Bagasse ash as a partial replacement to cement. This replacement can improve the properties of cement as well as, it reduces the effects over the environment.

1. BAGASSE ASH AS
REPLACEMENT FOR CEMENT IN
CONCRETE
GUIDED BY :
HANNAH S MATTAM
ASST. PROFESSOR
DEPT. OF CIVIL ENGINEERING
PRESENTED BY :
NIBY JOSE
S7 CE
ROLL NO:49

2. INTRODUCTION
Cement –widely used construction material
Due to increase in demand
Researchers and scientist are in search of
alternative binder(eco friendly)
2Bagasse ash as replacement for cement in concrete

3. SUGARCANE BAGASSE ASH (SCBA)
Agro waste from sugar cane industry
Bagasse-fibrous waste after extraction of
juice
Exhibits pozzolanic property
3Bagasse ash as replacement for cement in concrete

4. PRODUCTION OF BAGASSE ASH
Raw sugarcane-paddy field
After extraction of juice-dried in open
air
Burned in dry air
4Bagasse ash as replacement for cement in concrete

5. Schematic representation of production of bagasse ash
5Bagasse ash as replacement for cement in concrete

6. Bagasse Bagass
e ash
Fine Bagasse
ash
6Bagasse ash as replacement for cement in concrete
Pictorial representation of bagasse, bagasse ash and fine bagasse ash
PC: Google Images

7. PROPERTIES OF BAGASSE ASH
Physical properties of cement and Bagasse
ash
7Bagasse ash as replacement for cement in concrete
Material Density
(kg/m³)
Specific
gravity
Fineness
passing
45µm
Specific
surface
area
(m³/kg)
Mean
grain
size
(µm)
Cement 1.15 3 82 300 21
Bagasse
ash
0.4 1.8 95 900 5.1

8. Observations
The density is low
• Hence low weight concrete is obtained
Specific surface area is high
• Therefore adsorption, reaction on
surface etc are improved
8Bagasse ash as replacement for cement in concrete

9. Chemical properties of HPC* and
Bagasse ash
9Bagasse ash as replacement for cement in concrete
Material SiO2 Al2O3 Fe2O3 CaO MgO Na2O K2O S3O LOI
Cement 21.55 5.69 3.39 64.25 0.85 0.33 0.59 2.47 1.80
Bagasse
ash
87.40 3.6 4.95 2.56 0.69 0.15 0.47 0.11 8.25
*HPC- High perfomance concrete

10. The percentage of silica is high-
responsible for pozzolanic property
Silica reacts with components of cement
during hydration imparts additional
properties-Chloride resistance,Corrosion
resistance etc
10Bagasse ash as replacement for cement in concrete

11. 11
Experimental study
Materials used
Cement (OPC)
Fine aggregate
(passing 4.75mm and
retained in150microns)
Coarse aggregate (20mm)
Bagasse ash as replacement for cement in concrete

12. Water (potable drinking water)
Sugarcane bagasse ash
0%,5%,10%15% and 20%
replacement by weight of cement
12Bagasse ash as replacement for cement in concrete

13. Mix design
M25 grade
Water cement ratio-0.48
Mixing
Mixed in mixer machine thoroughly –
consistency is achieved
13Bagasse ash as replacement for cement in concrete

14. Test on fresh concrete
14Bagasse ash as replacement for cement in concrete
Sample
designation
% of SBCA Workability
Slump(mm) Compaction
factor
C0* 0 60 .95
N1 5 187 .96
N2 10 200 .96
N3 15 220 .97
N4 20 225 .97
* CO-Control Specimen

15. Workability increases as % of SCBA
increases
Therefore use of super plasticizer is not
essential
1
5Bagasse ash as replacement for cement in concrete

16. Test on Hardened Concrete
Specimens
150mmx150mmx150mm cubes
(compressive strength)
150mmx300mm cylinder(split tensile
strength)
750mmx150mmx150mm prism(flexural
strength)
16Bagasse ash as replacement for cement in concrete

17. Casting
Before casting oil is spreaded on inner
surface of mould
Concrete is poured and
compacted(using vibrator)
Top surface is finished by trowel
17Bagasse ash as replacement for cement in concrete

18. Curing
Demoulded after 24 hours
Cured under water
Testing
The compressive, flexural and split
tensile strength is tested
18Bagasse ash as replacement for cement in concrete

19. Compressive strength
19Bagasse ash as replacement for cement in concrete
% of
SBCA
7 Days
(Mpa)
28 Days
(Mpa)
56 Days
(Mpa)
90Days
(Mpa)
0 19.84 31.85 34.51 37.62
5 22.07 32.88 36.58 40.73
10 24.99 35.04 40.44 44.14
15 17.92 24.58 30.51 34.21
20 15.82 23.25 27.25 30.36

20. 20Bagasse ash as replacement for cement in concrete
Compressive strength of M25 grade concrete at different ages

21. Split tensile strength
21Bagasse ash as replacement for cement in concrete
% of
SBCA
7Days
(Mpa)
28Days
(Mpa)
56Days
(Mpa)
90Days
(Mpa)
0 1.5 2.44 2.93 3.48
5 2.07 3.06 3.48 4.05
10 2.49 3.48 4.05 4.61
15 1.13 1.69 2.16 2.63
20 0.8 1.36 1.79 2.16

22. 22Bagasse ash as replacement for cement in concrete
Split tensile strength of M25 grade concrete at different ages

23. Flexural strength
23Bagasse ash as replacement for cement in concrete
% of
SBCA
7Days
(Mpa)
28Days
(Mpa)
56Days
(Mpa)
90Days
(Mpa)
0 7.08 9.52 10.41 10.94
5 8.25 10.35 10.86 11.16
10 9.43 10.71 11.48 11.92
15 6.55 8.98 9.42 10.16
20 5.94 7.87 8.85 9.36

24. 24Bagasse ash as replacement for cement in concrete
Flexural strength of M25 grade concrete at different ages

25. Test results
The compressive strength ,split tensile
strength and flexural strength increases by
increasing % of SCBA up to 10%
Beyond 10% the strength decreases
This is due to quantity of SCBA is higher
than the amount required
25Bagasse ash as replacement for cement in concrete

26. It combines with liberated lime
Leading to excess silica leaching out
Causes deficiency in strength
26Bagasse ash as replacement for cement in concrete

27. Effect of elevated temperature
The properties of concrete changes –
exposed to elevated temperature
Bagasse partially replaced - exposed to
different elevated temperature
(2000C,4000C,6000C,8000C)
For one hour
27Bagasse ash as replacement for cement in concrete

28. Immediately cooled with water
At 2000C concrete had better
compressive strength than room
temperature
It is due to micro filling ability and
pozzolanic properties of SCBA
28Bagasse ash as replacement for cement in concrete

29. Sudden decrease in strength at 8000C and
6000C
Damage occurs to calcium silicate
hydrate (CSH strength contributing
compound)
29Bagasse ash as replacement for cement in concrete

30. Conclusion
 Density is less therefore light weight
concrete can be obtained
Workability increases
Use of super plasticizers is not essential
30Bagasse ash as replacement for cement in concrete

31. Compressive ,flexural, split tensile
strength increases (10% replacement)
Compressive strength increases – upto
2000C elevated temperature
31Bagasse ash as replacement for cement in concrete

32. Bagasse ash as replacement for cement in concrete 32
REFERENCE
1.Mrs.U.R.Kawade, Mr.V.R.Rathi, Miss Vaishali D.
Girge, “Effect Of Use Of Bagasse Ash On Strength Of
Concrete”, International journal of innovative
research in science, engineering and technology 2
(2013), 2997-3000.
2.Shruthi H R ,Dr.H Eramma ,Yashwanth M K
,Keerthi gowda B S “ A study on baggase ash replaced
plain cement concrete”, International Journal of
Advanced Technology in Engineering and Science
www.ijates.com Volume No.02, Issue No. 08, August
2014 ISSN (online): 2348 – 7550

33. Bagasse ash as replacement for cement in concrete 33
3. A.D.V.S. Siva Kumar , K.V.G.D. Balaji, T. Santhosh
kumar“Behavior of sugarcane baggase ash concrete exposed to
elevated temprature”International Journal of Advance Research
In Science And Engineering http://www.ijarse.com IJARSE, Vol.
No.3, Issue No.7, July 2014 ISSN-2319-8354(E)
4. T. S. Abdulkadir, . D. O. Oyejobi, . A. A. Lawal “Evaluation
Of Sugarcane Bagasse Ash As A Replacement For Cement In
Concrete Works” Acta Tehnica Corviniensis-Bullethin Of
Engineering Tome Vii (2014) Fascicule 3 Issn:2067-3890
5. Mrs.U.R.Kawade1, Mr.V.R.Rathi2, Miss Vaishali D.
Girge3“Effect of use of Bagasse Ash on Strength of
Concrete[International Journal of Innovative Research in
Science, Engineering and Technology Vol. 2, Issue 7, July 2013
ISSN: 2319-87532014] Fascicule 3 [July – September]

34. THANK YOU