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International Research Journal of Engineering and Technology (IRJET) e-ISSN: 2395 -0056
Volume: 02 Issue: 07 | Oct-2015
www.irjet.net
p-ISSN: 2395-0072
Silica Fume & Ground Granulated Blast Furnace Slag as Cement
Replacement in Fiber Reinforced Concrete
Anusha Suvarna[1], Prof .P.J. Salunke[2], Prof. N.G.Gore[3] Prof. T.N.Narkehde[4]
1 PG
Student, Department of civil engineering, MGM’s College of Engineering & Technology, Maharashtra, India
, Department of civil engineering, MGM’s College of Engineering & Technology, Maharashtra, India
2 3 4Professor
---------------------------------------------------------------------***--------------------------------------------------------------------Abstract: A high-strength concrete is always a high1. Introduction
performance concrete, but a high-performance
Concrete is the most widely used man-made
concrete is not always a high-strength concrete.
construction material in the world. The utility and
Durable concrete specifying a high-strength concrete
does not ensure that a durable concrete will be
elegance as well as the durability of concrete structures,
achieved. It is very difficult to get a product which
built during the first half of the last century with
simultaneously fulfills all of the properties. So the
Ordinary Portland Cement (OPC) and plain round bars of
different pozzolanic materials like Ground
mild steel, the easy availability of the constituent
Granulated Blast furnace Slag (GGBS), Silica Fume,
materials of concrete and the knowledge that virtually
Rice Husk Ash, Fly Ash, High Reactive Metakaolin, are
some of the pozzolanic materials which can be used
any combination of the constituents leads to a mass of
in concrete as partial replacement of cement, which
concrete
have
bred
contempt.
Strength was
are very essential ingredients to produce high
emphasized without a thought on the durability of
performance concrete. It is very important to
structures. As a consequence of the liberties taken, the
maintain the water cement ratio within the minimal
durability of concrete and concrete structures is on a
range, for that we have to use the water reducing
southward journey; a journey that seems to have gained
admixture i.e. superplasticizer, which plays an
important role for the production of high
momentum on its path to self– destruction. The Ordinary
performance concrete. So I herein this project will
Portland Cement (OPC) is one of the main ingredients
test on different materials like Ground Granulated
used for the production of concrete and has no
Blast Furnace Slag, and Silica Fume to obtain the
alternative in the civil construction industry.
desired needs. I will use synthetic fiber (i.e. Recron
Unfortunately, production of cement involves emission of
fiber) in percentage 0.2%, 0.3%, 0.4% to that of total
weight of composite and casting will be done to find
large amounts of carbon-dioxide gas into the atmosphere,
out the optimum percentage of fiber to be used.
a major contributor for green house effect and the global
Finally I will use different percentage of Silica Fume
warming, hence it is inevitable either to search for
& GGBS with the replacement of cement keeping
another material or partly replace it by some other
constant the optimum fiber content and concrete will
material. The search for any such material, which can be
be casted. Compressive test, splitting test, flexural
used as an alternative or as a supplementary for cement
test will be conducted on the prepared mortar cubes,
cylinders & prisms.
should lead to global sustainable development and lowest
Keywords – Recron Fiber, Silica Fume, GGBFS,
Strength Test.
possible environmental impact. So for this we need to go
for the addition of pozzolanic materials along with
superplasticizer with having low water cement ratio. Also
© 2015, IRJET
ISO 9001:2008 Certified Journal
Page 438
International Research Journal of Engineering and Technology (IRJET) e-ISSN: 2395 -0056
Volume: 02 Issue: 07 | Oct-2015
www.irjet.net
now a day’s one of the great application in various
structural field is fiber reinforced concrete, which is
getting popularity because of its positive effect on
various properties of concrete. The major advantages of
p-ISSN: 2395-0072
Final Setting Time
315 min
Normal Consistency
32%
Specific Gravity
3.15
Specific Surface
330m2/kg
fiber reinforced concrete are resistance to microcraking,
impact
resistance,
resistance
to
fatigue,
reduced
permeability, and improved strength in shear, tension,
3.2 Fine Aggregates
flexure and compression.
2.
Table No. 2 Properties of F.A
Properties
Results
Objective of the study
The objective of the present work is to develop
concrete with good strength so that durability will be
attained. So for the present work, use of different
pozzolanic materials like ground granulated blast
Specific Gravity
2.62
Water Absorption
1.43%
3.3 Coarse aggregate
furnace slag, and silica fume along with fiber is made.
Table No. 3 Properties of C.A
The experimental program undertaken is as follow;
a.
To determine the mix proportion with ground
Properties
20mm
12mm
Specific Gravity
2.79
2.76
Water Absorption
0.45%
0.51%
granulated blast furnace slag and silica fume with
fiber to achieve the desire needs.
b.
To determine the optimum percentage of fiber
that can be added to concrete to achieve desired
needs.
c.
Also to determine the optimum percentage of
GGBFS and Silica Fume that can be replaced with
Results
3.4 Mix Design
Table No. 4 Mix Design
Grade Of Concrete
M30
cement in Fiber Reinforced Concrete.
d.
To
investigate
different
basic
properties
of
concrete such as compressive strength, splitting
tensile strength, flexural strength.
Cementitious material
245kg/m3
GGBS ( @ 30% replacement of
cement)
105 kg/m3
Coarse aggregate : 20mm
796 kg/m3
3. Material Properties
3.1 Cement
Table No. 1 Properties of Cement
Properties
Grade
Initial Setting Time
© 2015, IRJET
Coarse aggregate : 12mm
525 kg/m3
Fine aggregate
701 kg/m3
Water
140 kg/m3
Superplasticizer(S u n p l a s t
@ 0.6%)
2.1 kg/m3
Fiber (Recron 3s Fiber @ 0.2
% of composite)
5.03 kg/m3
Results
53 grade OPC
131 min
ISO 9001:2008 Certified Journal
Page 439
International Research Journal of Engineering and Technology (IRJET) e-ISSN: 2395 -0056
Volume: 02 Issue: 07 | Oct-2015
www.irjet.net
4. Experimental Investigation
1.
p-ISSN: 2395-0072
compressive strength of concrete is higher at with 0.3%
Synthetic fiber i.e. Recron fiber is used in concrete
fiber compared to other fiber composition. So the
for the production of fiber reinforced concrete.
optimum dosage of fiber for getting maximum strength for
Recron fiber has been used in percentages i.e. 0.2%,
OPC is 0.3%.
0.3%, and 0.4% to the weight of concrete and study
the 7 days and 28 days compressive strength.
2. Out of 0.2%, 0.3%, and 0.4% addition of Recron
fiber optimum percentage addition of Recron fiber is
Table no. 6 Effect of GGBS on compressive strength using
0.3% fiber
7 days
Compressive
strength
(N/mm2)
GGBS
(%)
used for further study.
3. Different percentages of silica fume i.e. 5%, 10%,
28days
compressive
strength (N/mm2)
0%
25.88
38.62
15%, 20% and fixing constant fiber percentage at
30%
26.02
38.81
optimum percentage i.e. at 0.3% cubes, cylinders
40%
27.57
39.61
50%
30.46
41.49
60%
29.69
40.74
and prisms were casted and tested to analyze the
change in compressive, splitting tensile and flexural
strength.
4. GGBS at different percentage i.e. 30%, 40%, 50%,
GGBS cement is added to concrete in the
60% and fixing constant fiber percentage at
concrete manufacturer's batching plant, along with
optimum percentage i.e. at 0.3% cubes, cylinders
Portland cement, aggregates and water. GGBS is used as a
and prisms were casted and tested to analyze the
direct replacement for Portland cement, on a one-to-one
change in compressive, splitting tensile and flexural
basis by weight. Replacement levels for GGBS vary from
strength.
30% to up to 85%. Typically 40 to 60% is used in most
instances. In the study it was observed that cement
5. Test Results
when replaced with GGBS there is a considerable increase
in compressive strength. Out of the four combinations
Table No. 5 Effect of Recron fibre on
compressive
strength
Age of
considered cement replaced with 50% GGBFS shows
higher strength and produced more workable concrete. In
% of Recron Fiber used
Cubes
0.2%
0.3%
0.4%
7 days
22.69
25.88
24.07
28 days
36.51
38.62
37.21
the 28 day strength there is an increase in strength for
all the four combinations considered. Replacing cement
with 50% G G B F S
From the above result it was observed that using
Recron fiber from 0.2% to 0.4% the compressive strength
is maximum at 0.3%, i.e. from 0.2% to 0.3% compressive
was
considered
as
o p t i m u m cement replacement for M30 concrete.
Table no. 7 Effect of GGBS on Split Tensile strength using
0.3% fiber
GGBS
(%)
7 days Split Tensile
strength (N/mm2)
28days Split
Tensile strength
(N/mm2)
strength was increased and on further increment of fiber
0%
2.80
3.16
content the strength reduces. The 7 day and 28 days
30%
2.87
3.27
© 2015, IRJET
the
ISO 9001:2008 Certified Journal
Page 440
International Research Journal of Engineering and Technology (IRJET) e-ISSN: 2395 -0056
Volume: 02 Issue: 07 | Oct-2015
www.irjet.net
p-ISSN: 2395-0072
40%
3.15
3.46
silica fume and its void filling ability. The compressive
50%
3.60
3.78
strength of the M30 mix at 7 and 28 days age, with
60%
3.04
3.28
replacement of cement by silica fume with 0.3% fiber
From the above result it is observed that as the
replacement level increases there is an increase in split
tensile strength for M30 grade of concrete up to 50%
replacement level, and beyond that level there is a
decrease in split tensile strength.
fiber
(%)
7 days Flexural
strength
(N/mm2)
replacement up to10% with silica fume with a constant
fiber content leads to increase in compressive strength.
using 0.3% fiber
GGBS
(%)
28days Flexural
strength (N/mm2)
0%
5.19
5.54
30%
5.23
5.88
40%
5.74
6.49
50%
6.40
6.94
60%
6.23
6.41
From the above observation it is clear that the
flexural strength at the age of 28 days of GGBFS concrete
continuously increased and reached a maximum value of
10%replacement level for
replacement level of 10% and then decreased. Cement
Table no. 10 Effect of Silica Fume on Split Tensile strength
Table no. 8 Effect of GGBS on Flexural strength using 0.3%
GGBS
content was increased gradually up to an optimum
M30
grade concrete
respectively.
0%
2.80
3.16
5%
2.81
3.50
10%
3.39
4.27
15%
2.74
3.91
20%
2.68
3.74
As replacement level increases there is an increase
in split tensile strength for M30 grade of concrete up to
10% replacement level, and beyond that level there is a
decrease in split tensile strength.
Table no. 11 Effect of Silica Fume on Flexural strength
GGBS
using 0.3% fiber
(%)
0%
7 days
Compressive
strength
(N/mm2)
25.88
28dayscompressive
strength (N/mm2)
38.62
5%
31.12
42.71
10%
33.53
44.59
15%
31.20
43.96
20%
29.85
43.27
There is a significant improvement in the strength
of concrete because of the high pozzolanic nature of the
© 2015, IRJET
28days Split
Tensile strength
(N/mm2)
strength using 0.3% fiber
Table no. 9 Effect of Silica Fume on compressive strength
GGBS
7 days Split
Tensile strength
(N/mm2)
7 days Flexural
strength
(N/mm2)
(%)
28days Flexural
strength
(N/mm2)
0%
5.19
5.54
5%
5.25
5.70
10%
5.83
6.34
15%
5.44
6.10
20%
5.01
5.78
The flexural strength at the age of 28 days of silica
fume concrete continuously increased with respect to
controlled concrete and reached a maximum value of
10%replacement
level
for
M30
grade
concrete
respectively.
ISO 9001:2008 Certified Journal
Page 441
International Research Journal of Engineering and Technology (IRJET) e-ISSN: 2395 -0056
Volume: 02 Issue: 07 | Oct-2015
www.irjet.net
6. Conclusion
1.
References
Use of GGBS as cement replacement increases
consistency.
2.
Cement replaced with 50% GGBS with 0.3 % fiber
shows higher compressive.
3. As the replacement level of cement by GGBS
increases there is an increase in split tensile strength
& flexural strength for M30 grade of conc+rete up to
50% replacement level, and beyond that level there
is a decrease in split tensile and flexural strength.
4.
Using 50% GGBS with 0.3% fiber percentage the 28
days compressive strength increases 7% more than
concrete with 0.3% fiber only.
5.
So it is inculcated that 0.3% Recron fibre and
replacement of 50 % GGBS with cement is required
to achieve desired needs.
6.
As the replacement of cement with different
percentages
with
Silica
fume
increases
the
consistency increases.
7.
The compressive strength of the M30 mix at 7 and
28 days age, with replacement of cement by silica
fume with 0.3% fiber content was increased
gradually up to an optimum replacement level of
10% and then decreased.
8.
As the replacement level of cement by silica fume
increases there is an increase in split tensile strength
& flexural strength for M30 grade of concrete up to
10% replacement level, and beyond that level there
is a decrease in split tensile and flexural strength.
9.
Using 10% silica fume with 0.3% fiber percentage
the 28 days compressive strength increases 13%
more than concrete with 0.3% fiber only.
10. So it is inculcated that 0.3% Recron fibre and
replacement of 10 % silica fume with cement is
required to achieve desired needs.
© 2015, IRJET
p-ISSN: 2395-0072
[1] A Oner & S Akyuz, “An experimental study on
optimum usage of GGBS for the compressive
strength of concrete”, Cement & Concrete
Composite, Vol. 29, 2007, 505-514.
[2] A. M Alhozaimy, P Soroushian & F Mirza,
“Mechanical Properties of Polypropylene
Fiber Reinforced Concrete and the Effects of
Pozzolanic Materials”, Cement & Concrete
Composite, Vol. 18, 1996, 85-92.
[3] Andrzej Ajdukiewicz and Wojciech Radomski,
“Trends in the Polish research on high
performance concrete”, Cement and Concrete
Composite, Vol. 24, 2002, 243-251
[4] Caijun Shi
and Jueshi Qian, “High
performance cementing materials
from
industrial slags”, Resourses Conservation &
Recyclin, Vol. 29, 2000, 195-207
[5] I. Papayianni , G. Tsohos, N. Oikonomou, P.
Mavria, “Influence of superplasticizer type and
mix design parameters on the performance of
them in concrete mixtures”, Cement &
Concrete Composite, Vol. 27, 2005, 217-222
[6] Janusz Potrzebowski, “The splitting test
applied to steel fiber reinforced concrete”, The
International Journal of Cement Composites
and Lightweight Concrete, Vol. 5, No. 1,
February 1983
[7] K Ganesh Babu and V. Sree Rama Kumar,
“Efficiency of GGBS in Concrete”, Cement
and Concrete Research, Vol. 30, 2000, 10311036.
[8] M. Collepardi, “Admixtures used to enhance
placing characteristics of concrete”, Cement &
Concrete Composite, Vol. 20, 1998, 103-112
[9] Pierre-Claude
Aitcin,
“The
durability
characteristics
of
high
performance
concrete”, Cement & Concrete Composite,
Vol. 25, 2003, 409-420
[10] Pierre-ClaudeAitcin,“Development in the
application of high performance concrete”,
Construction and Building Material, Vol. 9.
No. 1, 1995, 13-17
[11] Ronald
F.
Zollo, “Fiber-reinforced
Concrete: an Overview after 30 Years
of
Development”, Cement & Concrete
Composite, Vol. 19, 1997, 107-122
[12] S. Bhanja, B. Sengupta, “Influence of silica
fume on the tensile strength of concrete”,
Cement and Concrete Research, Vol. 35,
2005, 743-747
ISO 9001:2008 Certified Journal
Page 442
International Research Journal of Engineering and Technology (IRJET) e-ISSN: 2395 -0056
Volume: 02 Issue: 07 | Oct-2015
www.irjet.net
p-ISSN: 2395-0072
[13] S. Bhanja, B. Sengupta, “Modified water–
cement ratio law for silica fume concretes”,
Cement and Concrete Research, Vol. 33,
2003, 447-450
[14] IS 10262: 1982, “Recommended Guidelines for
Concrete Mix design”,
Bureau of Indian
Standard, New Delhi
[15] IS 383: 1970, “Specification for Coarse
aggregate and Fine aggregate from Natural
Sources for Concrete”, Bureau of Indian
Standard, New Delhi
[16] IS 456: 2000, “Indian Standard Code of Practice
for Plain and Reinforced Concrete”, Bureau of
Indian Standard, New Delhi
[17] IS 516: 1959, “Flexural Strength of Concrete”,
Bureau of Indian Standard, New Delhi
[18] IS 5816: 1999, “Spliting Tensile Strength of
Concrete Method of Test”, Bureau of Indian
Standard, New Delhi
[19] IS 9103: 1999, “Indian Standard Concrete
Admixture Specification”, Bureau of Indian
Standard, New Delhi
[20] IS 9399: 1959, “Specification for Apparatus for
Flexural Testing of Concrete”, Bureau of Indian
Standard, New Delhi
© 2015, IRJET
ISO 9001:2008 Certified Journal
Page 443
Volume: 02 Issue: 07 | Oct-2015
www.irjet.net
p-ISSN: 2395-0072
Silica Fume & Ground Granulated Blast Furnace Slag as Cement
Replacement in Fiber Reinforced Concrete
Anusha Suvarna[1], Prof .P.J. Salunke[2], Prof. N.G.Gore[3] Prof. T.N.Narkehde[4]
1 PG
Student, Department of civil engineering, MGM’s College of Engineering & Technology, Maharashtra, India
, Department of civil engineering, MGM’s College of Engineering & Technology, Maharashtra, India
2 3 4Professor
---------------------------------------------------------------------***--------------------------------------------------------------------Abstract: A high-strength concrete is always a high1. Introduction
performance concrete, but a high-performance
Concrete is the most widely used man-made
concrete is not always a high-strength concrete.
construction material in the world. The utility and
Durable concrete specifying a high-strength concrete
does not ensure that a durable concrete will be
elegance as well as the durability of concrete structures,
achieved. It is very difficult to get a product which
built during the first half of the last century with
simultaneously fulfills all of the properties. So the
Ordinary Portland Cement (OPC) and plain round bars of
different pozzolanic materials like Ground
mild steel, the easy availability of the constituent
Granulated Blast furnace Slag (GGBS), Silica Fume,
materials of concrete and the knowledge that virtually
Rice Husk Ash, Fly Ash, High Reactive Metakaolin, are
some of the pozzolanic materials which can be used
any combination of the constituents leads to a mass of
in concrete as partial replacement of cement, which
concrete
have
bred
contempt.
Strength was
are very essential ingredients to produce high
emphasized without a thought on the durability of
performance concrete. It is very important to
structures. As a consequence of the liberties taken, the
maintain the water cement ratio within the minimal
durability of concrete and concrete structures is on a
range, for that we have to use the water reducing
southward journey; a journey that seems to have gained
admixture i.e. superplasticizer, which plays an
important role for the production of high
momentum on its path to self– destruction. The Ordinary
performance concrete. So I herein this project will
Portland Cement (OPC) is one of the main ingredients
test on different materials like Ground Granulated
used for the production of concrete and has no
Blast Furnace Slag, and Silica Fume to obtain the
alternative in the civil construction industry.
desired needs. I will use synthetic fiber (i.e. Recron
Unfortunately, production of cement involves emission of
fiber) in percentage 0.2%, 0.3%, 0.4% to that of total
weight of composite and casting will be done to find
large amounts of carbon-dioxide gas into the atmosphere,
out the optimum percentage of fiber to be used.
a major contributor for green house effect and the global
Finally I will use different percentage of Silica Fume
warming, hence it is inevitable either to search for
& GGBS with the replacement of cement keeping
another material or partly replace it by some other
constant the optimum fiber content and concrete will
material. The search for any such material, which can be
be casted. Compressive test, splitting test, flexural
used as an alternative or as a supplementary for cement
test will be conducted on the prepared mortar cubes,
cylinders & prisms.
should lead to global sustainable development and lowest
Keywords – Recron Fiber, Silica Fume, GGBFS,
Strength Test.
possible environmental impact. So for this we need to go
for the addition of pozzolanic materials along with
superplasticizer with having low water cement ratio. Also
© 2015, IRJET
ISO 9001:2008 Certified Journal
Page 438
International Research Journal of Engineering and Technology (IRJET) e-ISSN: 2395 -0056
Volume: 02 Issue: 07 | Oct-2015
www.irjet.net
now a day’s one of the great application in various
structural field is fiber reinforced concrete, which is
getting popularity because of its positive effect on
various properties of concrete. The major advantages of
p-ISSN: 2395-0072
Final Setting Time
315 min
Normal Consistency
32%
Specific Gravity
3.15
Specific Surface
330m2/kg
fiber reinforced concrete are resistance to microcraking,
impact
resistance,
resistance
to
fatigue,
reduced
permeability, and improved strength in shear, tension,
3.2 Fine Aggregates
flexure and compression.
2.
Table No. 2 Properties of F.A
Properties
Results
Objective of the study
The objective of the present work is to develop
concrete with good strength so that durability will be
attained. So for the present work, use of different
pozzolanic materials like ground granulated blast
Specific Gravity
2.62
Water Absorption
1.43%
3.3 Coarse aggregate
furnace slag, and silica fume along with fiber is made.
Table No. 3 Properties of C.A
The experimental program undertaken is as follow;
a.
To determine the mix proportion with ground
Properties
20mm
12mm
Specific Gravity
2.79
2.76
Water Absorption
0.45%
0.51%
granulated blast furnace slag and silica fume with
fiber to achieve the desire needs.
b.
To determine the optimum percentage of fiber
that can be added to concrete to achieve desired
needs.
c.
Also to determine the optimum percentage of
GGBFS and Silica Fume that can be replaced with
Results
3.4 Mix Design
Table No. 4 Mix Design
Grade Of Concrete
M30
cement in Fiber Reinforced Concrete.
d.
To
investigate
different
basic
properties
of
concrete such as compressive strength, splitting
tensile strength, flexural strength.
Cementitious material
245kg/m3
GGBS ( @ 30% replacement of
cement)
105 kg/m3
Coarse aggregate : 20mm
796 kg/m3
3. Material Properties
3.1 Cement
Table No. 1 Properties of Cement
Properties
Grade
Initial Setting Time
© 2015, IRJET
Coarse aggregate : 12mm
525 kg/m3
Fine aggregate
701 kg/m3
Water
140 kg/m3
Superplasticizer(S u n p l a s t
@ 0.6%)
2.1 kg/m3
Fiber (Recron 3s Fiber @ 0.2
% of composite)
5.03 kg/m3
Results
53 grade OPC
131 min
ISO 9001:2008 Certified Journal
Page 439
International Research Journal of Engineering and Technology (IRJET) e-ISSN: 2395 -0056
Volume: 02 Issue: 07 | Oct-2015
www.irjet.net
4. Experimental Investigation
1.
p-ISSN: 2395-0072
compressive strength of concrete is higher at with 0.3%
Synthetic fiber i.e. Recron fiber is used in concrete
fiber compared to other fiber composition. So the
for the production of fiber reinforced concrete.
optimum dosage of fiber for getting maximum strength for
Recron fiber has been used in percentages i.e. 0.2%,
OPC is 0.3%.
0.3%, and 0.4% to the weight of concrete and study
the 7 days and 28 days compressive strength.
2. Out of 0.2%, 0.3%, and 0.4% addition of Recron
fiber optimum percentage addition of Recron fiber is
Table no. 6 Effect of GGBS on compressive strength using
0.3% fiber
7 days
Compressive
strength
(N/mm2)
GGBS
(%)
used for further study.
3. Different percentages of silica fume i.e. 5%, 10%,
28days
compressive
strength (N/mm2)
0%
25.88
38.62
15%, 20% and fixing constant fiber percentage at
30%
26.02
38.81
optimum percentage i.e. at 0.3% cubes, cylinders
40%
27.57
39.61
50%
30.46
41.49
60%
29.69
40.74
and prisms were casted and tested to analyze the
change in compressive, splitting tensile and flexural
strength.
4. GGBS at different percentage i.e. 30%, 40%, 50%,
GGBS cement is added to concrete in the
60% and fixing constant fiber percentage at
concrete manufacturer's batching plant, along with
optimum percentage i.e. at 0.3% cubes, cylinders
Portland cement, aggregates and water. GGBS is used as a
and prisms were casted and tested to analyze the
direct replacement for Portland cement, on a one-to-one
change in compressive, splitting tensile and flexural
basis by weight. Replacement levels for GGBS vary from
strength.
30% to up to 85%. Typically 40 to 60% is used in most
instances. In the study it was observed that cement
5. Test Results
when replaced with GGBS there is a considerable increase
in compressive strength. Out of the four combinations
Table No. 5 Effect of Recron fibre on
compressive
strength
Age of
considered cement replaced with 50% GGBFS shows
higher strength and produced more workable concrete. In
% of Recron Fiber used
Cubes
0.2%
0.3%
0.4%
7 days
22.69
25.88
24.07
28 days
36.51
38.62
37.21
the 28 day strength there is an increase in strength for
all the four combinations considered. Replacing cement
with 50% G G B F S
From the above result it was observed that using
Recron fiber from 0.2% to 0.4% the compressive strength
is maximum at 0.3%, i.e. from 0.2% to 0.3% compressive
was
considered
as
o p t i m u m cement replacement for M30 concrete.
Table no. 7 Effect of GGBS on Split Tensile strength using
0.3% fiber
GGBS
(%)
7 days Split Tensile
strength (N/mm2)
28days Split
Tensile strength
(N/mm2)
strength was increased and on further increment of fiber
0%
2.80
3.16
content the strength reduces. The 7 day and 28 days
30%
2.87
3.27
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40%
3.15
3.46
silica fume and its void filling ability. The compressive
50%
3.60
3.78
strength of the M30 mix at 7 and 28 days age, with
60%
3.04
3.28
replacement of cement by silica fume with 0.3% fiber
From the above result it is observed that as the
replacement level increases there is an increase in split
tensile strength for M30 grade of concrete up to 50%
replacement level, and beyond that level there is a
decrease in split tensile strength.
fiber
(%)
7 days Flexural
strength
(N/mm2)
replacement up to10% with silica fume with a constant
fiber content leads to increase in compressive strength.
using 0.3% fiber
GGBS
(%)
28days Flexural
strength (N/mm2)
0%
5.19
5.54
30%
5.23
5.88
40%
5.74
6.49
50%
6.40
6.94
60%
6.23
6.41
From the above observation it is clear that the
flexural strength at the age of 28 days of GGBFS concrete
continuously increased and reached a maximum value of
10%replacement level for
replacement level of 10% and then decreased. Cement
Table no. 10 Effect of Silica Fume on Split Tensile strength
Table no. 8 Effect of GGBS on Flexural strength using 0.3%
GGBS
content was increased gradually up to an optimum
M30
grade concrete
respectively.
0%
2.80
3.16
5%
2.81
3.50
10%
3.39
4.27
15%
2.74
3.91
20%
2.68
3.74
As replacement level increases there is an increase
in split tensile strength for M30 grade of concrete up to
10% replacement level, and beyond that level there is a
decrease in split tensile strength.
Table no. 11 Effect of Silica Fume on Flexural strength
GGBS
using 0.3% fiber
(%)
0%
7 days
Compressive
strength
(N/mm2)
25.88
28dayscompressive
strength (N/mm2)
38.62
5%
31.12
42.71
10%
33.53
44.59
15%
31.20
43.96
20%
29.85
43.27
There is a significant improvement in the strength
of concrete because of the high pozzolanic nature of the
© 2015, IRJET
28days Split
Tensile strength
(N/mm2)
strength using 0.3% fiber
Table no. 9 Effect of Silica Fume on compressive strength
GGBS
7 days Split
Tensile strength
(N/mm2)
7 days Flexural
strength
(N/mm2)
(%)
28days Flexural
strength
(N/mm2)
0%
5.19
5.54
5%
5.25
5.70
10%
5.83
6.34
15%
5.44
6.10
20%
5.01
5.78
The flexural strength at the age of 28 days of silica
fume concrete continuously increased with respect to
controlled concrete and reached a maximum value of
10%replacement
level
for
M30
grade
concrete
respectively.
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6. Conclusion
1.
References
Use of GGBS as cement replacement increases
consistency.
2.
Cement replaced with 50% GGBS with 0.3 % fiber
shows higher compressive.
3. As the replacement level of cement by GGBS
increases there is an increase in split tensile strength
& flexural strength for M30 grade of conc+rete up to
50% replacement level, and beyond that level there
is a decrease in split tensile and flexural strength.
4.
Using 50% GGBS with 0.3% fiber percentage the 28
days compressive strength increases 7% more than
concrete with 0.3% fiber only.
5.
So it is inculcated that 0.3% Recron fibre and
replacement of 50 % GGBS with cement is required
to achieve desired needs.
6.
As the replacement of cement with different
percentages
with
Silica
fume
increases
the
consistency increases.
7.
The compressive strength of the M30 mix at 7 and
28 days age, with replacement of cement by silica
fume with 0.3% fiber content was increased
gradually up to an optimum replacement level of
10% and then decreased.
8.
As the replacement level of cement by silica fume
increases there is an increase in split tensile strength
& flexural strength for M30 grade of concrete up to
10% replacement level, and beyond that level there
is a decrease in split tensile and flexural strength.
9.
Using 10% silica fume with 0.3% fiber percentage
the 28 days compressive strength increases 13%
more than concrete with 0.3% fiber only.
10. So it is inculcated that 0.3% Recron fibre and
replacement of 10 % silica fume with cement is
required to achieve desired needs.
© 2015, IRJET
p-ISSN: 2395-0072
[1] A Oner & S Akyuz, “An experimental study on
optimum usage of GGBS for the compressive
strength of concrete”, Cement & Concrete
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[2] A. M Alhozaimy, P Soroushian & F Mirza,
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[3] Andrzej Ajdukiewicz and Wojciech Radomski,
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[4] Caijun Shi
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[5] I. Papayianni , G. Tsohos, N. Oikonomou, P.
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[6] Janusz Potrzebowski, “The splitting test
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[7] K Ganesh Babu and V. Sree Rama Kumar,
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[8] M. Collepardi, “Admixtures used to enhance
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[9] Pierre-Claude
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[10] Pierre-ClaudeAitcin,“Development in the
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[11] Ronald
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ISO 9001:2008 Certified Journal
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International Research Journal of Engineering and Technology (IRJET) e-ISSN: 2395 -0056
Volume: 02 Issue: 07 | Oct-2015
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p-ISSN: 2395-0072
[13] S. Bhanja, B. Sengupta, “Modified water–
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[14] IS 10262: 1982, “Recommended Guidelines for
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Standard, New Delhi
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