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IJRET: International Journal of Research in Engineering and Technology eISSN: 2319-1163 | pISSN: 2321-7308
_______________________________________________________________________________________
Volume: 04 Issue: 07 | July-2015, Available @ http://www.ijret.org 374
CHARACTERIZATION OF MATERIALS BY PARTIALLY
REPLACING CEMENT BY COPPER ORE TAILING AND SAND BY
IRON ORE TAILING
Swetha K S1
, Shashi Kumar N V2
, Bhavya S3
, S.B Anadinni4
1
PG Student, Civil Engineering Department, VVIT, Karnataka, India
2
Professor, Civil Engineering Department, SJCIT, Karnataka, India
3
Professor, Civil Engineering Department, SJCIT, Karnataka, India
4
Principle, VVIT, Karnataka, India
Abstract
The construction industry has been improvising through the advances in innovation and procedure. Concrete, which is the
essential part in development industry, is being utilized more than manmade materials and it expands more crude materials.
Cement, fine aggregate and coarse aggregate are vital ingredients of concrete .An earnest attempt is made through this project to
fulfill all the pre and post factor of M20 concrete by partial replacement of cement by copper ore tailing of 5%, 10%, 15%, 20%,
25% and sand by iron ore tailing of 10%, 20%, 30%, 40%, 50%. The effect of copper ore tailing and iron ore tailing for the
partial replacement of cement and sand on strength and durability characteristics were analyzed and compared with normal
concrete. The test results shows that 15% copper ore tailing and 30% iron ore tailing shows the good and optimized results. Its
use will lead to a reduction in cement and sand quantity required for construction purposes and hence sustainability in the
construction industry.
Keywords: Copper ore tailing, Iron ore tailing.
--------------------------------------------------------------------***------------------------------------------------------------------
1. INTRODUCTION
Concrete is a standout amongst the most critical things
among the building materials in a wide range of structural
designing works. Since the adaptation of concrete as a
building material with lot of researches and studies having
been made to improve the quality strength and durability.
Plain concrete is great in pressure however week in tension
with extremely restricted flexibility & little immunity to
splitting. Concrete leading to brittle fracture because of
propagation of micro cracks and its poor elasticity. To meet
the requests of the advanced world concrete technology is to
be built with quality, strength and durability. The most
important problem facing mankind today is how best to
preserve natural resources to meet human needs and nurture
economic growth without exhausting the resources and
endangering the environmental integral on which life
economic prosperity and our security depend.
Copper Ore Tailing (COT) and Iron Ore Tailing (IOT) are
known to improve both mechanical characteristics and
durability characteristics of concrete since both the chemical
and physical impacts of these are critical. Physical impact of
COT in concrete go about as filler material, as a result of its
fineness can fit into spaces between sand grains in the same
way IOT fills the spaces between particles of coarse
aggregate. Due to the presence of high content of silica
chemical reaction is carried out and it is highly active
pozzolans compared to the cement.
2. MATERIAL
2.1 Copper Ore Tailing
Copper Ore Tailing (COT), the glassy material, produced
during Crushing, Separation, Milling, Floatation having the
specific gravity 3.15 and it is considered as waste and
disposed as landfill. However, it causes severe
environmental pollution due to the generated waste
materials. Copper ore tailings of about 2.2-3 tons are
generated for every ton of copper production in copper
mines. It shows in its chemical composition containing high
contents of aluminum, silica and iron oxide similar to that of
cement.
2.2 Iron Ore Tailing
Iron Ore Tailing is a waste generated from the Iron Ore
industry having specific gravity 3.01. It is a very fine
aggregate residue resulting from the extraction of Iron from
Iron Ore. Problems involved in the disposal of iron ore
tailing are lack of space, technical problems, cost and
environmental hazards. Tests on Iron Ore Tailings procured
from Tumkur site were conducted.
2.3 Cement
Ordinary Portland cement of grade 43 is used in the present
experimental study having specific gravity 3.08.
IJRET: International Journal of Research in Engineering and Technology eISSN: 2319-1163 | pISSN: 2321-7308
_______________________________________________________________________________________
Volume: 04 Issue: 07 | July-2015, Available @ http://www.ijret.org 375
2.4 Coarse Aggregate
The aggregates were obtained from the local quarry free
from lumps of clay, organic and vegetable matters, fine dust
are used in the study having specific gravity 2.56.
2.5 Fine Aggregate
Natural river sand which is locally available has been
selected for the dissertation work having specific gravity
2.4.
3. EXPERIMENTAL INVESTIGATION AND
RESULTS
3.1 Compressive Strength
Compressive strength of concrete mixes prepared with
conventional concrete and replacement of IOT and COT
were experimentally determined at 7, 14 and 28days and
results are tabulated in table in 1.1.
Table 1.1 Compressive Strength in N/mm2
for 7.14.28 days
Sl.
no
% Variation of COT
and IOT
7days 14day
s
28 days
1 CC 18.16 23.83 26.73
2 5%COT & 10%IOT 20.34 24.99 27.89
3 10%COT &
20%IOT
21.51 26.00 28.33
4 15%COT &
30%IOT
23.83 28.33 29.93
5 20%COT &
40%IOT
22.39 24.55 27.89
6 25%COT &50%IOT 19.32 22.08 26.00
It can be seen from the tables that all specimens have
attained compressive strengths higher than the target
strength of 26.65 N/mm2
for M20 mix at the end of 28 days.
Maximum compressive strength is 29.93 N/mm2
for the mix
15%COT and 30%IOT which is the optimum mix.
Pozzolanic nature of copper ore contributes to the strength
development and finer particles in IOT made more bonding
effect to the concrete mix. The slight decrease in the
strength a higher replacement levels may be due to the slow
pozzolanic action.
3.2 Split Tensile Strength
Cylinder Specimen was prepared using design M20 grade of
concrete mix with the use of different replacement material
IOT for sand10% ,20%, 30%, 40% 50% and cement by
COT in 5%, 10%, 15%, 20%, 25% and results are tabulated
in table in 1.2.
Table 1.2 Split Tensile Strength in N/mm2
for 7.14.28 days
Sl.
no
% Variation of COT
and IOT
7days 14 days 28 days
1 CC 1.618 2.217 2.544
2 5%COT & 10%IOT 1.757 2.226 2.681
3 10%COT & 20%IOT 1.896 2.405 2.771
4 15%COT & 30%IOT 2.034 2.544 2.866
5 20%COT & 40%IOT 1.757 2.173 2.544
6 25%COT &50%IOT 1.478 2.034 2.451
Maximum split tensile strength is 2.866 N/mm2
with respect
to conventional concrete, for the mix 15%COT and 30%IOT
which is the optimum mix. Pozzolanic nature of copper ore
contributes to the strength development and finer particles in
IOT made finer and bond effect to increases in strength for
the replacement levels. The slow pozzolanic action might
have affected the strength gain so that the decrease in the
split tensile strength for higher replacement of COT & IOT.
3.3 Flexural Strength
Prism Specimen were prepared using M20 grade of concrete
mix with the use of different replacement levels of IOT and
COT. Prism specimens of size 150x150x700mm were made
with partial replacement IOT for sand10%, 20%, 30%, 40%,
50% and cement by COT in 5%, 10%, 15%, 20%, 25% for
28 and 56 days and results are tabulated in table in 1.3.
Table 1.3 Flexural Strength in N/mm2
for.28 and 56 days
Sl.
no
% Variation of COT
and IOT
28days 56 days
1 CC 3.11 3.63
2 5%COT & 10%IOT 3.29 3.68
3 10%COT & 20%IOT 3.32 3.79
4 15%COT & 30%IOT 3.46 3.92
5 20%COT & 40%IOT 3.28 3.76
6 25%COT &50%IOT 3.19 3.68
Maximum flexural strength obtained for the mix 15% COT
and 30% IOT at 28 days is 3.46 N/mm2
which is And there
after the strength goes reducing but almost the same as that
of conventional concrete. Pozzolanic nature of copper ore
contributes to the strength development and finer particles in
IOT made bonding effect to increase in strength for the
replacement levels.
3.4 Water Absorption
Cube specimens were prepared using M20 grade of concrete
mix and by the use of replacement materials IOT and COT.
Specimens of size 150x150x150mm were casted with partial
replacement IOT for sand 10%, 20%, 30%, 40%, 50% and
cement by COT in 5%, 10%, 15%, 20%, and 25% and
results are tabulated in table in 1.4.
Table 1.4 Water absorption after.28 days
Sl.
no
% Variation of COT
and IOT
% of water absorption
(W2-W1)/W1X100
1 CC 2.98
2 5%COT & 10%IOT 2.82
3 10%COT & 20%IOT 2.70
4 15%COT & 30%IOT 2.43
5 20%COT & 40%IOT 2.35
6 25%COT &50%IOT 2.24
IJRET: International Journal of Research in Engineering and Technology eISSN: 2319-1163 | pISSN: 2321-7308
_______________________________________________________________________________________
Volume: 04 Issue: 07 | July-2015, Available @ http://www.ijret.org 376
The water absorption decreases for partial replacement
compared to the normal concrete. Decrease in water
absorption shows that better durability of concrete as the
replacement levels increases. Pozzolanic action of COT
might have made concrete more uniform and denser IOT
particles prevented much absorption.
3.5 Sorptivity
Cube specimens were prepared using M20 grade of concrete
mix and by the use of replacement materials IOT and COT.
Specimens of size 150x150x150mm were casted with partial
replacement IOT for sand 10%, 20%, 30%, 40%, 50% and
cement by COT in 5%, 10%, 15%, 20%, 25%.Test results
are tabulated in table 1.5.
Table 1.5 Sorptivity after 28 days
Sl.
no
% Variation of COT
and IOT
Sorptivity S=(Q/A)/t{1/2}
in (mm/min{1/2}
)
1 CC 2.98
2 5%COT & 10%IOT 2.82
3 10%COT & 20%IOT 2.70
4 15%COT & 30%IOT 2.43
5 20%COT & 40%IOT 2.35
6 25%COT &50%IOT 2.24
The Sorptivity decreases for partial replacement compared
to the normal concrete. Decrease in sorptivity shows that
better durability of concrete as the replacement levels
increases. Pozzolanic action of COT might have made
concrete more uniform and denser IOT particles prevented
much absorption.
3.6 Acid Resistance
Acid resistance test results are shown in Table 1.6 and cubes
were tested and immersed in Hydro choric acid for 28 days
of curing and results are tabulated in table in 1.6.
Table 1.6 Weight Loss Test
Sl.
no
% Variation of COT
and IOT
% of Weight Loss
(W1-W2)/W1X100
1 CC 2.262
2 5%COT & 10%IOT 2.720
3 10%COT & 20%IOT 3.291
4 15%COT & 30%IOT 4.625
5 20%COT & 40%IOT 5.108
6 25%COT &50%IOT 6.711
The weight loss increases for partial replacement compared
to the normal concrete. Weight loss got increased for
maximum replacement of copper ore tailing and iron ore
tailing when compared with conventional concrete.
Decrease in weight loss because of the reaction between
acid and oxides present in iron ore tailing and copper ore
tailing shows less durability of concrete as the replacement
levels increases.
4. CONCLUSION
[1]. It is feasible to produce cost effective concrete,
possessing acceptable 7, 14 days and 28 days strength by
partial replacement of COT and IOT.
[2]. Workability of concrete decreases with raise in
percentage of substitute COT and IOT as compared to
control mix.
[3]. Compressive strength of concrete for 28 days of curing
with various % replacements of COT and IOT has been
increased and has achieved target strength.
[4]. The compressive strength increased 11.97% for the
optimum mix 15%COT and 30%IOT beyond that strength
decreased, but all replacements achieved target strength.
[5]. The split tensile strength of concrete at 7, 14 and 28days
gradually increases with raise in percentage replacements of
COT and IOT compared to conventional concrete.
[6]. The split tensile strength increased 12% for the optimum
mix 15%COT and 30%IOT beyond that strength decreased,
but all replacements achieved strength comparable to
conventional concrete.
[7]. The Flexural strength of concrete maintains good result
up to 15% COT and 30% IOT which is 11% more than
conventional concrete. Beyond that strength decreased, but
all replacements achieved strength almost the same as
conventional concrete.
[8]. Water absorption rate is decreases with increases in
percentage as compared to control mix, hence it is durable.
[9]. Sorptivity test of concrete mix is made with partially
replacement of COT and IOT was after determined after 28
days .Sorptivity decreases with increasing replacement of
COT and IOT compare to normal concrete mix.
[10]. While testing acid resistance, weight loss was absorbed
to be increased proving this concrete is vulnerable to acid.
REFERENCES
[1] Prahallada M. C, Dr. Shanthappa B.C “Use of copper
ore tailing as an excellent pozzolana in the
preparation of concrete” International journal of
advanced research in engineering applied sciences
vol.3,march 2014.
[2] Ananthayya M.B, Premakumar W.P “Influence of
steel fibers and partial replacement of sand by iron
ore tailings on the compressive and splitting Tensile
strength of concrete” International journal of civil
engineering and technology volume 5, issue 3, march
(2014), pp 117-123.
[3] B N Skanda Kumar, Suhas R ,Santosh uttam shet, J
M “utilization of Iron ore tailing as a replacement to
fine aggregate in cement concrete pavements”
International journal of civil engineering and
technology volume 3, issue 7, July (2014), pp. 369-
375.
[4] T.I Ugarna, S P Ejeh, D Y Amartey “Effect of Iron
ore tailing on the properties of concrete” Civil
Engineering and Environmantal research volume 6,
march (2014), pp.7- 12.
[5] L. Zeghichi, “The effect of replacement of natural’s
aggregates by slag products on the strength of
concrete” Asian journal of civil engineering
IJRET: International Journal of Research in Engineering and Technology eISSN: 2319-1163 | pISSN: 2321-7308
_______________________________________________________________________________________
Volume: 04 Issue: 07 | July-2015, Available @ http://www.ijret.org 377
BIOGRAPHIES
Dr.S.B Anadinni, Principle, VVIT,
Bengaluru
Mrs Bhavya S, Professor, SJCIT,
Chickballapur-562101
Mr Shashi Kumar N V, Professor, SJCIT,
Chickballapur-562101
Ms Swetha K S, PG Student, VVIT,
Bengaluru

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Characterization of materials by partially replacing cement by copper ore tailing and sand by iron ore tailing

  • 1. IJRET: International Journal of Research in Engineering and Technology eISSN: 2319-1163 | pISSN: 2321-7308 _______________________________________________________________________________________ Volume: 04 Issue: 07 | July-2015, Available @ http://www.ijret.org 374 CHARACTERIZATION OF MATERIALS BY PARTIALLY REPLACING CEMENT BY COPPER ORE TAILING AND SAND BY IRON ORE TAILING Swetha K S1 , Shashi Kumar N V2 , Bhavya S3 , S.B Anadinni4 1 PG Student, Civil Engineering Department, VVIT, Karnataka, India 2 Professor, Civil Engineering Department, SJCIT, Karnataka, India 3 Professor, Civil Engineering Department, SJCIT, Karnataka, India 4 Principle, VVIT, Karnataka, India Abstract The construction industry has been improvising through the advances in innovation and procedure. Concrete, which is the essential part in development industry, is being utilized more than manmade materials and it expands more crude materials. Cement, fine aggregate and coarse aggregate are vital ingredients of concrete .An earnest attempt is made through this project to fulfill all the pre and post factor of M20 concrete by partial replacement of cement by copper ore tailing of 5%, 10%, 15%, 20%, 25% and sand by iron ore tailing of 10%, 20%, 30%, 40%, 50%. The effect of copper ore tailing and iron ore tailing for the partial replacement of cement and sand on strength and durability characteristics were analyzed and compared with normal concrete. The test results shows that 15% copper ore tailing and 30% iron ore tailing shows the good and optimized results. Its use will lead to a reduction in cement and sand quantity required for construction purposes and hence sustainability in the construction industry. Keywords: Copper ore tailing, Iron ore tailing. --------------------------------------------------------------------***------------------------------------------------------------------ 1. INTRODUCTION Concrete is a standout amongst the most critical things among the building materials in a wide range of structural designing works. Since the adaptation of concrete as a building material with lot of researches and studies having been made to improve the quality strength and durability. Plain concrete is great in pressure however week in tension with extremely restricted flexibility & little immunity to splitting. Concrete leading to brittle fracture because of propagation of micro cracks and its poor elasticity. To meet the requests of the advanced world concrete technology is to be built with quality, strength and durability. The most important problem facing mankind today is how best to preserve natural resources to meet human needs and nurture economic growth without exhausting the resources and endangering the environmental integral on which life economic prosperity and our security depend. Copper Ore Tailing (COT) and Iron Ore Tailing (IOT) are known to improve both mechanical characteristics and durability characteristics of concrete since both the chemical and physical impacts of these are critical. Physical impact of COT in concrete go about as filler material, as a result of its fineness can fit into spaces between sand grains in the same way IOT fills the spaces between particles of coarse aggregate. Due to the presence of high content of silica chemical reaction is carried out and it is highly active pozzolans compared to the cement. 2. MATERIAL 2.1 Copper Ore Tailing Copper Ore Tailing (COT), the glassy material, produced during Crushing, Separation, Milling, Floatation having the specific gravity 3.15 and it is considered as waste and disposed as landfill. However, it causes severe environmental pollution due to the generated waste materials. Copper ore tailings of about 2.2-3 tons are generated for every ton of copper production in copper mines. It shows in its chemical composition containing high contents of aluminum, silica and iron oxide similar to that of cement. 2.2 Iron Ore Tailing Iron Ore Tailing is a waste generated from the Iron Ore industry having specific gravity 3.01. It is a very fine aggregate residue resulting from the extraction of Iron from Iron Ore. Problems involved in the disposal of iron ore tailing are lack of space, technical problems, cost and environmental hazards. Tests on Iron Ore Tailings procured from Tumkur site were conducted. 2.3 Cement Ordinary Portland cement of grade 43 is used in the present experimental study having specific gravity 3.08.
  • 2. IJRET: International Journal of Research in Engineering and Technology eISSN: 2319-1163 | pISSN: 2321-7308 _______________________________________________________________________________________ Volume: 04 Issue: 07 | July-2015, Available @ http://www.ijret.org 375 2.4 Coarse Aggregate The aggregates were obtained from the local quarry free from lumps of clay, organic and vegetable matters, fine dust are used in the study having specific gravity 2.56. 2.5 Fine Aggregate Natural river sand which is locally available has been selected for the dissertation work having specific gravity 2.4. 3. EXPERIMENTAL INVESTIGATION AND RESULTS 3.1 Compressive Strength Compressive strength of concrete mixes prepared with conventional concrete and replacement of IOT and COT were experimentally determined at 7, 14 and 28days and results are tabulated in table in 1.1. Table 1.1 Compressive Strength in N/mm2 for 7.14.28 days Sl. no % Variation of COT and IOT 7days 14day s 28 days 1 CC 18.16 23.83 26.73 2 5%COT & 10%IOT 20.34 24.99 27.89 3 10%COT & 20%IOT 21.51 26.00 28.33 4 15%COT & 30%IOT 23.83 28.33 29.93 5 20%COT & 40%IOT 22.39 24.55 27.89 6 25%COT &50%IOT 19.32 22.08 26.00 It can be seen from the tables that all specimens have attained compressive strengths higher than the target strength of 26.65 N/mm2 for M20 mix at the end of 28 days. Maximum compressive strength is 29.93 N/mm2 for the mix 15%COT and 30%IOT which is the optimum mix. Pozzolanic nature of copper ore contributes to the strength development and finer particles in IOT made more bonding effect to the concrete mix. The slight decrease in the strength a higher replacement levels may be due to the slow pozzolanic action. 3.2 Split Tensile Strength Cylinder Specimen was prepared using design M20 grade of concrete mix with the use of different replacement material IOT for sand10% ,20%, 30%, 40% 50% and cement by COT in 5%, 10%, 15%, 20%, 25% and results are tabulated in table in 1.2. Table 1.2 Split Tensile Strength in N/mm2 for 7.14.28 days Sl. no % Variation of COT and IOT 7days 14 days 28 days 1 CC 1.618 2.217 2.544 2 5%COT & 10%IOT 1.757 2.226 2.681 3 10%COT & 20%IOT 1.896 2.405 2.771 4 15%COT & 30%IOT 2.034 2.544 2.866 5 20%COT & 40%IOT 1.757 2.173 2.544 6 25%COT &50%IOT 1.478 2.034 2.451 Maximum split tensile strength is 2.866 N/mm2 with respect to conventional concrete, for the mix 15%COT and 30%IOT which is the optimum mix. Pozzolanic nature of copper ore contributes to the strength development and finer particles in IOT made finer and bond effect to increases in strength for the replacement levels. The slow pozzolanic action might have affected the strength gain so that the decrease in the split tensile strength for higher replacement of COT & IOT. 3.3 Flexural Strength Prism Specimen were prepared using M20 grade of concrete mix with the use of different replacement levels of IOT and COT. Prism specimens of size 150x150x700mm were made with partial replacement IOT for sand10%, 20%, 30%, 40%, 50% and cement by COT in 5%, 10%, 15%, 20%, 25% for 28 and 56 days and results are tabulated in table in 1.3. Table 1.3 Flexural Strength in N/mm2 for.28 and 56 days Sl. no % Variation of COT and IOT 28days 56 days 1 CC 3.11 3.63 2 5%COT & 10%IOT 3.29 3.68 3 10%COT & 20%IOT 3.32 3.79 4 15%COT & 30%IOT 3.46 3.92 5 20%COT & 40%IOT 3.28 3.76 6 25%COT &50%IOT 3.19 3.68 Maximum flexural strength obtained for the mix 15% COT and 30% IOT at 28 days is 3.46 N/mm2 which is And there after the strength goes reducing but almost the same as that of conventional concrete. Pozzolanic nature of copper ore contributes to the strength development and finer particles in IOT made bonding effect to increase in strength for the replacement levels. 3.4 Water Absorption Cube specimens were prepared using M20 grade of concrete mix and by the use of replacement materials IOT and COT. Specimens of size 150x150x150mm were casted with partial replacement IOT for sand 10%, 20%, 30%, 40%, 50% and cement by COT in 5%, 10%, 15%, 20%, and 25% and results are tabulated in table in 1.4. Table 1.4 Water absorption after.28 days Sl. no % Variation of COT and IOT % of water absorption (W2-W1)/W1X100 1 CC 2.98 2 5%COT & 10%IOT 2.82 3 10%COT & 20%IOT 2.70 4 15%COT & 30%IOT 2.43 5 20%COT & 40%IOT 2.35 6 25%COT &50%IOT 2.24
  • 3. IJRET: International Journal of Research in Engineering and Technology eISSN: 2319-1163 | pISSN: 2321-7308 _______________________________________________________________________________________ Volume: 04 Issue: 07 | July-2015, Available @ http://www.ijret.org 376 The water absorption decreases for partial replacement compared to the normal concrete. Decrease in water absorption shows that better durability of concrete as the replacement levels increases. Pozzolanic action of COT might have made concrete more uniform and denser IOT particles prevented much absorption. 3.5 Sorptivity Cube specimens were prepared using M20 grade of concrete mix and by the use of replacement materials IOT and COT. Specimens of size 150x150x150mm were casted with partial replacement IOT for sand 10%, 20%, 30%, 40%, 50% and cement by COT in 5%, 10%, 15%, 20%, 25%.Test results are tabulated in table 1.5. Table 1.5 Sorptivity after 28 days Sl. no % Variation of COT and IOT Sorptivity S=(Q/A)/t{1/2} in (mm/min{1/2} ) 1 CC 2.98 2 5%COT & 10%IOT 2.82 3 10%COT & 20%IOT 2.70 4 15%COT & 30%IOT 2.43 5 20%COT & 40%IOT 2.35 6 25%COT &50%IOT 2.24 The Sorptivity decreases for partial replacement compared to the normal concrete. Decrease in sorptivity shows that better durability of concrete as the replacement levels increases. Pozzolanic action of COT might have made concrete more uniform and denser IOT particles prevented much absorption. 3.6 Acid Resistance Acid resistance test results are shown in Table 1.6 and cubes were tested and immersed in Hydro choric acid for 28 days of curing and results are tabulated in table in 1.6. Table 1.6 Weight Loss Test Sl. no % Variation of COT and IOT % of Weight Loss (W1-W2)/W1X100 1 CC 2.262 2 5%COT & 10%IOT 2.720 3 10%COT & 20%IOT 3.291 4 15%COT & 30%IOT 4.625 5 20%COT & 40%IOT 5.108 6 25%COT &50%IOT 6.711 The weight loss increases for partial replacement compared to the normal concrete. Weight loss got increased for maximum replacement of copper ore tailing and iron ore tailing when compared with conventional concrete. Decrease in weight loss because of the reaction between acid and oxides present in iron ore tailing and copper ore tailing shows less durability of concrete as the replacement levels increases. 4. CONCLUSION [1]. It is feasible to produce cost effective concrete, possessing acceptable 7, 14 days and 28 days strength by partial replacement of COT and IOT. [2]. Workability of concrete decreases with raise in percentage of substitute COT and IOT as compared to control mix. [3]. Compressive strength of concrete for 28 days of curing with various % replacements of COT and IOT has been increased and has achieved target strength. [4]. The compressive strength increased 11.97% for the optimum mix 15%COT and 30%IOT beyond that strength decreased, but all replacements achieved target strength. [5]. The split tensile strength of concrete at 7, 14 and 28days gradually increases with raise in percentage replacements of COT and IOT compared to conventional concrete. [6]. The split tensile strength increased 12% for the optimum mix 15%COT and 30%IOT beyond that strength decreased, but all replacements achieved strength comparable to conventional concrete. [7]. The Flexural strength of concrete maintains good result up to 15% COT and 30% IOT which is 11% more than conventional concrete. Beyond that strength decreased, but all replacements achieved strength almost the same as conventional concrete. [8]. Water absorption rate is decreases with increases in percentage as compared to control mix, hence it is durable. [9]. Sorptivity test of concrete mix is made with partially replacement of COT and IOT was after determined after 28 days .Sorptivity decreases with increasing replacement of COT and IOT compare to normal concrete mix. [10]. While testing acid resistance, weight loss was absorbed to be increased proving this concrete is vulnerable to acid. REFERENCES [1] Prahallada M. C, Dr. Shanthappa B.C “Use of copper ore tailing as an excellent pozzolana in the preparation of concrete” International journal of advanced research in engineering applied sciences vol.3,march 2014. [2] Ananthayya M.B, Premakumar W.P “Influence of steel fibers and partial replacement of sand by iron ore tailings on the compressive and splitting Tensile strength of concrete” International journal of civil engineering and technology volume 5, issue 3, march (2014), pp 117-123. [3] B N Skanda Kumar, Suhas R ,Santosh uttam shet, J M “utilization of Iron ore tailing as a replacement to fine aggregate in cement concrete pavements” International journal of civil engineering and technology volume 3, issue 7, July (2014), pp. 369- 375. [4] T.I Ugarna, S P Ejeh, D Y Amartey “Effect of Iron ore tailing on the properties of concrete” Civil Engineering and Environmantal research volume 6, march (2014), pp.7- 12. [5] L. Zeghichi, “The effect of replacement of natural’s aggregates by slag products on the strength of concrete” Asian journal of civil engineering
  • 4. IJRET: International Journal of Research in Engineering and Technology eISSN: 2319-1163 | pISSN: 2321-7308 _______________________________________________________________________________________ Volume: 04 Issue: 07 | July-2015, Available @ http://www.ijret.org 377 BIOGRAPHIES Dr.S.B Anadinni, Principle, VVIT, Bengaluru Mrs Bhavya S, Professor, SJCIT, Chickballapur-562101 Mr Shashi Kumar N V, Professor, SJCIT, Chickballapur-562101 Ms Swetha K S, PG Student, VVIT, Bengaluru