3 compressive strength of steel slag …€¦ · steel slag is industrial waste resulting from...

International Journal of Civil Engineering and Technology (IJCIET), ISSN 0976 – 6308 (Print),

ISSN 0976 – 6316(Online), Volume 6, Issue 2, February (2015), pp. 16-21 © IAEME

16

COMPRESSIVE STRENGTH OF STEEL SLAG

AGGREGATE AND ARTIFICIAL SAND IN CONCRETE

Prof. Mrs. A. I. Tamboli

ME Structure, Sinhgad Academy of Engineering, Kondhwa (Bk),Pune-48

1Shelar Nilesh B.,

2Nimse Ajinkya S.,

3Chile Nilesh N.,

4Patil Swapnil S.,

5Suryawanshi Vyankatesh C.

1,2,3,4,5Sinhgad Academy of Engineering Civil Engineering Dept.

ABSTRACT

Steel slag is a byproduct of steel making processes of steel industry. It’s also one of the

biggest industrial waste which is being produced worldwide in a huge quantity. This research deals

with substantial replacement of natural aggregates and natural sand used in concrete. In this study

coarse aggregate were partially replaced with steel slag aggregate with different replacement

percentage in concrete i.e. 0%, 10%, 20%, and 30%. In which we found compressive strength of

concrete with various percentage of steel slag aggregate. We found a significant increase in

compressive strength at 20% aggregate replacement. We got an increase in compressive strength by

1.1 times than that of our convectional concrete.

Decreasing sand resources are posing environmental problems and hence government

restrictions on sand quarrying are put under action which resulted in scarcity and significant

increasing in its cost. So there is a great need to find an alternate to natural sand. So now a day’s

artificial sand is being used in wide range of work. We had also used artificial sand in our concrete

as an application to green engineering concept.

Key words: steel slag aggregate, artificial sand, OPC, compressive strength, coarse aggregate.

INTRODUCTION

Conventionally concrete is mixture of cement, sand and aggregate. Properties of aggregate

affect the durability and performance of concrete, so aggregate is an essential component of

concrete. Fine and coarse aggregate constitute about 75% of total volume. It is therefore, important

INTERNATIONAL JOURNAL OF CIVIL ENGINEERING AND

TECHNOLOGY (IJCIET)

ISSN 0976 – 6308 (Print)

ISSN 0976 – 6316(Online)

Volume 6, Issue 2, February (2015), pp. 16-21

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to use right type and good quality aggregate in concrete, because the aggregates the main matrix of

concrete. Now days aggregate are obtained from natural rocks which is decreases day to day.

Therefore it becomes more necessary to find suitable sustainable alternative source to natural

aggregates for preparing concrete.

STEEL SLAG

At present many steel plant are being set up across the world causes a huge production of

solid waste material like slag. Presently, total steel production in India is about 72.20 million metric

tones and the waste generated annually is around 19 million metric tones and 50 million metric tones

worldwide. . However, steel slag and slag has not been used efficiently and thoroughly for long,

which causes its great accumulation, waste of land, and serious air and water pollution. Steel slag

contains a certain amount of important minerals of cement clinker, such as C2S and C3S.So it can be

used as cement and concrete admixtures.

Steel slag is industrial waste resulting from steel refining plants in conversion process. There

are two methods for steel slag production: Basic Oxygen Steel (BOS) and Electric Arc Furnace

(EAF). BOS slag is obtained by blowing high pressure oxygen into a vessel containing molten iron,

steel scrap and lime and EAF utilizes high voltage current to generate heat for doing the same

process. The main utilization of BOF slag is as aggregate in road construction because of its suitable

characteristics. In Europe about 65% of the produced steel slag is used as aggregate in road

construction specially, as a substitute for high-quality natural aggregate in asphalt wearing courses.

In china 40% of BOF slag production is used in BOF slag cement. Owing to the large

production, the research work for last 30 years have shown that 65%of steel slag used today is for

qualified field application. But remaining 35% of slag is still dumped. There are also few researches

that have been performed regarding the utilization of steel slag in concrete as aggregate. This shows

that it is advantageous to increase physical, chemical and mechanical properties of concrete.

ARTIFICIAL SAND

The global consumption of natural sand is very high, due to the extensive use of concrete or

mortar. In developing countries, the demand of natural sand is quite high to fulfill the rapid

infrastructure growth, in this situation developing country like India facing the problems of shortage

of good quality natural sand. In India, natural sand resources are being limited. Increasing extraction

of natural sand from river beds causing many problems, loosing water retaining sand strata,

deepening of the river courses and causing bank slides, loss of vegetation on the bank of rivers,

exposing the intake well of water supply schemes, disturbs the aquatic life as well as affecting

agriculture due to lowering the underground water table etc . Therefore an alternative to river sand

has become a necessity.

The cheapest and easiest alternative to natural sand is manufacturing sand by crushing

rocks/stones in desired size and grade by suitable method. Sand produced by such means is known as

manufactured/ crusher/artificial sand. Also such sand increases the physical and mechanical

properties of concrete.

This paper presents the results of experimental investigation of full replacement of natural

sand by artificial sand.



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Table 1: MATERIAL PROPERTIES INVESTIGATE

1 Nominal Max. Size Of Coarse Aggregate 20 mm

2 Slump Range 50-75 mm

3 Fineness Modulus Of Fine Aggregate 2.88 (ZONE II)

4 Fineness Modulus Of Coarse Aggregate 5.12 (ZONEII)

5 Specific Gravity Of Fine Aggregate 2.65

6 Specific Gravity Of Coarse Aggregate 2.75

7 Specific Gravity Of Steel Slag Aggregate 2.67

8 Specific Gravity Of cement 3.15

9 Water Absorption Of Fine Aggregate 4.7%

10 Water Absorption Of Coarse Aggregate 1.65%

11 Water Absorption Of Steel Slag 4.6%

Table 2: CHEMICAL PROPERTIES OF STEEL SLAG

Table 3: PHYSICAL PROPERTIES OF STEEL SLAG

EXPERIMENTAL PROGRAM

Materials used in this study were OPC 53 grade cement confirming to IS 8112 and fine

aggregate & coarse aggregate confirming to IS 383-1970. The cement and aggregate were tested to

fulfill the IS requirement.

Concrete mix were designed in accordance with IS 10262-1982 and IS 456-2000 by

assuming good degree of quality control and moderate exposure conditions. The concrete mix is

designed for M20 grade with 100% replacement of natural sand by artificial sand and partial

replacement of coarse aggregate by steel slag with 0% 10% 20% 30%. The adopted mixes

proportions by weight batching method are summarized in Table:

Constituent

PERCENTAGE%

Mean Range

Calcium Oxide (CaO) 39 34-43

Silicon Dioxide (SiO2) 36 27-38

Aluminum Oxide (Al2O3) 10 7-12

Magnesium Oxide (MgO) 12 7-15

Iron (FeO or Fe2O3) 0.5 0.2-1.6

Manganese Oxide (MnO) 0.44 0.15-0.76

Sulfur (S) 1.4 1.0-1.9

Physical Properties Steel Slag

Colour Black

Specific gravity 2.67

Appearance Crystalline

Compacted Unit Weight

(kN/m3)

10.98-13.34

Absorption (%) 4.6%of total weight



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Table 4: Concrete Mix Proportion: (kg/m3)

The exact amount of concrete ingredients were weighed and mixed thoroughly in laboratory

till the consistent mix was achieved. The workability of fresh concrete was measured in terms of

slump value.

The standard cubes of 150x150x150 mm size were cast in steel moulds and compacted. The

specimens were cured in water for 28 days by immersion and tested immediately. The 12 cube

specimens were tested for determining the compressive strength.

TEST CONDUCTED

Compression Testing Machine (CTM) was used to carrying test on hardened concrete. Test

was carried out for finding the compressive strength. A standard test procedure is followed for each

test and strength performance of hardened concrete is studied.

COMPRESSION STRENGTH

Totally 12 concrete cubes of 150x150x150 mm size were casted and it is allowed for 28 days

curing. After drying, cubes were tested in Compression Testing Machine (CTM) to determine the

ultimate load.

The compressive strength calculated by formula fcu = P/A

Where, fcu = compressive strength of cube, MPa or N/mm2

P = compressive load at failure, N

A = area of loading, mm2

Fig.1: Test arrangement for compressive test

SR.NO. WATER CEMENT F.A C.A

1. 191.58 383.16 556.59 1256.04

2. 0.5 1 1.45 3.27

International Journal of Civil Engineering and Technology (IJCIET), ISSN 0976

ISSN 0976 – 6316(Online), Volume 6, Issue 2, February (2015), pp.

Compressive Strength (N/Mm

TEST RESULTS AND DISCUSSION

Test results shows that the compressive strength of the concrete increases and the optimum

value was found at a slag replacement proportion of 20% for coarse aggre

further replacement of slag decreases the compressive strength.

strength of 1.1 times than that of our convectional concrete.

Sr. NO % steel slag

1 00

2 10

3 20

4 30

0

10

20

30

40

0%

International Journal of Civil Engineering and Technology (IJCIET), ISSN 0976

6316(Online), Volume 6, Issue 2, February (2015), pp. 16-21 © IAEME

20

Fig.2: Compressive test

Table 5: Compressive strength

Compressive Strength (N/Mm2) V/S Replacement Percentage of Steel Slag

TEST RESULTS AND DISCUSSION

results shows that the compressive strength of the concrete increases and the optimum

value was found at a slag replacement proportion of 20% for coarse aggregate and after that any

replacement of slag decreases the compressive strength. We got an increase in compressive

strength of 1.1 times than that of our convectional concrete.

% steel slag Compressive strength in 28 days (N/mm

29.96

30.44

32.13

26.09

10% 20% 30%


© IAEME

f Steel Slag

results shows that the compressive strength of the concrete increases and the optimum

gate and after that any

increase in compressive

days (N/mm2)

28 Day's



21

CONCLUSION

From above research work we are concluded that,

1. We got an increase in compressive strength at 20% of replacement ratio with 100% of

replacement of natural sand with artificial sand in concrete.

2. The enhancement in compressive strength was observed to be 1.1 times than that of our

convectional concrete at 28 days of curing.

3. Such type of combination can be used in our construction as its giving good strength and also

supports green engineering concept.

ACKNOWLEDGEMENTS

The authors wish to thank the Management, Principal, Head of Civil Engineering Department

and staff of Sinhgad Academy of Engineering College, Pune and Authorities of Savitribai Phule

Pune University for their support. The authors express their deep and sincere thanks to Mrs.

Amena.I.Tamboli(Department of Civil Engineering, SAE Pune) for her tremendous support and

valuable guidance from time to time.

REFERENCES

1. H.Beshr, A.A.Almusallam, M.Maslehuddin-,(2003) "Effect of Coarse Aggregates Quality on the

Mechanical Properties of High Strength Concrete" - Construction and Building Materials 2003.

2. Ibrahim M. Asi, HishamY.Qasrawi, and Faisal L.Shalabi.(2007) Use of steel slag aggregates in

asphalt concrete mixes.

3. ASTM C 33. (2003). Standard Specification for Concrete Aggregates. ASTM International.

4. National Slag Association, (2003) "Iron and Steel making Slag Environmentally Responsible

Construction Aggregates".--NSA Technical Bulletin may 2003. http://www.nationalsl

ag.org/steelslag.htm

5. M Maslehuddin, M Shameem and N U Khan, (1999) "Performance of Steel Slag Aggregates

Concrete", Exploiting Wastes in Concrete --Proceedings of the International Seminar held at the

University of Dundee, Scotland, UK Sept 1999.

6. National Slag Association, MF186-1 Steel slag utilization in asphalt mixes by John Emery VP,

Trow Ltd. consulting engineers. Taken from Canadian Technical Asphalt Association

Proceedings, 1984

7. Juan M Manso, Juan A Polanco, Milagros Losanez and Javier J Gonzalez, (2006) “Durability of

Concrete made with EAF Slag as Aggregates "Cement and Concrete Composite 2006.

8. P. Kumar Mehta, (1999) "Advancements in Concrete Technology. Concrete International June

1999.

9. Riyaz Khan and Prof.S.B.Shinde, “Effect Of Unprocessed Steel Slag on The Strength of Concrete

When Used as Fine Aggregate” International Journal of Civil Engineering & Technology

(IJCIET), Volume 4, Issue 2, 2013, pp. 231 - 239, ISSN Print: 0976 – 6308, ISSN Online: 0976 –

6316.

10. Amena.I.Tamboli and Dr. S.B. Shinde, “Partial Replacement of Cement with Unprocessed Steel

Slag In Concrete” International Journal of Civil Engineering & Technology (IJCIET), Volume 4,

Issue 5, 2013, pp. 55 - 60, ISSN Print: 0976 – 6308, ISSN Online: 0976 – 6316.

11. Syed Muqueet Ali and Prof. D.N.Kakde, “Partially Process Steel Slag Used as Cement

Replacement in Self Compacting Concrete (S.C.C)” International Journal of Civil Engineering &

Technology (IJCIET), Volume 5, Issue 9, 2014, pp. 156 - 161, ISSN Print: 0976 – 6308, ISSN

Online: 0976 – 6316.

3 compressive strength of steel slag …€¦ · steel slag is industrial waste resulting from...

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