steel slag as a raw material and which are covered by jis standards are blast furnace slag aggregate and electric arc furnace oxidizing slag aggregate each of these types includes course aggregate and fine aggrega.
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