1) LCC achieves a 25% reduction in the CO2 footprint of structures and plays a key role in responding to climate change.
2) LCC is stronger, longer lasting, and better looking than traditional concrete.
3) LCC can reduce the embodied CO2 emissions of the average structure by 25%, making it the best available technology for reducing CO2 in construction.
Cracks in concrete are inevitable and are one of the inherent weaknesses of concrete. Water and other salts seep through these cracks, corrosion initiates, and thus reduces the life of concrete. So there was a need to develop an inherent biomaterial, a self - repairing material which can remediate the cracks and fissures in concrete. Bacterial concrete is a material, which can successfully remediate cracks in concrete. This technique is highly desirable because the mineral precipitation induced as a result of microbial activities is pollution free and natural. As the cell wall of bacteria is anionic, metal accumulation (calcite) on the surface of the wall is substantial, thus the entire cell becomes crystalline and they eventually plug the pores and cracks in concrete. This paper discusses the plugging of artificially cracked cement mortar using Bacillus Pasteurii bacteria combined with sand as a filling material in artificially made cuts in cement mortar which was cured in urea and Calcium chloride medium. The effect on the compressive strength and stiffness of the cement mortar cubes due to the mixing of bacteria is also discussed in this paper. It was found that use of bacteria improves the stiffness and compressive strength of concrete. Scanning electron microscope (SEM) is used to document the role of bacteria in microbiologically induced mineral precipitation. Rod like impressions were found on the face of calcite crystals indicating the presence of bacteria in those places.
In this study, bacterial concrete is to be prepared under grade of concrete OPC 43.The design mix proportioning also carried under IS code provision. Testing of specimens are carried at 7 days ,14 days and 28 days of curing by Compression Testing Machine and Universal Testing Machine for corresponding specimens. The Compressive Strength and Flexural Strength of Bacterial Concrete are found.
High-Volume Fly Ash Concrete: According to some researchers, more than 30% fly ash by mass (equivalent as 50% by volume) of the cementitious material may be considered enough to classify the mixtures as High-Volume Fly Ash (HVFA) concrete. It is possible to produce sustainable, high performance concrete mixtures with 50% or more cement replacement by fly ash.
you would be aware about the different types of special concrete being used in india.All these types of concrete are being produced by ultratech concrete, for more details visit www.ultratechconcrete.com/concrete_types.html
PARTIAL REPLACEMENT OF COARSE AGGREGATE WITH WASTECERAMIC TILE IN CONCRETELokeshShirbhate2
PARTIAL REPLACEMENT OF COARSE AGGREGATE WITH WASTECERAMIC TILE IN CONCRETE.
This Presentation is Describe the behavior of concrete after the use of Ceramic tiles in concrete as a replacement of coarse Aggregate.
Cracks in concrete are inevitable and are one of the inherent weaknesses of concrete. Water and other salts seep through these cracks, corrosion initiates, and thus reduces the life of concrete. So there was a need to develop an inherent biomaterial, a self - repairing material which can remediate the cracks and fissures in concrete. Bacterial concrete is a material, which can successfully remediate cracks in concrete. This technique is highly desirable because the mineral precipitation induced as a result of microbial activities is pollution free and natural. As the cell wall of bacteria is anionic, metal accumulation (calcite) on the surface of the wall is substantial, thus the entire cell becomes crystalline and they eventually plug the pores and cracks in concrete. This paper discusses the plugging of artificially cracked cement mortar using Bacillus Pasteurii bacteria combined with sand as a filling material in artificially made cuts in cement mortar which was cured in urea and Calcium chloride medium. The effect on the compressive strength and stiffness of the cement mortar cubes due to the mixing of bacteria is also discussed in this paper. It was found that use of bacteria improves the stiffness and compressive strength of concrete. Scanning electron microscope (SEM) is used to document the role of bacteria in microbiologically induced mineral precipitation. Rod like impressions were found on the face of calcite crystals indicating the presence of bacteria in those places.
In this study, bacterial concrete is to be prepared under grade of concrete OPC 43.The design mix proportioning also carried under IS code provision. Testing of specimens are carried at 7 days ,14 days and 28 days of curing by Compression Testing Machine and Universal Testing Machine for corresponding specimens. The Compressive Strength and Flexural Strength of Bacterial Concrete are found.
High-Volume Fly Ash Concrete: According to some researchers, more than 30% fly ash by mass (equivalent as 50% by volume) of the cementitious material may be considered enough to classify the mixtures as High-Volume Fly Ash (HVFA) concrete. It is possible to produce sustainable, high performance concrete mixtures with 50% or more cement replacement by fly ash.
you would be aware about the different types of special concrete being used in india.All these types of concrete are being produced by ultratech concrete, for more details visit www.ultratechconcrete.com/concrete_types.html
PARTIAL REPLACEMENT OF COARSE AGGREGATE WITH WASTECERAMIC TILE IN CONCRETELokeshShirbhate2
PARTIAL REPLACEMENT OF COARSE AGGREGATE WITH WASTECERAMIC TILE IN CONCRETE.
This Presentation is Describe the behavior of concrete after the use of Ceramic tiles in concrete as a replacement of coarse Aggregate.
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
green concrete preparation and techniques used in manufacturing of green concrete and uses and applications and proportions ratios as explained briefly to the civil engineering field
Hii sir good morning to all
this Ppt is prepared for to protect the environment from co2 gasses could you please read it understand
i hope we are all use the green concrete ....
thank you friends
have a nice day
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.
Concrete is one of the most versatile materials used in infrastructural development. It plays a critical role in in construction industry and making it sustainable is of paramount importance. How do we do it? Let us look here!!
Eco-Concrete : Opportunities and ChallengesAbhishek Suman
ECO- concrete is a revolutionary topic in the history of concrete industry. This was first invented in Denmark in the year 1998. ECO- concrete has nothing to do with color. It is a concept of thinking environment into concrete considering every aspect from raw materials manufacture over mixture design to structural design, construction, and service life
A brief overview on Non conventional concrete technologies like Self compacting concrete,Green concrete etc.
A good topic for technical presentation on Civil Engg.
1. “Using Low Carbon 25% reduction in the CO2 footprint of a typical structure.
Concrete (LCC) is the LCC plays a key role in the response to climate change
best way to reduce the
Embodied CO2* in the and is stronger, longer lasting and better looking.
built environment.” * Embodied CO2: Embodied CO2 is the quantity of CO2 emitted in the manufacture, supply and construction of a building
or structure.
Sustainability
Sustainable Development is “development that meets the needs of the
present without compromising the ability of future generations to meet
their own needs”.
For example, using LCC on a typical 3-bed semi detached house achieves:
• Saving of over 10 tonnes of CO2 emissions
• Saving of quarrying over 18 tonnes of natural resources
• Saving the energy equivalent of over 1.7 years of electricity use in the
average home.
Low Carbon Embodied CO2
Low Carbon Concrete uses Ecocem green cement** leading to a reduced The Embodied CO2 in Irish construction projects accounts for between
carbon footprint. Concrete containing Ecocem is also stronger, looks 10% & 15% of all CO2 emissions in Ireland. LCC can reduce the embodied
better and lasts longer, making it the sustainable solution of choice for CO2 in concrete by 40%. LCC can reduce the embodied CO2 of the
new build. average structure by 25%, making it the Best Available Technology (BAT)
for reducing embodied CO2 in the construction industry.
**What is Ecocem Green Cement? How to specify Ecocem in your concrete
Ecocem Green Cement is GGBS (Ground Granulated Blast Furnace Slag), Ecocem replaces between 25% and 70% of the cement in a Low Carbon
a premium quality cement manufactured from a high quality by-product Concrete mix, and the typical replacement ratio for ready mixed concrete
of the steel industry. Ecocem is an alternative to ordinary cement and is 50%. For more information on replacement ratios, and the advantages
because it is manufactured from a recycled product, it releases 16 times of a high Ecocem content, please contact your local concrete supplier or
less CO2 during its manufacture. see www.lowcarbonconcrete.ie
www.lowcarbonconcrete.ie.
2. “LCC is stronger, lasts longer, is much more resistant
in aggressive environments and is better looking.”
The Convention Centre Dublin
Using LCC in the Convention Centre Dublin has achieved:
• Saving of over 6,000 tonnes of CO2 emissions
• Saving of quarrying over 10,000 tonnes of natural resources
• Saving the energy equivalent of over 1,000 years of electricity use
in the average home.
Reduced Deterioration in Aggressive Environments
Fire can reduce the strength of concrete. LCC shows greatly improved Salts on roads and in marine environments penetrate concrete,
strength after fire when compared to concrete made with ordinary cement. attacking the steel reinforcement and causing it to expand. This causes
the surrounding concrete to crack, requiring repair and, ultimately
Acids such as those found in farms and water/wastewater treatment replacement. Using Ecocem GGBS Cement will double the life span of
plants cause deterioration of concrete. It is well established, through the concrete in terms of resistance to chloride attack (see graph) – the
extensive research and experience, that the GGBS cement used in LCC National Roads Authority call for the use of GGBS in concrete on all
greatly reduces the damage to concretes in this environment. bridge structures in Ireland.
Previously developed sites may contain contaminants in the soil, Cracking and voids will lead to significant damage in your concrete. LCC,
ground and/or groundwater which attack concrete causing expansion because of the chemistry, has less cracking and has a much reduced void
and cracking, leading to accelerated deterioration. Ecocem GGBS ratio than concrete made with ordinary cement.
cement improves the chemistry and reduces the porosity of the concrete,
protecting it from sulphates. The graph shows the rate of expansion
falling dramatically as the percentage of Ecocem increases.
Increased resistance in aggressive environments when using LCC Increased life of structure when using LCC
Architecturally Superior Concrete
Low Carbon Concrete is lighter in colour because of the white colour
of Ecocem cement. Also, due to the smaller particle size than ordinary
cement, the concrete is easier to place and compact, leading to a smoother
more defect free finish. Ecocem will also eliminate efflorescence, the
unsightly white staining of concrete.
Irish Concrete Society – Design and Irish Concrete Society – Design and
Construction Award, winning entry in Construction Award, winning entry in
2007 – 70% GGBS (insitu concrete) 2006 – 50% GGBS (insitu and precast
concrete)
www.lowcarbonconcrete.ie