Golden Jubilee of Goa Engineering College's International Conference on Advances in Concrete Technology, Materials and Construction Practices
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The document discusses the application of nanotechnology in construction, emphasizing its potential to reduce water demand and enhance properties of cement materials. It presents research findings on the effects of various nano-additions on compressive strength over time, highlighting optimal percentages for different types of cement. The conclusion suggests further studies are needed for the characterization of nano materials in cement concrete.
![Prof.Mainak Ghosal
[MIE,MISC,MIAStruct.E,FIV]
PRESENTER
&
Prof.Arun Kr. Chakraborty
Dept of Civil Engineering,IIEST,Shibpur,India.
(Formerly Bengal Engineering & Science University)
22nd -- 24th June,2016](https://image.slidesharecdn.com/goaconference-180317120429/85/Golden-Jubilee-of-Goa-Engineering-College-s-International-Conference-on-Advances-in-Concrete-Technology-Materials-and-Construction-Practices-1-320.jpg)
![Has written over 150 Technical Reports
Has Authored over 15 Technical Papers
Formerly Asst. Engineer,PHED,Gov. of
W.B
Adjunct Professor,JIS College of
Engineering
Consultant/Registered Valuer,CBDT,Gov.
of India
Research Scholar, Dep't of Civil
Engg.,IIEST,Shibpur
Is a Life Member of
* Indian Science Congress
* Institution of Engineers[I]
* Indian Concrete Institute
* Indian Association of Structural Engineers
* Institution of Valuers
* Consulting Engineers Association of India
& Several other Organizations](https://image.slidesharecdn.com/goaconference-180317120429/85/Golden-Jubilee-of-Goa-Engineering-College-s-International-Conference-on-Advances-in-Concrete-Technology-Materials-and-Construction-Practices-2-320.jpg)
![SOURCES OF
NANO MATERIALS
1.NANO SILICA[Mean Dia~35 nm]-
1st nano-product that replaced micro-silica
No Admixtures/Plasticizers required
2.CARBON NANOTUBES[Mean Dia=20-40nm]-
Crack controlling
SHM
3. NANO TITANIUM DI-OXIDE[Mean Dia=30-40nm]-
Self cleaning properties](https://image.slidesharecdn.com/goaconference-180317120429/85/Golden-Jubilee-of-Goa-Engineering-College-s-International-Conference-on-Advances-in-Concrete-Technology-Materials-and-Construction-Practices-7-320.jpg)
![SCOPE OF WORK:-
The AIM is to Investigate the
INFLUENCES of Nano-
Additions on Ordinary Cement
& BLENDED Cements
Testing of Nano-materials (nS,
CNT & n-TiO2) for7, 28,90,180 &
365 days compressive strength
for OPC/PPC/PSC
Mortar[Cement:Sand=1:3] at
OPTIMIZED additions](https://image.slidesharecdn.com/goaconference-180317120429/85/Golden-Jubilee-of-Goa-Engineering-College-s-International-Conference-on-Advances-in-Concrete-Technology-Materials-and-Construction-Practices-10-320.jpg)
![DISCUSSIONS &
CONCLUSIONS
Nano-Additions never resulted in any
appreciable change in PHYSICAL
CHARACTERISTICS of Cement
COLOUR,SHAPE,SIZE,WEIGHT,DENSITY
Nano-Additions in PCE for
CNT/TiO2 REDUCED THE SETTING
TIME[From 3 Days to 1.5 Day]
OPTIMIZATIONS for Nano
Materials in Ordinary Cement
Mortar -nS, CNT & TiO2 are
0.75%,0.02% & 1% w.r.to Cement
weight at 28 Days
Results indicate that for OPC,
slight increase of Ns/CNT dose
from the optimized one gives an
overall increase in strength in
Long Term
For PPC & PSC optimizations are
0.75% nS & 0.5% nS which remains
fixed for both Short & Long Terms
Further research on MICRO
STRUCTURAL studies are necessary
for Characterization of Nano
Materials -XRD,SEM-EDS,TEM,AFM
in Cement Concrete](https://image.slidesharecdn.com/goaconference-180317120429/85/Golden-Jubilee-of-Goa-Engineering-College-s-International-Conference-on-Advances-in-Concrete-Technology-Materials-and-Construction-Practices-15-320.jpg)
Golden Jubilee of Goa Engineering College's International Conference on Advances in Concrete Technology, Materials and Construction Practices
- 1. Prof.Mainak Ghosal [MIE,MISC,MIAStruct.E,FIV] PRESENTER & Prof.Arun Kr. Chakraborty Dept of Civil Engineering,IIEST,Shibpur,India. (Formerly Bengal Engineering & Science University) 22nd -- 24th June,2016
- 2. Has written over 150 Technical Reports Has Authored over 15 Technical Papers Formerly Asst. Engineer,PHED,Gov. of W.B Adjunct Professor,JIS College of Engineering Consultant/Registered Valuer,CBDT,Gov. of India Research Scholar, Dep't of Civil Engg.,IIEST,Shibpur Is a Life Member of * Indian Science Congress * Institution of Engineers[I] * Indian Concrete Institute * Indian Association of Structural Engineers * Institution of Valuers * Consulting Engineers Association of India & Several other Organizations
- 3. The construction industry was the only industry to identify nanotechnology as a promising emerging technology in the UK Delphi Survey in the early 1990s Application of Nanotechnology in Construction, Materials and Structures, 37, 649 (2004), Springer By 2030 Indias Population is expected to cross 1.5 billion mark - surpass China in terms of Population.means a 800 million square meters of residential & commercial space needs to be built annually up to 2030 Death in every minute due to Water Scarcity/related disease. Concrete is next to Water in Consumption. Nano Addition decreases water Demand
- 4. BEFORE NANO-TECHNOLOGY AFTER NANO-TECHNOLOGY
- 6. FRESH PROPERTIES HARDENED PROPERTIES
- 7. SOURCES OF NANO MATERIALS 1.NANO SILICA[Mean Dia~35 nm]- 1st nano-product that replaced micro-silica No Admixtures/Plasticizers required 2.CARBON NANOTUBES[Mean Dia=20-40nm]- Crack controlling SHM 3. NANO TITANIUM DI-OXIDE[Mean Dia=30-40nm]- Self cleaning properties
- 9. Improves the materials bulk properties. To obtain thinner final elements(more Floor Space) and quicker setting time. Brings down Weight & Cost Effective. Allows For Rationalization Of Design. Lowered levels of environmental contamination. Improved Carbon Ratings. Conventional Glass Self Cleaning Glass
- 10. SCOPE OF WORK:- The AIM is to Investigate the INFLUENCES of Nano- Additions on Ordinary Cement & BLENDED Cements Testing of Nano-materials (nS, CNT & n-TiO2) for7, 28,90,180 & 365 days compressive strength for OPC/PPC/PSC Mortar[Cement:Sand=1:3] at OPTIMIZED additions
- 11. % Nano additions in OPCement 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%) 29.12MPa (-2.96%)
- 12. % 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%) 35.54MPa (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%)
- 13. % Nano additions in PSC 7 Days Strength (% incr.) 28 Days Strength (% incr.) 90 Days Strength (% incr.) 180 Days Strength (% incr.) 365 Days Strength (% incr.) 0% nS 22.89 MPa (--) 28.93 MPa (--) 26.79 MPa (--) 19.95 MPa (--) 32.65MPa (---) 0.5% nS 22.81MPa (-0.35%) 30.56MPa (18.93%) 26.31MPa (5.63%) 24.63MPa (23.46%) 41.24 MPa (26.31%) 0.75% nS 19.45 MPa (-15.02%) 27.56 MPa (-4.73%) 22.89 MPa (14.55%) 20.63MPa (3.41%) 23.47MPa (-28.11%) 1.0% nS 21.54MPa (-5.89%) 29.88 MPa (3.28%) 36.22 MPa (35.20%) 23.48MPa (17.69%) 18.11MPa (-44.53%) 1.25% nS 19.62 MPa (-14.28%) 18.62 MPa (-39.63%) 22.84 MPa (-14.74%) 14.74 MPa (-26.12%) 23.81MPa (-27.08%) 1.50% nS 14.39MPa (-37.13%) 14.80 MPa (-48.83%) 18.74 MPa (-42.96%) 14.86 MPa (-25.51%) 16.84 MPa (-48.42%)
- 14. % Nano additions in OPCement 7 Days Compressiv e Str (% incr.) 28 Days Compressive Str (% incr.) 90 Days Compressive Str (% incr.) 180 Days Compressive Str (% incr.) 365 Days Strength (% incr.) 0% CNT/TiO2 21.08MPa (--) 31.89MPa (--) 31.20MPa (--) 30.01MPa (--) 30.01MPa (--) 0.02%CNT 17.69MPa (-16.08%) 43.75MPa (37.19%) 35.59MPa (14.07%) 30.89MPa (0%) 28.53MPa (-4.93%) 0.05%CNT 27.19MPa (28.98%) 34.88MPa (9.37%) 31.85MPa (2.08%) 38.55MPa (3%) 41.69MPa (38.92%) 0.1%CNT 21.69MPa (2.89%) 24.83MPa (-22.14%) 31.50MPa (0.96%) 30.16MPa (0%) 50.78MPa (69.21%) 1%TiO2 25.24MPa (19.73%) 36.71MPa (12.59%) 35.92MPa (15.13%) 33.42MPa (11.36%) 41.16MPa (37.15%) 2.5%TiO2 20.34MPa (-3.51%) 34.97MPa (9.58%) 37.80MPa (21.15%) 40.95MPa (36.45%) 28.16MPa (-6.16%)
- 15. DISCUSSIONS & CONCLUSIONS Nano-Additions never resulted in any appreciable change in PHYSICAL CHARACTERISTICS of Cement COLOUR,SHAPE,SIZE,WEIGHT,DENSITY Nano-Additions in PCE for CNT/TiO2 REDUCED THE SETTING TIME[From 3 Days to 1.5 Day] OPTIMIZATIONS for Nano Materials in Ordinary Cement Mortar -nS, CNT & TiO2 are 0.75%,0.02% & 1% w.r.to Cement weight at 28 Days Results indicate that for OPC, slight increase of Ns/CNT dose from the optimized one gives an overall increase in strength in Long Term For PPC & PSC optimizations are 0.75% nS & 0.5% nS which remains fixed for both Short & Long Terms Further research on MICRO STRUCTURAL studies are necessary for Characterization of Nano Materials -XRD,SEM-EDS,TEM,AFM in Cement Concrete