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

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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.

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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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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.

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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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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Fig 1:Congested reinforcement

Fig 2:Tunnel reinforcement

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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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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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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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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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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.

Fig 3: slump flow test

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Fig 4: U-box test

Fig 5:V funnel test

Fig 6: J- ring test Fig 7: L-box test

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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.

fig 3:Red mud dumping

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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.

Fig4 : foundry waste sand

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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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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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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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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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WHAT IS THE TEST RESULTS?

FOR SELF COMPACTING CONCRETE Compressive strength= 42.94MPa

Tensile strength= 3.77MPa

Percentageaddition of redmud

Compressivestrength (MPa)

Tensilestrength (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

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Percentageaddition offoundry wastesand

Compressivestrength (MPa)

Tensilestrength (MPa)

2 42.03 3.86

4 40.15 3.25

6 37.70 2.73

8 35.68 1.93

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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

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Percent-age of red mud

Slum-pflow(mm)

Slumptest(sec)

V –funnelflowtimesec

U – boxFillingheightH1-H2(mm)

L –box

- - - - - H2/H1 (T20)sec

(T40)Sec

1 700 4.7 24.61 0 0.88 6.30 10.2

2 720 4.3 18.70 0 0.96 3.80 6.5

3 710 4.6 32.80 5 0.85 4.60 8.8

4 680 5.3 34.60 5 0.83 5.20 9.2

5 650 5.8 36.80 10 0.78 5.50 11.2

6 630 8.6 42 10 0.60 6.30 13.4

7 590 12.4 52.80 15 0.39 7.20 15.6

8 560 13.2 66.54 20 0.16 9.40 25.2

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Percentageof foundrywaste sand

Slumpflow(mm)

Slumptest(sec)

V –funnelflowtime

U – boxFillingheightH1-H2(mm)

L –box

- - - - - H2/H1 (T20)sec

(T40)sec

2 730 4.1 18.10 0 0.92 3.98 7.68

4 680 5.3 33.00 10 0.92 5.32 9.98

6 610 9.7 45.30 15 0.85 5.80 11.68

8 530 19.1 79.80 20 0.43 8.98 17.92

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FIB

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FOR

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REFRENCES

OKAMURA, H (1997), "Self-Compacting High Performance concrete", Concrete International, Vol. 19, No. 7, pp-50-54.

OKAMURA. H. and OUCHI. M, "Self Compacting Concrete - Development, present use and future", Ist International RILEM Symposium on Self Compacting Concrete, 1999, Concrete International pg 3-1

Cristian Druta ,August 2003 “Tensile strength and bonding characteristics of self-compacting concrete”.

WEBSITES: www.acclimited.com www.pozzocrete.co.in www.hindalco.com www.redmudproject.or

THANK

YOU

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ANY QUESTIONS ?