green concrete

1. GREEN CONCRETE
PRESENTED BY
P.NAIMISHA
P.V.SAI LAKSHMI
N.PRATHYUSHA

2. CONTENTS
1) What is Green Concrete?
2) Why Green Concrete
3) Technique followed by Green Concrete
4) Requirements of Green Concrete
5) Materials for Green Concrete
6) Cementious Materials-Fly ash
7) Mix Design
8) Suitability of Green Concrete in structures
9) Applications of Green Concrete
10)Advantages of Green Concrete
11)conclusion
12)References

3. What is Green Concrete?
• Green Concrete is environmentally friendly concrete
• Concrete that uses less in energy in its production and produces less
carbon dioxide than normal concrete is green concrete

4. NEED OF GREEN CONCRETE
• The main ingredient in concrete is cement and it consists of lime stone
• During manufacture of cement its ingredients
are heated to about 800 c-10000c
• During this process carbon dioxide is released
• Approximately 1 kg of concrete releases
about 900 gms of carbon dioxide in to the atmosphere
• Therefore green concrete came in to existence to reduce the emission
of carbon dioxide

5. TECHNIQUE
It should follow the technique of reduce-reuse-recycle
 Reduce the green house gas emission
 Reduce the use of natural resources such as limestone , shale , clay and
natural river sand
 Use of waste materials
OBJECTIVE
 The main objective is sustainable development without destruction of
natural resources

6. REQUIREMENTS OF GREEN CONCRETE
• The concrete should have the following requirements to say it as a
“GREEN CONCRETE”
Optimizes use of available materials
Better performance
Enhanced cohesion workability/consistency
Reduced shrinkage and creep
Durability-better service life of concrete
Reduced carbon foot print
No increase in cost
LEED certification

7. MATERIALS FOR GREEN CONCRTE
The materials which are preferable to use in the Green Concrete are
 Locally available
 Salvaged , refurnished or remanufactured
 Reusable or recyclable

8. MATERIALS FOR GREEN CONCRETE
• Coarse aggregates are

9. MATERIALS FOR GREEN CONCRETE
• Fine aggregates are

10. CEMENTIOUS MATERIALS
• FLY ASH
fly ash is a byproduct produced during the operation of
coal fired plants. The finely divided particles from the exhaust gases are
collected in the electro static precipators. These particles are called fly ash
Utilization of fly ash as a part replacement
of cement or mineral admixture in concrete
saves on cement and hence the emission of
carbon dioxide

11. ADVANTAGES OF FLYASH
I. Use of good quality fly ash in concrete has shown remarkable
improvement in durability of concrete ,especially in aggressive
environment
II. Higher ultimate strength
III. Increased durability
IV. Improved workability
V. Reduced bleeding
VI. Reduced shrinkage
VII.Increased resistance to alkali - silica reactivity

12. MIX DESIGN
• The concrete mix design method for such concrete
is the same as for conventional concrete. However,
the constituent materials shown in figure
must pack themselves in such a manner that they
occupy minimum volume or give minimum voids in
concrete.
In figure all individual material has large voids. For getting a dense or
impervious green concrete, all such voids must be packed with smaller
particles of next type of material.

13. SUITABILITY OF GREEN CONCRETE IN STRUCTURES
The factors which enhance the suitability of green concrete in structures
 Reduce the dead weight of the structure
Good thermal and fire resistance sound insulation than the traditional
granite rock
Reduction of concrete industry’s carbon dioxide emission by 30%
Increased concrete industry’s use of waste products by 20%
No environmental pollution and sustainable development
Green concrete requires less maintenance and repairs

14. APPLICATIONS OF GREEN CONCRETE

15. ADVANTAGES
• Reduction in creep and shrinkage
• It uses the local and recycled materials in concrete
• The heat of hydration of green concrete is significantly lower than the
traditional concrete
• Compressive strength and flexural behavior is fairly equal to that of
conventional concrete
• Since these are optimized mix designs it is easier to handling

16. SCOPE IN INDIA
• Green concrete is a revolutionary topic in the history of India
• As green concrete is made with industrial wastes it does take less time
to come to India since industries are having the problem with waste
disposal
• Also reducing the impact on environment

17. CONCLUSION

18. REFERENCES
• Indian concrete journal volume 77-januraary-2003-no-1 green
concrete technology by r.m.swamy on page-878
• Green concrete using industrial wastes. proceedings, national
conference on advances in building materials, Vellore institute of
technology, Vellore
• Devadas,manoharan.p.senthamarai.R.M .concrete using ceramic
insulators scraps as coarse aggregates ,proceedings,6th international
conferences on concrete
• Galvind,munchpetersen,green concrete structural concrete

19. • WEBSITES
• http://www.greenconcrete.dk/
• http://www.diamondbide ware hoses.com/green concrete.html.