1. A
SEMINAR
ON
“UTILIZATION OF INDUSTRIAL WASTE IN SELF
COMPACTING CONCRETE”
UNDER THE GUIDENCE OF PRESENTED BY:
PROF C. G. KONAPURE SUHAIL .H .SHAIKH
BE -CIVIL
WALCHAND INSTITUTE OF TECHNOLOGY
SOLAPUR
2. WHAT IS MEAN BY CONCRETE ?
“Concrete is a composite construction material
composed primarily of aggregate, cement, and water”.
The aggregate is generally a coarse gravel or crushed
rocks such as limestone, or granite, along with a fine
aggregate such as sand.
Concrete has relatively high compressive strength, but
much lower tensile strength. 2
3. SELF COMPACTING CONCRETE :
“Self compacting Concrete is highly engineered
concrete with much higher fluidity without
segregation and is capable of filling every corner
of form work under its self weight only”.
It eliminates the need of vibration either internal or
external for its compaction.
It reduces the deterioration of concrete quality
due to lack of skilled labors.
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4. INTRODUCTION TO SELF COMPACTING CONCRETE:
It was first devloped in japan in late 80’s to increase the
concrete quality.
It is an innovative concrete which flows under its own
weight.
Construction material consists of cement and Aggregates
only.
It eliminates the vibration either internal or external.
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5. TYPES OF SELF COMPACTING CONCRETE
Powder type of self compacting concrete.
Viscosity agent type self compacting concrete.
combination type self compacting concrete.
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6. ADVANTAGES OF SCC
Beneficial in structures where casting are difficult due to
congested reinforcement.
shows good filling ability.
very well suited for special and technically demanding
structures such as tunnel linings.
Reduction in wear and tear of forms, therefore, it extends
the service life of forms.
Reduction in the number of worker.
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8. DISADVANTAGES OF SCC:
The production of SCC places more stringent requirements on
the selection of materials in comparison with conventional
concrete.
An uncontrolled variation of even 1% moisture content in the
fine aggregate will have a much bigger impact on the. Property
of SCC.
The development of a SCC requires a large number of a trial
batches.
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9. INGRADIENTS USED:
Cement:-
Generally Portland cement is used.
Aggregates:-
Aggregate of size 10 mm is desirable for structures
having congested reinforcement.
Aggregates should be cubical or rounded.
Particles smaller than 0.125mm i.e. 125 micron size are
considered as FINES which contribute to the
powder content.
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10. Mixing water: -
Ordinary potable water of normally pH 7 is used for
mixing and curing the concrete specimen.
Admixtures for SCC:-
There are two types of admixture normally added in
scc.
chemical admixtures
Mineral admixtures
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11. Chemical Admixtures:-
These are essential component of scc used to provide
necessary workability, freezing resistance.
e.g; Glenium TM SKY 784
Mineral Admixtures:-
These improves quality and durability of SCC.
e.g; fly ash, red mud & foundry sand.
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12. HOW TO CHECK SUITABILITY?
There are many new tests: V-funnel, L-box, U-box,, Slump Flow
and J-ring.
While several of these may be used in mix development, only
the some will find site use.
Slump flow test:
It used to find flowing Ability
of concrete in absence of
obstructions.
It was first developed in japan.
The diameter of concrete circle
is the measure of filling ability
of concrete.
12Fig 3: slump flow test
13. 13
Fig 4: U-box test Fig 5:V funnel test
Fig 6: J- ring test Fig 7: L-box test
14. WHAT IS RED MUD?
Red mud is the iron rich residue from the digestion of bauxite.
It is one of the major solid waste coming from Bayer process
of alumina production.
It is a finely powdered mud. It adversely effects the air, land
& water environment of surrounding area.
At present about 60 million tones of red mud is generated
annually worldwide which is not being disposed or recycled
satisfactorily.
14
fig 3:Red mud dumping
15. WHAT IS FOUNDRY SAND?
Foundry sand consists of clean,
uniformly sized, high quality
silica sand that is bonded to
form molds for ferrous and
nonferrous metal castings.
Angle of shear resistance of
foundary sand is in the range of 33 to 40 degree as
compared to conventional sand.
The automotive industry and its parts suppliers are the
major generators of foundry sand. 15
Fig4 : foundry waste sand
16. NEED FOR SCC
Foundry sand and red mud has pozzolonic properties hence
increases the binding properties .
Red mud has higher compressive strength ,therefore it can be
used to prepare lighter concrete.
Foundry waste sand basically contains uniformly sized, and
which having one or more organic binder
It gives better strength at the same time it reduces the cost
problems.
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17. Foundry waste sand has low absorption and non plastic nature.
shear resistance of foundary sand is in the range of 33 to 40
degree as compared to conventional sand.
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18. WHAT’S NEW?
Industrial waste (i.e.: red mud ,foundry waste sand) is
used for preparation of SCC.
Instead of cement this industrial waste are used in
different percentage.
Red mud:1%, 2%, 3% upto 8%.
foundry waste sand: 2%, 4% upto 10%.
Aim of experimentation:
The main aim of this experimentation is to find out the
effect of addition of red mud, which is a waste product
from the aluminium industries, and foundry waste sand,
which is a waste product from foundry, on the properties
of self compacting concrete containing two admixtures.
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19. MATERIAL USED:
The specific gravity of sand was found to be 2.55 and was
Zone II sand.
The specific gravity of coarse aggregates used was found
to be 2.61.
The coarse aggregates were 12mm and down size.
A water/binder ratio 0.31.
The flyash/cement ratio used was 1:3.5.
In addition to this red mud and foundry sand is used.
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20. WHAT IS THE TEST RESULTS?
FOR SELF COMPACTING CONCRETE
Compressive strength= 42.94MPa
Tensile strength= 3.77MPa
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Percentage
addition of red
mud
Compressive
strength (MPa)
Tensile
strength (MPa)
1 41.18 4.00
2 44.29 4.62
3 42.66 3.34
4 40.29 3.25
5 37.62 3.10
6 35.11 2.87
7 34.51 2.50
8 33.62 2.16
22. SUGGESTED VALUE OF ACCEPTANCE FOR DIFFERENT
TEST METHODS OF SCC.
SR.
NO
Methods Unit Typical range of values
- - - Minimum Maximum
1 J-ring mm 0 10
2 v-funnel sec 6 12
3 Time increase,
V-funnel at
sec 0 3
4 U-box h2-h1 0 30
5 Slump flow by
Abrams
mm 600 800
6 T50cm slump
flow
sec 2 5
7 L-box (h2/h1) 0.8 1 22
