Presented in the International Conference on Sustainable Materials & Structures for Civil Infrastructure organised by Rajiv Gandhi Proudyogiki Vishwavidyalaya(RGPV) on 14-15th March,2019 at UIT-RGPV Senate Hall.The international conference was organised under 3rd phase of (Technical Education Quality Improvement Programme(TEQIP-III) in association with MP Council of Science & Technology,ICI-MP Chapter,Indian Green Building Council-MP Chapter,AIMIL & Mycement.

1. A COMPATIBILITY STUDY OF
ORDINARY PORTLAND CEMENT AND
FLY-ASH BASED CEMENT WITH NANO-
SILICA
Paper ID: CE0001
Mainak Ghosal1, 2, 4
, Arun Kr Chakraborty3
1
Research Scholar, Indian Institute of Engineering Science & Technology, Shibpur
2
Assistant Professor, Private Engineering College, Kalyani, Nadia, Bengal
3
Associate Professor, Department of Civil Engineering, Indian Institute of Engineering
Science & Technology, Shibpur, Howrah-711103
4
Jt.Secretray, Coal Ash Institute of India, Kolkata
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2. 14-15th March,2019

3. INTRODUCTION
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4. CONCEPTS- Coal Ash
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5. CONCEPTS-Nano Silica
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6. Nano Silica from Rice
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7. What is Paddy Burning ?
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8. Nano Silica in PORE-FILLING
effects
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9. Nano Silica in POZZOLONIC
effects
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10. Nano Silica in NUCLEATION
effects
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11. 14-15th March,2019

12. Size DECREASES 
Mechanical Properties & Durability INCREASES
INCREASES
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13. NanostructuredNanostructured MaterialsMaterials
Materials at the
Nanoscale brings
different laws of
Physics into play
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14. Nanomaterials Used – Nano
Silica
Item Description
Active Nano Content 35-40%
Particle Size 5-40 nm
pH (20°C) 9-10
Specific Gravity 1.08-1.32
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15. 14-15th March,2019

16. MINERALOGICAL /MORPHOLOGICAL STUDY
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17. XRD image of Nanomaterials
used
RECORDING
2θ
2θ
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18. 14-15th March,2019
Plain Cement Composite
Nano Cement Composite

19. Mortar Preparation for Mechanical Testing
Nano-
Silica
added
here
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20. Mechanical Testing of Cement Mortar
Samples
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21. 14-15th March,2019

22. % Nano
additions in
Cement
7 Days
Strength
(% incr.)
28 Days
Strength
(% incr.)
90 Days
Strength
(% incr.)
180 Days
Strength
(% incr.)
365 Days
Strength
(% incr.)
0% nS
21.08 MPa
(--)
31.89MPa
(--)
31.20MPa
(--)
30.01MPa
(--)
30.01MPa
(---)
0.5% nS
23.85MPa
(13.14% )
35.1MPa
(11.35% )
41.30MPa
(32. 37% )
27.47MPa
(-9.24% )
26.76MPa
(-4.29%)
0.75% nS
27.73MPa
(31.54%)
42.27MPa
(32.55%)
49.85MPa
(59.78%)
32.52MPa
(8.36%)
31.5MPa
(4.96%)
1.0% nS
25.07MPa
(18.93%)
37.36MPa
(17.15%)
42.98MPa
(37.76%)
33.68MPa
(12.23%)
32.41MPa
(8.0%)
1.25% nS
23.17MPa
(9.91%)
30.85MPa
(-3.26%)
39.45MPa
(26.44%)
35.24MPa
(17.43%)
31.3MPa
(4.29%)
1.50% nS 23.81MPa
(12.95%)
37.79MPa
(18.50%)
33.42MPa
(7.12%)
31.23MPa
(4.07%)
29.12 MPa
(-2.96%)14-15th March,2019

23. % Nano
additions in
PPC
7 Days
Strength
(% incr.)
28 Days
Strength
(% incr.)
90 Days
Strength
(% incr.)
180 Days
Strength
(% incr.)
365 Days
Strength
(% incr.)
0% nS
11.36 MPa
(--)
22.44 MPa
(--)
25.96 MPa
(--)
27.08 MPa
(--)
23.52MPa
(---)
0.5% nS
8.93MPa
(-21.39%)
27.16 MPa
(21.03%)
22.45 MPa
(-13.52%)
26.11MPa
(-3.58%)
21.26MPa
(9.61%)
0.75% nS
23.66MPa
(108.27%)
27.45 MPa
(22.32%)
33.17 MPa
(27.77%)
27.0 MPa
(-0.30%)
35.54 MPa
(51.11%)
1.0% nS
25.07MPa
(18.93%)
37.36MPa
(17.15%)
42.98MPa
(37.76%)
33.68MPa
(12.23%)
32.41MPa
(8.0%)
1.25% nS
23.17MPa
(9.91%)
30.85MPa
(-3.26%)
39.45MPa
(26.44%)
35.24MPa
(17.43%)
31.3MPa
(4.29%)
1.50% nS 23.81MPa
(12.95%)
37.79MPa
(18.50%)
33.42MPa
(7.12%)
31.23MPa
(4.07%)
29.12MPa
(-2.96%)
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24. OPTIMIZATIONS for Nano
Materials are nS=0.75% for OPC &
for PPC
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25. For long term, the presence of Fly
ash enhances DURABILITY &
consistency in optimization results
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26. CEMENT HYDRATION
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https://www.sciencedirect.com/t
opics/chemistry/hydration-
kinetics

27. 14-15th March,2019

28. OPTIMIZATION OF NANO-MATERIALS in
OPC
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29. 14-15th March,2019

30. OPTIMIZATION OF NANO-MATERIALS in PPC
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31. 14-15th March,2019

32. Further research on micro structural
studies like XRD,SEM,AFM,TEM,STM are
necessary for characterization of nano
materials in concrete.
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33. 14-15th March,2019