CARBON BLACK A WASTE FROM RUBBER INDUSTRY IS USED AS AN ADDITIVE IN CONCRETE TO REDUCE ITS PORES &IMPROVE DENSITY HARDNESS,STRENGTH,REDUCE PERMEABILITY

1. WASTE CARBON BLACK
AS A FILLER IN CONCRETE
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2. WASTE CARBON BLACK AS A FILLER IN CONCRETE
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STRUTURE OF PRESENTATION

3. WASTE CARBON BLACK AS A FILLER IN CONCRETE
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INTRODUCTION

4. WASTE CARBON BLACK AS A FILLER IN CONCRETE
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The presence of pores in concrete proves to be a
major problem ever since it was discovered.
Pores in turn attract water that leads to various ill
effects .
 A study is made to minimize the pores present using
carbon black as filler.
And suggest the optimum percentage of CB to be
added in concrete for its enhanced performance .
OBJECTIVE

5. WASTE CARBON BLACK AS A FILLER IN CONCRETE
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For this various tests are carried out on specimens
containing various percentages of carbon black .
The effect of added carbon black on corrosion of
steel reinforcement was also studied.
CB powder is a waste from rubber industry & finds
difficulty in its disposal
By using carbon black as filler in concrete we can
reduce this problem to a great extent.

6. WASTE CARBON BLACK AS A FILLER IN CONCRETE
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LITERATURE REVIEW
Dr.G.Chitra,P.Vetri Selvi,Dr.D.Vijayalakshmi(2014) conducted a
study to suggest the optimum percentage of carbon black to be
added in concrete by casting specimens with different
percentages of carbon black.
Masadeh, S. (2015) Studied the effect of carbon black on
corrosion of steel reinforcement in concrete.
B.Padma priya, Mrs.K.Pandeeswari.M.E.(2016) Investigated
the effect of PET (Polyethylene Terephthalate) and carbon black
on various strength properties of concrete.

7. WASTE CARBON BLACK AS A FILLER IN CONCRETE
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T.M. Jeyashree,G. Chitra(2017)Conducted a study on
uniformity, surface hardness, split tensile strength, flexural
strength and compressive strength of concrete specimens
containing various percentages of carbon black .
Gaurav Navnit Nagavkar(2017) An attempt was made using
carbon black powder, a waste from rubber industry as filler and
Calcium Sulphate in the form of hydrate is used as desiccant in
concrete.

8. CARBON BLACK
 Carbon black is virtually pure elemental carbon in
the form of colloidal particles
 They are produced by incomplete combustion or
thermal decomposition of gaseous or liquid
hydrocarbons under controlled conditions.
 It is a waste from rubber industry, finds difficulty in
disposal.
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WASTE CARBON BLACK AS A FILLER IN CONCRETE

9. WASTE CARBON BLACK AS A FILLER IN CONCRETE
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Its physical appearance is that of a black, finely divided pellet or
powder.
The specific gravity of carbon black is 1.33 and pH value 6.
This indicates that carbon black is almost an inert material.

10. Due to their extreme small size they can fill the
pores thereby :
Increase density of concrete which improves its
strength and resistance to atmospheric attack
Decrease in permeability of concrete
It is a waste from rubber industry and are dumped
into soil creating soil pollution and contamination of
water table.
By using carbon black as filler in concrete we can
reduce this problem to a great extent.
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WASTE CARBON BLACK AS A FILLER IN CONCRETE
ADVANTAGES OF USING CARBON BLACK
AS A FILLER IN CONCRETE

11. EXPERIMENTAL SETUP AND
TESTING OF SPECIMENS
WASTE CARBON BLACK AS A FILLER IN CONCRETE
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12. S
P
E
C
I
M
E
N
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WASTE CARBON BLACK AS A FILLER IN CONCRETE
18 concrete cubes of
150x150x150 mm size
12 concrete cylinders of
150x300 mm size.
Cubes cast with the 0%, 2%,
5%, 8% , 12% and 15% of
CB
Cylinders cast with
0%, 2%, 5% and 8% CB
M20 Grade
concrete is used

13. PREPARATION OF CONCRETE MIX
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WASTE CARBON BLACK AS A FILLER IN CONCRETE
Weight
batching
CA, fine
aggregates
and water
mixed
manually
on a water
tight
platform
Water added
gradually &
mixed for
10min to get
a uniform
mix
cement &
remnant of
water
added &
mixed for
2min
CB is
added &
mixed for
3min

14. WASTE CARBON BLACK AS A FILLER IN CONCRETE
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COMPRESSIVE STRENGTH TEST
To determine the
compressive strength of
concrete cubes, the
specimen was placed in
the compression testing
machine after curing.
The load was applied
gradually without shock and
continuously at the rate of
140kg/cm2/min till the
specimen fails. The max load
at failure is noted

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WASTE CARBON BLACK AS A FILLER IN CONCRETE

16. REBOUND HAMMER TEST
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WASTE CARBON BLACK AS A FILLER IN CONCRETE
This method is
based on the
principle that the
rebound of elastic
mass depends on
the hardness of
surface against
which the mass
strikes.
The surface
hardness and
therefore the
rebound is taken
to be related to
the compressive
strength of
concrete cubes

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WASTE CARBON BLACK AS A FILLER IN CONCRETE
The results of rebound hammer test shows that concrete specimen with
2%, 5% has given better results when compared to control specimen.

18. non destructive
method
establish the
homogeneity &
find
imperfections
higher
velocity
obtained
with good
quality
velocity of an
ultrasonic pulse
through a
material
depends upon
the µ, E ,
density
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WASTE CARBON BLACK AS A FILLER IN CONCRETE
ULTRASONIC PULSE VELOCITY TEST

19. WASTE CARBON BLACK AS A FILLER IN CONCRETE
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Experimental Setup of Ultrasonic Pulse Velocity Test

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WASTE CARBON BLACK AS A FILLER IN CONCRETE
The results of UPV test shows that
CB increases the uniformity of
concrete.
Among CB concrete specimens 2%
shows the best result.

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WASTE CARBON BLACK AS A FILLER IN CONCRETE
SPLIT TENSILE STRENGTH TEST
Splitting tensile strength test was conducted on concrete cylinders to
determine the tensile strength of CB concrete.
The specimen was taken from water after 28 days of curing & wiped out.
The weight and dimension of the specimen was noted.
The cylinder specimen was placed on compression testing machine & load
was applied continuously without shock at a constant rate.
 The breaking load (P) was noted.

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WASTE CARBON BLACK AS A FILLER IN CONCRETE
 Results show that the split tensile strength of CB concrete is lesser
when compared to that of control specimen.
Since carbon black imparts brittle nature in concrete, this makes the
concrete weak in tension.

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WASTE CARBON BLACK AS A FILLER IN CONCRETE
 Optimum % of CB in concrete was obtained from the above-
mentioned tests results.
For the optimum % obtained, concrete cylinders of size 150 mm
diameter and 300 mm height were cast with and without
CB powder with rebar & were used for conducting OCP test.
 All the specimens were taken out after 28 days of
curing and then dried.
OPEN CIRCUIT POTENTIAL TEST

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WASTE CARBON BLACK AS A FILLER IN CONCRETE
 Specimens are immersed in 3.5% NaCl, the
potential of the reinforced bar was measured
against saturated calomel electrode (SCE) .
 Then the specimens were subjected to 3.5%
NaCl solutions to induce accelerated corrosion.
 The potential readings are measured
periodically & research was continued for 60
days.

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WASTE CARBON BLACK AS A FILLER IN CONCRETE
RELATIONSHIP B/W OCP VALUES & PROBABILITY
OF CORROSION

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WASTE CARBON BLACK AS A FILLER IN CONCRETE

27. WASTE CARBON BLACK AS A FILLER IN CONCRETE
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Both the control and carbon black concrete showed the
negative potential of more than -50 mV initially at 7 to 10 days.
After that potential, the value of all specimens decreases
simultaneously with increasing number of days.
 It is also noticed that the corrosion rate of CB concrete is
less when compared to the control specimen.

28. RESULT AND CONCLUSION
From the present study, the following conclusions are
arrived:
 Non-destructive tests and compressive strength test
results show that performance of 2%, 5% and 8% carbon
black concrete is improved compared to control specimen.
 Split tensile strength for 2% carbon black specimen is
reduced by 5% compared to control specimen.
 With every 2% increase in carbon black, split tensile
strength has been reduced by 4% approximately.
 OCP test results show improved performance for carbon
black specimens. 28
WASTE CARBON BLACK AS A FILLER IN CONCRETE

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WASTE CARBON BLACK AS A FILLER IN CONCRETE
Being very fine particle CB fill the pores present in concrete
and the permeability of concrete has reduced.
 From the Open circuit potential test results it can be seen
that 5% and 8% carbon black addition is effective in RCC
elements.
 Addition of carbon black beyond 8% is ineffective, seen from
the reduction in performance of 12% and 15% specimens.
Hence, it is concluded that the addition of carbon black
between 5% and 8% as a filler material will be very effective in
enhancing the performance of concrete elements.

30. Investigate
the
performance
of concrete
with higher
% of CB as
filler with the
introduction
of binders
Study the
performance
of concrete
with CB as a
replacement
for cement.
Study effect
of CB on
cement
hydration
Study effect
of CB on
inter
transition
zone
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WASTE CARBON BLACK AS A FILLER IN CONCRETE
FUTURE SCOPE

31. REFERENCE
 Dr.G.Chitra, P.Vetri Selvi, Dr.D.Vijayalakshmi (2014).
“Carbon Black as an Additive in Conventional Concrete”,
International Journal of Emerging Technology and Advanced
Engineering.
 Masadeh, S. (2015) “The Effect of Added Carbon Black to
Concrete Mix on Corrosion of Steel in Concrete”, Journal
of Minerals and Materials Characterization and
Engineering, 3, 271-276.
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WASTE CARBON BLACK AS A FILLER IN CONCRETE

32. WASTE CARBON BLACK AS A FILLER IN CONCRETE
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T.M. Jeyashree and G. Chitra(2016) “Experimental
Studies On Concrete Elements Using Waste Carbon Black
As Filler Material “,Asian Journal Of Civil Engineering (Bhrc)
Vol. 18.
B.Padma priya, Mrs.K.Pandeeswari.M.E.(2016)
“Experimental Investigation on the Properties of Concrete
with Carbon Black and PET”, International Journal of
Advanced Research (2016), Volume 4, Issue 4, 1082-1088.
Gaurav Navnit Nagavkar(2017) “Effect On Properties Of
Concrete With Partial Replacement Of Additives With
Cement”,International Journal Of Engineering Sciences &
Research Technology .

33. THANK YOU…
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WASTE CARBON BLACK AS A FILLER IN CONCRETE