Seminar
On
Green Concrete
Content
• Introduction
• Why Green Concrete?
• What is GREEN concrete?
• Features of Green Concrete
• Materials for Green Concrete
• Environmental Benefits to using Green Concrete
• Production OF GREEN Concrete
• Green lightweight aggregates
• Suitability OF GREEN Concrete IN Structures
• Advantages
• Improved engineering properties
• Limitation
• Scope IN India
• Conclusion
• References
INTRODUCTION
• The concrete is made with concrete wastes which are eco-
friendly so called as Green concrete.
• The other name for green concrete is resource saving
structures with reduced environmental impact for e.g. Energy
saving, co2 emissions, waste water.
• Green concrete is a revolutionary topic in the history of
concrete industry.
Why Green Concrete?
• Huge impact on sustainability
• Most widely used material on Earth
• 30% of all materials flows on the planet
• 70% of all materials flows in the built environment.
• > 2.1 billion tonnes per annum.
• >15 billion tonnes poured each year.
• Over 2 tonnes per person per annum
What is GREEN concrete?
• Most people associate GREEN concrete with concrete that is
colored with pigment.
• However, it is also referred which has not yet hardened. But
in the context of this topic, green concrete is taken to mean
environmentally friendly concrete.
• This means concrete that uses less energy in its production &
produces less carbon dioxide than normal concrete is green
concrete.
Features of Green Concrete
• Cement
• Aggregate
• Resources
Materials 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.
Environmental Benefits to using Green
Concrete
• Lasts Longer
• Uses Industrial Waste
• Reduces Energy Consumption
• Reduces CO2 Emissions
PRODUCTION OF GREEN CONCRETE
• Concrete with inorganic residual products. Ceramic wastes used
as green aggregates. By replacing cement with fly ash, micro
silica in larger amounts.
• To develop new green cements and binding materials (i.e. by
increasing the use of alternative raw materials and alternative
fuels, and by developing/improving cement with low energy
consumption).
Green lightweight aggregates
• Synthetic lightweight aggregate produced from
environmental waste is a viable new source of structural
aggregate material.
• The 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 aggregate is large but the
crushing strength of the resulting concrete can be high.
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.
ADVANTAGES
• 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.
Improved engineering properties
• 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.
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.
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 industries having
problem to dispose wastes.
• Also having reduced environmental impact with reduction in
CO2 emission.
CONCLUSION
• Green concrete having reduced environmental impact with
reduction of the concrete industries co2 commissions by 30%.
Green concrete is having good thermal and fire resistant.
• In this concrete recycling use of waste material such as ceramic
wastes, aggregates, so increased concrete industry use of waste
products by 20%. Hence green concrete consumes less energy and
becomes economical.
• So definitely use of concrete product like green concrete in future
will not only reduce the emission of co2 in environment and
environmental impact but also economical to produce.
References
• www.google.com
• www.wikipedia.com
• www.studymafia.org
Thank You
