Concrete is a composite construction material made
primarily with aggregate , cement, and water
concrete is the second most consumed entity after
water it accounts for around 5% of the world‘s total
Carbon dioxide is one of the green house gas which
is responsible for global warming
IMPACT ON ENVIRONMENT
DUE TO CONCRETE
1. Green house gas emission
4. The main ingredient in concrete is cement and it consists of
Limestone (Calcium Carbonate CaCO3)
During manufacture of cement, its ingredients are heated to
about 800 - 10000C.
During this process the Carbon Dioxide is driven off
CaCO3 CaO + CO2
Approximately 1kg of cement releases about 900gms of
Carbon Dioxide into the atmosphere.
5. Major ingredient in the production of concrete is
aggregates without aggregates it is impossible to
Aggregates are mined from the rock mines and the rate
with which concrete is produced there will be
significant reduction in naturally occurring materials.
2.Reduction in naturally occurring materials
6. 3.Disposal of construction and demolition waste
Disposal of construction and demolition waste has
become a major problem these days
According to the report of Technology, Information,
Forecasting, Assessment Council the total amount of
waste from construction industry is estimated to be 12
to 14.7 million tons per annum
Out of which 7.8 million tons are concrete and brick
Because of increasing problems of these wastes many
countries have started researches to use these materials
Green concrete means eco- friendly concrete.
concrete that uses less energy in its production &
produces less carbon dioxide than normal concrete
Optimizes use of available material
Enhanced cohesion workability / consistency
Reduced shrinkage / creep.
Durability - Better service life of concrete
Reduced carbon footprint
No increase in cost
LEED India Certification
FEATURES OF GREEN
The concrete which can fall in the category of green
must have the following characteristics.
Indoor Air Quality
Uses Industrial Waste
Reduces Energy Consumption
Reduces CO2 Emissions
ENVIRONMENTAL BENIFITS BY
USING GREEN CONCRETE
Using light weight aggregates, the density of the
concrete decreases to 300 to 1850 kg/m3
The use of lightweight concrete provides structural
efficiency and economic advantages.
It helps in reduction of the dead load, increases the
progress of the building, and lowers haulage and
relatively low thermal conductivity
LIGHT WEIGHT AGGREGATES
Structural Light Weight Aggregate Concrete is a
concrete having 28 day compressive cement strength
more than 17 MPa and 28 day air dried unit weight
not exceeding 1850 kg/m3.
The concrete may consists entirely of light weight
aggregate or a combination of light weight
aggregate and normal weight aggregates
Use of air-entrainment will greatly improve the
workability, and the tendency for bleeding in the
STRUCTURAL LIGHT WEIGHT
This cement is based on an intermediate product, clinker,
which is produced with minor additions of mineralizes to
the kiln..These mineralizes are Calcium Sulphate (CaSO4)
and Calcium Fluoride (CaF2).With the addition of these
mineralizes, the energy consumptions are reduced by 5%.
Also the CO2 emissions get reduced. It is found that there
is a 5-10% increase in 28-day strength of the cement
Reduce the dead weight of a structure and reduce
crane age load
Good thermal and fire resistance, sound insulation
than the traditional granite rock
Improve damping resistance of building.
Speed of construction, shorten overall construction
Green concrete requires less maintenance and repairs
Green concrete sometimes give better workability
than conventional concrete
SUITABILITY 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
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
ADVANTAGES OF GREEN CONCTERE
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
By using stainless steel, cost of reinforcement
Structures constructed with green concrete have
comparatively less life than structures with
Split tension of green concrete is less than that of
21. Green concrete having reduced environmental impact with
reduction of the concrete industries co2 –emissions 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’s use of
waste products by 20%.
Hence green concrete consumes less energy and becomes
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.
22. “concrete technology” – M.S.SHETTY
IOSR Journal of Mechanical and Civil Engineering (IOSR-
JMCE) e-ISSN: 2278-1684,p-ISSN: 2320-334X, Volume 14, Issue 3
Ver. II (May. - June. 2017), PP 33-35 www.iosrjournals.org
Orsos, T., ‘BST: The Lightweight concrete aggregate’, Concrete
Institute of Australia seminar on Special UseConcretes,Melbourne,
B.L.Rajput and Indrasen Singh, “Green Concrete- An
Overview”, Indian Highways Journal, February 2012