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Concrete is the third largest material consumed byhuman beings after food and water.Environment of this only living planet is wary of

pollution due to emissions of a host of greenhouse gases from industrial processes.Due to demand for reducing overexploitation ofthe natural quarries, the use of the by-productsfrom different industries has become anincreasing practice in the sustainable constructionindustry.

ABSTRACT

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Steel slag concrete mixes have very highstabilities and satisfactory flows andexcellent stripping resistance.Steel slag used as surface course has goodwear and skid resistance.

Steel slag mixes have good heat retentionand compatibility.When in contact with moisture, steel slag hasa potentially expansive nature up to 10%

attributed to the hydration of the free Caoand magnesium hydrates.

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GENERAL SCHEMATIC VIEW OF BLASTFURNACE OPERATION AND SLAG

PRODUCTION

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LITERATURES REVIEWUSE OF FURNACE SLAG AND WELDING SLAGAS REPLACEMENT FOR SAND IN CONCRETE

Sreekrishnaperumal Thanga Ramesh*

In this project, a study was made to obtain low cost building

materials using industrial wastes (welding and furnace slags).Different fine aggregate replacements have been studied bysubstituting 5%, 10%, and 15% of slag.Experimental studies were conducted only on plain cement concrete.

The preliminary studies were conducted by mixing the slag with thecement concrete cubes of standard sizes.The optimum compressive strength of concretes after 28 days has

been found to be 41 N/mm2 for 5% welding slag and 39.7 N/mm2for 10% furnace slag replacements.

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2.CONCRETE CONTAINING STEEL SLAGAGGREGATE: PERFORMANCE AFTER HIGHTEMPERATURE EXPOSURENetinger : Faculty of Civil Engineering, Josip Juraj Strossmayer University of Osijek,Osijek, Croatia.

Due to demand for reducing overexploitation of the natural quarries,the use of the by-products from different industries has become anincreasing practice in the sustainable construction industry .Steelmaking slags are composed principally of calcium silicates,

calcium aluminof- errites, and fused calcium oxides, iron,magnesium, and manganese.Organic, semi-volatile and volatile compounds are not present in thesteel slag due to the fact that they are made at high temperaturesdur- ing production process.Steel slag is generated as a melt at about 1600 C during steelmakingfrom hot metal in the amount of 15% 20% per equivalent unit ofsteel.The function of this slag is to refine the steel of sulphur and toabsorb the oxides formed as a result of deoxidation during steel

production.

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3.STUDY ON THE PARTIAL REPLACEMENT OF FINEAGGREGATE USING INDUCTION FURNACE SLAGAnsu John and Elson John

Department of Civil Engineering, Mar Athanasius College of Engineering, Kothamangalam,India.

In this study the compressive strength characteristics of mortar andconcrete made with partial replacement of fine aggregate usinginduction furnace slag was considered .

The aggregates occupy almost 70-75 percent of the total volume ofconcrete.The civil engineering construction particularly in the field ofreinforced concrete has increased and as a consequence theavailability of aggregate has reduced by a large amount, which hasled to hike in its cost.To meet the global demand of concrete in the future, it is becominga challenging task to find suitable alternative construction materialswhich can fully or partially replace the natural aggregate withoutaffecting the property of concrete.

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METHODOLOGYMaterial Collection

Study of property

Mix Design(M30)

Casting of Specimen withvarious mix proportion

25%, 50%, 75%

Mechanical properties ofvarious mix

Comparison ofresult

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TEST ON MATERIALS1.Test on cement

Specific gravity of cement =3.152.Test on coarse aggregate Specific gravity of coarse aggregate =2.70

Water absorption of coarse aggregate =2.6%3.Test on fine aggregate Specific gravity of fine aggregate =2.68

Water absorption of fine aggregate =2.5%4.Test on steel slag Specific gravity =3.2-3.6

Water absorption =up to 3%

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MIX PROPORTIONS FOR ONE CUM OFCONCRETE

1.Mass of Cement : 415 kg/m 3 2.Mass of Water : 186 lit/m 3 3.Mass of Fine Aggregate : 750 kg/m 3 4.Mass of Coarse Aggregate : 1125 kg/m 3 5.Water Cement Ratio : 0.45

CEMENT F.A C.A WATERCEMENT

RATIO

1 1.80 2.7 0.45

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CALCULATION Comparison of Compressive strength

% of Steel slag

AverageCompressive

Strength(N/mm 2) at

7 days

AverageCompressive

Strength(N/mm 2) at

14 days

AverageCompressive

Strength(N/mm 2) at

28 days

0% 10.43 20.36 31.25

25% 9.77 19.70 30.22

50% 7.70 15.40 24.73

75% 4.59 10.95 19.84

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COMPRESSIVE STRENGTH AT 14 DAYS

20.3619.7

15.4

10.95

0

5

10

15

20

25

C.C SSC 25% SSC 50% SSC 75%

C o m p r e s s

i v e s t r e n g

t h N / m m

2 @

1 4 d a y s

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CALCULATION Comparison of Split tensile strength

% of Steel slag

Average SplitTensile

Strength(N/mm 2) at

7 days

Average Splittensile

Strength(N/mm 2) at

14 days

Average Splittensile

Strength(N/mm 2) at

28 days

0% 2.30 3.95 5.60

25% 2.26 3.67 5.37

50% 1.69 3.06 4.57

75% 1.27 2.40 3.91

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SPLIT TENSILE STRENGTH AT 7 DAYS

2.302.26

1.69

1.27

0

0.5

1

1.5

2

2.5

C.C SSC 25% SSC 50% SSC 75%

S p l i t t e n s

i l e s t r e n g

t h N / m

m 2 @

7 d a y s

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SPLIT TENSILE STRENGTH AT 14 DAYS

3.953.67

3.06

2.4

0

0.5

1

1.5

2

2.5

3

3.5

4

4.5

C.C SSC 25% SSC 50% SSC 75%

S p l i t t e n s

i l e s t r e n g

t h N / m m

2 @

1 4 d a y s

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CURING OF SPECIMEN

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CASTED SPECIMENS FOR TESTING

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TESTING OF SPECIMEN

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