Green concrete is environmental friendly concrete Concrete that uses less energy in its production and produces less carbon dioxide than normal concrete is green concrete

1. By
SATHISHKUMAR G
(sathishsak111@gmail.com)

2. CONTENT
1.WHAT IS GREEN CONCRETE
2.WHERE DOES THE CARBON DIOXIDE COME FROM
IN CONCRETE
3.FEATURES OF GREEN CONCRETE
4.MATERIALS FOR GREEN CONCRETE
5.CEMENTITIOUS MATERIALS –FLY ASH
6.ADVANTAGES OF GOOD CONCRETE
7.LIMITATION OF GREEN CONCRETE
8.SUITABILITY OF GREEN CONCRETE IN STRUCTURES
9.SCOPE IN INDIA

3. WHAT IS GREEN CONCRETE?

4. WHAT IS GREEN CONCRETE
• Green concrete is
environmental
friendly concrete
• Concrete that uses
less energy in its
production and
produces less carbon
dioxide than normal
concrete is green
concrete

5. WHERE DOES THE CARBON
DIOXIDE COME
FROM IN CONCRETE
i) Cement:
most of carbon dioxide in concrete is from the
cement manufacturing process. A typical cubic meter of
concrete contains about 10% cement by weight. The reaction
in the process of cement manufacture is:
CaCO3=CaO+CO2
ii)Aggregate:
use of virgin aggregates contributes about 1%
of all carbon dioxide emissions from a typical cubic meter of
concrete. Therefore, the use of altimate aggregate is desirable .
The use of local and recycled aggregates is desirable as it can
reduce transportation and fuel cost and support sustainable
development

6. FEATURES OF GREEN
CONCRETE
The concrete which can fall in the
category of green must have the
following characteristics
Optimizes use of available
materials
Better performance
Enhanced cohesion workability/
consistancy
Reduced shrinkage/ creep
Durability –better service life
of concrete
Reduced carbon footprint
No increase in cost
LEED india certification

7. MATERIALS FOR GREEN
CONCRETE
Green construction materials
are composed of renewable , rather
than non renewable resources.
Green materials are
environmentally responsible
because impacts are considered
over the life of the product.
Depending upon projects – specific
goals, green materials may involve
an evaluation of one or more of the
following criteria.
 locally available
Salvaged , re-fumished
or re- manufactured
 Reusable or recyclable

8. CEMENTITOUS
MATERIALS – FLY ASH
Fly ash is a by- product produced during the operation of coal – fired
power plants. The finely divided particles from the exhaust gases are
collected in electrostatic precipitators. These particles are called Fly ash
Advantages of using fly ash in concrete:
 Utilization of Fly ash as a part replacement of cement or as a mineral
admixture in concrete saves on cement and hence the emission of carbon
dioxide
 Use of good quality fly ash in concrete has shown remarkable improvement
in durability of concrete , especially in aggressive environment
 Some of the technical benefits of the use of fly ash in green concrete are:
a) Higher ultimate strength
b) Increased durability
c) Improved workability
d) Reduced bleeding
e) Increased resistance to alkali-silica reactivity
f) Reduced shrinkage

9. ADVANTAGES OF GREEN CONCRETE
 Optimized mix designs mean
easier handling, better
consistency and easier finishing.
 Reduction in shrinkage &creep
 Green concrete uses local and
recycled materials in concrete .
 The heat of hydration of green
concrete is significantly lower
than traditional concrete
 This result in a lower
temperature rise in large
concrete pours which is a
distinct advantage for green
concrete

10. ADVANTAGES OF GREEN
CONCTETE
a)Reduced to CO2 emissions.
b)Low production costs as waste directly
substitute the cement.
c) Save energy, emissions and waste water.
d)Helps in recycling industry wastes.
e)Reduce the consumption of cement overall.
f) Better workability.
g)Greater strength and durability than normal
concrete.
h)Compressive strength and Flexural behaviors
is fairly equal to that of the conventional
concrete.

11. LIMITATION OF GREEN CONCRETE
Argued the green concrete can be made
durable by using stainless steel
reinforcements, but the predicament is that
by using stainless steel concrete the coast of
the construction increases considerably. Even
after this, eco concrete is not as durable as
the conventional concrete. The limitation of
using eco concrete can summarized as below:
• By using stainless steel, the cost of
reinforcement increases.
• Structures constructed with green concrete
have comparatively less life than structures
with conventional concrete.
• Split tension of green concrete is less than
that of conventional concrete.

12. SUITABILITY OF GREEN
CONCRETE IN STRUCTURES
Several factors which enhances the suitability of green concrete in
structures include :
 Reduce the dead weight of a structure and reduce crane age load
;allow handling , lifting flexibility with lighter weight
 Good thermal and fire resistance ,sound insulation than the
traditional granite rock
 Improve damping resistance of building
 Reduction of the concrete industry CO2-emission by 30%
 Increased concrete industry use of waste products by 20%
 No environmental pollution and sustainable development
 Green concrete requires less maintenances and repairs
 Compressive strength behaviour of concrete with water cement
ratio is more than that of conventional concrete.
 Flexural strength of green concrete is almost equal to that of
conventional concrete

13. SCOPE IN INDIA
Green concrete is a revolutionary
topic in the history of concrete industry.
As green concrete is made with
concrete wastes it does take more time
to come in India because of industries
having problem to dispose wastes and it
also reduces the environmental impact
with reduction in CO2 emission. Use of
green concrete can help us reduce a lot
of wastage of several products.
Various non- biodegradable products
can also be used and thus avoiding the
issues of their disposels