Green concrete” refers to concrete produced by recycling concrete debris in an environmentally responsible manner. Green concrete is defined as concrete that, throughout the manufacturing process, consumes less energy and generates a lower amount of carbon dioxide than conventional concrete.

1. Presented By - Er. Ambrish Mishra

2. GREEN Concrete
(Reuse, Reduce, Recycle)

3. Contents
Introduction
What is GREEN Concrete?
Importance of GREEN Concrete
Materials used for Green Concrete
Environmental Benefits to use GREEN Concrete
Mix Design of GREEN Concrete
Green Lightweight Aggregates
Suitability of GREEN Concrete in Structures
Advantages & Disadvantages of GREEN Concrete
Improved Engineering Properties And Limitation
Conclusion

4. Introduction
 Green concrete is defined as a concrete which uses waste material as at
least one of its components, or its production process does not lead to
environmental destruction.
 It should also have high performance and life cycle
sustainability.
 Green concrete improves the three pillars of
sustainability:environmental, economic, and social impacts.
 The word green in green concrete is not just limited to
color.
 Green Concrete is the revolutionary topic in the history of concrete
industry, this was first invented in Denmark by Dr. W G in 1998.
 It is a concept of using eco-friendly materials in
concrete, to make the system more sustainable.
 It is a concept of thinking environment into concrete
considering every aspect from raw materials manufacture
over mix design to structural design, construction, and
service life.

5. What is GREEN concrete?
 Concrete which is made from concrete wastes that are eco-
friendly are called as “Green concrete”.
 Green Concrete is a term given to a concrete that has had extra
steps taken in the mix design and placement to insure a
sustainable structure and a long life cycle with a low maintenance
surface. e.g. Energy saving, CO2 emissions, waste water.
 The technology considers all phases of a concrete construction’s
life cycle, i.e. structural design, specification, manufacturing
and maintenance.
 Concrete that uses less in energy in its production and produces
less carbon dioxide than normal concrete is green concrete.

6. Importance of Green Concrete
 Waste concrete materials and uses less energy in its
production and produces less carbon dioxide than normal
concrete.
 Aggregates are the main ingredient in concrete. Due to
consistently mining the availability of aggregates have
emerged problem in recent time.
 For each ton of cement produced about 0.9 tons of carbon
dioxide is produced, CO2 is the greenhouse gas that is
responsible for global warming.
 Green concrete has greater strength and durability than the
normal concrete.
 It uses waste products directly as a partial substitute for
cement, thus saving energy consumption in production of per
unit of cement.

7. Materials used for Green Concrete
 Locally available: Construction materials, components,
and systems found locally or regionally, saving energy
and resources in transportation to the project site.
 Salvaged, re-furnished, or re-manufactured:
Includes saving a material from disposal and
renovating, repairing, restoring, or generally improving
the appearance, performance, quality, functionality, or
value of a product.
 Reusable or recyclable: Select materials that can be
easily dismantled and reused or recycled at the end of
their useful life.
Fly Ash Eco-
Cement
Fly ash
Aggregates
Glass
Aggregates
Demolition
Waste
Recycled
Concrete Agg.
Blast Furnace
Slag
Manufactured
sand
Rice Husk
Ash

8. Environmental Benefits to use Green Concrete
Lasts Longer:
 Green concrete gains strength faster and has a lower rate of
shrinkage than concrete made only from Portland Cement.
 It can withstand temperatures of up to 2400°F.
 Has a greater resistance to corrosion.
Reduces Energy Consumption:
 Use less Portland cement and more fly ash when mixing concrete, then
it will use less energy.
 Building constructed from it is more resistant to temperature
changes, thus saving heating and cooling costs.
Reduces Carbon Dioxide Emissions :
 Manufacturing of green concrete releases up to 80% fewer Carbon
Dioxide emissions.
Uses Industrial Waste
 Green concrete uses anywhere from 25 to 100 percent fly
ash.

9. Mix Design of GREEN Concrete
 The concrete mix design method for green concrete is similar to
conventional concrete.
 For achieving an impervious or dense concrete then all voids should be
packed with smaller particles of the next type of material.
 The ingredients used in this concrete contains large voids.
 The cement and aggregates used in this concrete must pack
themselves in such a manner that they occupy minimum volume or
giving the minimum number of voids in concrete.

10. Green Lightweight Aggregates
 Synthetic lightweight aggregate produced from environmental waste is a viable new source of
structural aggregate material.
 Uses of structural grade lightweight concrete reduce considerably the self-load of a structure
and permit larger precast units to be handled.
 Water absorption of the green lightweight aggregate is large but the crushing strength of the
resulting concrete can be high.
 The 28-day cube compressive strength of the resulting lightweight aggregate concrete with
density of 1590 kg/m3 and respective strength of 34 MPa.M

11.  Suitability of GREEN Concrete in Structures
 Reduce the dead weight of a facade from 5 tons to about
3.5 tons.
 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.
 Speed of construction, shorten overall construction
period.

12. Advantages & Disadvantages of GREEN Concrete
ADVANTAGES
 Enhanced cohesion so user friendly - easier to
place, compact & finish concrete.
 It uses reused or recycled material in concrete.
 Flexural and compressive strength is equal to
conventional concrete.
 Its mix design is easier for handling.
 It requires less repair and maintenance.
 Reduces the dead weight of the structure.
 This concrete has good thermal and fire
resistance.
 It reduces environmental pollution.
 It is economical as compared to conventional
concrete.
 Reduces the overall consumption of cement.
 Its compressive strength is less than
conventional concrete
 The effect of creep and shrinkage is more than
conventional concrete.
 Its flexural strength is less than conventional
concrete.
 Water absorption is more than conventional
concrete.
 Life than structure as compared to conventional
concrete
DISADVANTAGES

13. Improved Engineering Properties And Limitation
 Mix can result in a reduced paste volume within the concrete
structure resulting in a higher level of protection against
concrete deterioration.
 Higher strength per kilogram of cement
 Increased durability & lower permeability
 More aggregates typically mean higher Modulus of elasticity.
Improved Engineering Properties
Limitation
 By using stainless steel, 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.

14. Conclusion
 Green concrete having reduced environmental impact with
reduction of the concrete industries co2 commissions by 30%.
 Green concrete consumes less energy and becomes economical.
 Green concrete is having good thermal and fire resistant.
 Green concrete was cost effective and environmentally
friendly.
 It helped to reduce mining of river sand.
 it helps to reduce carbon emissions that were generated from
manufacturing cement and crushing of aggregates.
 Overall it can be concluded that green concrete help towards
promotion of sustainable built environment.

15. THANK YOU
SUBMITTED BY :- AMBRISH MISHRA