UTILIZATION OF SUGARCANE BAGASSE

ASH IN CONCRETEBY SNEHITH DKAUSHIK N

CONTENTS INTRODUCTION PROCESS TO OBTAIN ASH FROM BAGASSE CRYSTAL STRUCTURES OF BAGASSE ASH GRINDING OF BAGASSE ASH PARTICLE SIZE ANALYSIS CHEMICAL AND PHYSICAL PROPERTIES OF BAGASSE APPLICATIONS ADVANTAGES CASE STUDY CONCLUSION REFERENCES

INTRODUCTION By-product during the manufacture of sugar. Fuel in boilers to generate steam and electricity. Bagasse ash causes a great disposal problem. Using waste SCBA as a pozzolonic material to replace cement can reduce the

consumption of cement. Helps solve environmental issue caused by cement production. 1ton sugarcane generates approximately 26% of bagasse and 0.62% of residual ash.

PROCESS TO OBTAIN ASH FROM BAGASSE

BAGASSE CARBONIZATION Bagasse was packed in graphite crucible air tight and

placed inside electric control furnace. Burnt at temperature of 1200oC for 5hrs to obtain black

ash. This bagasse ash is used in the research.

This carbonated bagasse was collected and burned for 6hours at 600oC.

After burn a layer of light colored ash was observed on the surface and then an ash of black color and heterogeneous composition was observed, consisting of leftovers of the sugarcane bagasse that was not burned as well as charcoal particles.

The second burn of CBC lasted for 3hours at 700oC. After this reburn the CBC was cooled naturally. Six samples of ash were collected and dried in the oven for 24

hours at 70oC

CRYSTAL STRUCTURES OF BAGASSE ASH

The main composition of bagasse ash is siliceous oxide (SiO) that react with free lime from cement hydration.

But only un-crystal silica oxide has reactive properties. Therefore for determining the amorphous, the specimens were burned at

different temperature and duration. By using XRD test the crystal amount were investigated. Test results show that non-crystalline ash were obtained from bagasse

burning in 700oC for 90 minutes and also 800oC at time of 15 minutes.

GRINDING OF FINE PARTICLES OF BAGASSE ASH

The other method to make the amorphous shape is grinding for long time.

Grinding was under taken using a mill with steel balls. Grinding time of 120 minutes were chosen and the speed of

revolution were chosen so can acting as impact force that can break silica crystal existed in ash.

After grinding the specific surface is related directly to grain size of particles.

PARTICLES SIZE ANALYSIS

100g each of the dried ash was taken and introduced into a set of sieves arranged in descending order of fineness and shaken for 15 minutes.

The weight retained on each sieve was taken and expressed as percentages of the total sample weight.

From the weight retained, the grain fineness number (AFS) was computed.

CHEMICAL AND PHYSICAL PROPERTIES OF BAGASSESL.

NOCOMPONENT MASS%

1 SiO2 78.342 Al2 8.553 Fe2O 3.614 CaO 2.155 Na2O 0.126 K2O 3.467 MnO 0.138 TiO2 0.509 BaO <0.1610 P2O5 1.0711 Loss Of Ignition 0.42

SL. NO

COMPONENT MASS%

1 Density (g/cm3) 2.522 Surface Area (cm2/gm) 51403 Particle size (µm) 28.94 Color Reddish

grey

Source : Experiment Study On Bagasse Ash In Concrete By R.SRINIVASAN, K. SATHIYA

Source: Properties And Reactivity Of Sugarcane Bagasse Ash By, AJAY GOYAL, HATTORI KUNIO, OGATA HIDEHIKO, MANDULA

APPLICATION OF BAGASSE ASH

Making of floor and wall tiles Making the bricks As a mineral admixture In the light weight concrete For silica sources

ADVANTAGES

To improve the quality and reduce the cost of construction materials.

Has high silica content: 87% (Cement’s silica content: 22%).

Low specific gravity: 1.80 (Cement’s specific gravity: 3.15). Valuable pozzolonic material and its cost is similar to fly

ash. Reduces negative environmental effect and landfill volume.

Bagasse ash is very light material. Bagasse ash can be used as a farm fertilizer. Bagasse ash is also suitable for making ceramic products. Increases workability of fresh concrete. Compressive strength, tensile strength and flexure can be

increased with 10% replacement of SCBA at 28 days.

CASE STUDY Title: Experimental Study Of Bagasse Ash In Concrete.

Partially replacement in the ratio of 0%, 5%, 10%, 15%, 20% and 25% by weight of cement in concrete.

Fresh Concrete Tests: Compaction Factor Test And Slump Cone Test were undertaken.

Harden Concrete Test: Compressive Strength, Split Tensile Strength, Flexural Strength And Modulus Of Elasticity at the age of 7 and 28 days was obtained.

Materials used:

Cement: Ordinary Portland Cement Is Used.Fine Aggregates: Locally available riverbed sand is used.Specific gravity is 2.68.

Sand Conforms To Zone IICoarse Aggregates: Size Used 20mm. Specific Gravity Is

2.83.Water: Conforming To The Requirements As Per Is:456-

2009Bagasse Ash: Collected From Boiler Operating In Sakthi Sugar Factory, Satyamangalam, Tamil Nadu.

Experimental work :

180 Numbers Of Concrete Specimens Were Casted.36 Numbers : 150mm Side Cubes.108 Number : 150mm Diameter And 300mm

Long Cylinders.36 Numbers : 750mm × 150mm × 150mm Size

Prisms.Mix Design Was Done For M20 Grade Cement As Per Indian

Standards.Water Cement Ratio is 0.48.

Workability :

SAMPLEDESIGNATION

% OF SCBA WORKABILITYSlump(mm) Compaction factor

C0 0 60 0.95

N1 5 187 0.96

N2 10 200 0.96

N3 15 220 0.97

N4 20 225 0.97

N5 25 230 0.97

Strength Results Of SCBA Concrete At 7 Days

SAMPLE DESIGNATIO

N

% OF SCBA

COMPRESSIVE

STRENGTH(MPa)

SPLIT TEASILE

STRENGTH (MPa)

FLEXURAL STRENGTH

(MPa)

MODULUS OF

ELASTICITY(MPa)

BULK DENSITY(Kg/m3)

C0 0 13.80 0.693 3.63 22800 2535.30N1 5 15.83 0.970 3.35 23100 2541.23N2 10 12.33 0.90 3.19 23000 2517.52N3 15 8.79 0.70 3.04 21900 2494.81N4 20 8.30 0.65 2.75 20100 2400.01N5 25 7.55 0.42 2.30 19800 2396.04

Strength Results Of SBCA Concrete At 28 Days

SAMPLE DESIGNATIO

N

% OF SCBA

COMPRESSIVE

STRENGTH(MPa)

SPLIT TEASILE

STRENGTH (MPa)

FLEXURAL STRENGTH

(MPa)

MODULUS OF

ELASTICITY(MPa)

BULK DENSITY(Kg/m3)

C0 0 21.47 1.526 3.460 30010 2546.17N1 5 29.50 1.94 3.74 29200 2581.72N2 10 24.70 1.59 3.56 25800 2505.67N3 15 19.32 1.45 3.38 21000 2429.62N4 20 18.85 1.34 3.18 19500 2410.21N5 25 17.73 1.24 3.02 18500 24000.00

CONCLUSION The SCBA in blended concrete had significantly higher

compressive strength, higher tensile strength and higher flexural strength compare to that of the concrete without SCBA.

It is found that the cement could be advantageously replaced with SCBA up to maximum limit of 10%.

SCBA increases workability of fresh concrete, therefore use of super plasticizer is not substantial.

Density of concrete decreases with increase in SCBA content.

REFERENCES [1] POTENTIAL UTILIZATION OF SOLID WASTE (BAGASSE ASH) ;V. S. Aigbodion, S. B.

Hassan, T. Ause and G.B. Nyior ; Journal of Minerals & Materials Characterization & Engineering, Vol. 9, No.1, pp.67-77, 2010

[2] ABDOLKARIM ABBASI AND AMIN ZARGAR; Using Bagasse Ash In Concrete As Pozzolan; Middle-East Journal Of Scientific Research 13 (6): 716-719, 2013 ISSN 1990-9233

IJSRD - International Journal for Scientific Research & Development| Vol. 1, Issue 9, 2013 | ISSN (online): 2321-0613

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IS CODES [1] IS 456 -2000 “Code of Practice for Plain and Reinforced Concrete”,

Bureau of Indian Standards, New Delhi. [2] IS 10262 -1981 “IS Method of Mix Design”, Bureau of Indian

Standards, New Delhi [3] IS 516 -1959 “Methods of Tests for strength of concrete”, Bureau of

Indian Standards, New Delhi [4] IS 383 -1970 “Specifications for Coarse and Fine Aggregates from

Natural Sources for Concrete”, Bureau of Indian Standards, New Delhi.