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!!
Team Work of Mr Haider Ali Jafferi and M.Ali Rehman Siddiqui. Both are close friends and Both are Civil Engineer.. Hope this presentation will be Fruitful for you.. Remember us in your prayers.
Scientists have identified this commonly used sealcoat as a major source of dangerous chemicals in streams and lakes, and as a significant health risk to the public, especially young children. These chemicals, which will are discussed in depth in the webinar, are found in the sediments of nearby lakes and streams from pavements coated with this type of product.
Our expert speaker is Dr. Barbara Mahler, a Research Hydrologist with the USGS at the Texas Water Science Center. She is part of the Contaminant Trends in Lake Sediments (CTLS) team, which uses cores of sediments from lakes to reconstruct the contaminant histories of watersheds.
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
Geopolymer concrete is an innovative, eco-friendly construction material.
It is used as replacement of cement concrete.
In geopolymer concrete cement is not used as a binding material.
Fly ash, silica-fume, or GGBS, along with alkali solution are used as binders.
basic knowledge about performance and characteristics of fly ash based concrete. this was my first presentation....so hard core civil engineers might consider me a layman!... anyway its a good way to start knowing gist and basics.
Team Work of Mr Haider Ali Jafferi and M.Ali Rehman Siddiqui. Both are close friends and Both are Civil Engineer.. Hope this presentation will be Fruitful for you.. Remember us in your prayers.
Scientists have identified this commonly used sealcoat as a major source of dangerous chemicals in streams and lakes, and as a significant health risk to the public, especially young children. These chemicals, which will are discussed in depth in the webinar, are found in the sediments of nearby lakes and streams from pavements coated with this type of product.
Our expert speaker is Dr. Barbara Mahler, a Research Hydrologist with the USGS at the Texas Water Science Center. She is part of the Contaminant Trends in Lake Sediments (CTLS) team, which uses cores of sediments from lakes to reconstruct the contaminant histories of watersheds.
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
Geopolymer concrete is an innovative, eco-friendly construction material.
It is used as replacement of cement concrete.
In geopolymer concrete cement is not used as a binding material.
Fly ash, silica-fume, or GGBS, along with alkali solution are used as binders.
basic knowledge about performance and characteristics of fly ash based concrete. this was my first presentation....so hard core civil engineers might consider me a layman!... anyway its a good way to start knowing gist and basics.
The concrete which is made from the industrial wastes and eco-friendly is the green concrete.Green will reduce 10% of CO2 emission which will reduce the global warming, which is one of the reason for world's destruction.Since it is made from the industrial wastes it is very cheap and durable.
Concrete is the most widely used construction material in India with annual consumption exceeding 100 million cubic meters.
High performance concrete is a concrete in which certain characteristics are developed for a particular application and environment, so that it will give excellent performance in the structure in which it will be placed.
A high-strength concrete is always a high performance concrete, but a high-performance concrete is not always a high-strength concrete.
High volume fly ash concrete is a concrete where a replacement of about 35% or more of cement is made with the usage of fly ash.
Fly ash concrete is an eco-friendly construction material in which fly ash replaces a part of Portland cement.
Geopolymer cement concrete is made from utilization of waste materials such as fly ash and ground granulated blast furnace slag (GGBS). Fly ash is the waste product generated from thermal power plant and ground granulate blast furnace slag is generated as waste material in steel plant.
geopolymer concrete ppt
geopolymer concrete journals
geopolymer concrete pdf
making geopolymer concrete
diy geopolymer concrete
geopolymer concrete price
geopolymer solutions
geopolymer cement recipe
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Bagasse ash as a partial replacement to cement. This replacement can improve the properties of cement as well as, it reduces the effects over the environment.
The reduced CO2 emissions of Geopolymer cements make them a good alternative to Ordinary Portland Cement.
Produces a substance that is comparable to or better than traditional cements with respect to most properties.
Geopolymer concrete has excellent properties within both acid and salt environments
Low-calcium fly ash-based geopolymer concrete has excellent compressive strength and is suitable for Structural applications.
The reinforcing effects of graphene oxide (GO) on portland cement paste are investigated. It is dis- covered that the introduction of 0.05% by weight GO sheets into the cement paste can increase the compressive strength and tensile strength Of the cement composite due to the reduction of the pore structure of the cement paste.The overall results indicate that GO reinforcing the engineering properties of portland cement.
It is special type of concrete that can take the bending stresses.
It consist of special type of materials that makes it flexible. It was developed by the Professor Victor Li at the University of Michigan.
Its engineering name is Engineered Cementitious Composite (ECC).
It exhibits the property of a ductile material instead of a brittle material which is shown by the conventional concrete.
This material can bring the revolution because of its some special quality such as flexibility, self-healing, lighter weight, etc. In some countries such as Japan, Korea, U.S.A, etc the flexible concrete is used in many structure.
But in India it is still a new material and requires proper research for its use in India.
Soon we may saw the use of flexible concrete in many structure.
For more info Visit this link: http://civildigital.com/all-about-flexible-concrete-bendable-concrete-engineered-cementitious-composite-ecc/
Image Courtesy:
https://3c1703fe8d.site.internapcdn.net/newman/gfx/news/hires/2016/1-newbendablec.jpg
The concrete which is made from the industrial wastes and eco-friendly is the green concrete.Green will reduce 10% of CO2 emission which will reduce the global warming, which is one of the reason for world's destruction.Since it is made from the industrial wastes it is very cheap and durable.
Concrete is the most widely used construction material in India with annual consumption exceeding 100 million cubic meters.
High performance concrete is a concrete in which certain characteristics are developed for a particular application and environment, so that it will give excellent performance in the structure in which it will be placed.
A high-strength concrete is always a high performance concrete, but a high-performance concrete is not always a high-strength concrete.
High volume fly ash concrete is a concrete where a replacement of about 35% or more of cement is made with the usage of fly ash.
Fly ash concrete is an eco-friendly construction material in which fly ash replaces a part of Portland cement.
Geopolymer cement concrete is made from utilization of waste materials such as fly ash and ground granulated blast furnace slag (GGBS). Fly ash is the waste product generated from thermal power plant and ground granulate blast furnace slag is generated as waste material in steel plant.
geopolymer concrete ppt
geopolymer concrete journals
geopolymer concrete pdf
making geopolymer concrete
diy geopolymer concrete
geopolymer concrete price
geopolymer solutions
geopolymer cement recipe
Presentation by
Primary Information Services
www.primaryinfo.com
mailto:primaryinfo@gmail.com
Download PDF Version at
https://www.slideshare.net/thorapadi/presentations
See You tube Channel
https://www.youtube.com/user/ch600091/videos?view_as=subscriber
Bagasse ash as a partial replacement to cement. This replacement can improve the properties of cement as well as, it reduces the effects over the environment.
The reduced CO2 emissions of Geopolymer cements make them a good alternative to Ordinary Portland Cement.
Produces a substance that is comparable to or better than traditional cements with respect to most properties.
Geopolymer concrete has excellent properties within both acid and salt environments
Low-calcium fly ash-based geopolymer concrete has excellent compressive strength and is suitable for Structural applications.
The reinforcing effects of graphene oxide (GO) on portland cement paste are investigated. It is dis- covered that the introduction of 0.05% by weight GO sheets into the cement paste can increase the compressive strength and tensile strength Of the cement composite due to the reduction of the pore structure of the cement paste.The overall results indicate that GO reinforcing the engineering properties of portland cement.
It is special type of concrete that can take the bending stresses.
It consist of special type of materials that makes it flexible. It was developed by the Professor Victor Li at the University of Michigan.
Its engineering name is Engineered Cementitious Composite (ECC).
It exhibits the property of a ductile material instead of a brittle material which is shown by the conventional concrete.
This material can bring the revolution because of its some special quality such as flexibility, self-healing, lighter weight, etc. In some countries such as Japan, Korea, U.S.A, etc the flexible concrete is used in many structure.
But in India it is still a new material and requires proper research for its use in India.
Soon we may saw the use of flexible concrete in many structure.
For more info Visit this link: http://civildigital.com/all-about-flexible-concrete-bendable-concrete-engineered-cementitious-composite-ecc/
Image Courtesy:
https://3c1703fe8d.site.internapcdn.net/newman/gfx/news/hires/2016/1-newbendablec.jpg
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology
Green concrete for sustainable constructioneSAT Journals
Abstract There are many choices in regard to selection of materials in any type of constructions. Due to growing interest in sustainable construction, engineers and architects are motivated to choose the materials which are more sustainable. Green concrete capable for sustainable construction is characterized by application of industrial wastes to reduce consumption of natural resources and energy and pollution of the environment. Replacement of materials over nominal concrete is what makes green concrete more environmental friendly concrete. Marble sludge powder, quarry rocks, crushed concrete and fly ashes are some of the materials used for making green concrete, a sustainable construction. Keywords: Construction Industry, Environmental Impact, Geo-polymer concrete, Green Concrete, Recycled Materials, Sustainable Construction, Virgin Material.
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
A brief overview on Non conventional concrete technologies like Self compacting concrete,Green concrete etc.
A good topic for technical presentation on Civil Engg.
Composite construction by Er. SURESH RAOAjit Sabnis
Presentation is a part of Structural Engg. series by ACCE(I) Institutes. Deals with details of Composite Structures-Design and Construction with case studies
Approach to Sustainability: NBC 2016 ProvisionsAjit Sabnis
The talk stimulates on the issues: Brief overview of the provisions in part 11, NBC 2016; Some thoughts on “sustainability” ; Case studies ; Concluding remarks
Sustainability Computation of Buildings using Real Time Data: Pre-Constructio...Ajit Sabnis
This talk will touch upon establishing baseline values thru a benchmark project, computation of sustainability percentage for individual and building clusters. It also explains about the sustainability classification of buildings at the conceptual stage providing us an insight to evolve mitigation strategies in reducing the carbon footprint.
Optimizing and Saving WATER in achieving Green ConstructionAjit Sabnis
The talk deals with techniques of optimizing the water requirement at the construction sites. Also touches on details about our contribution to save and harvest water.
Embedded Energies, SDIs and Sustainability Quantification Ajit Sabnis
This talk covers computation methodologies for evaluating Embodied Energy, Embodied Carbon of stand alone materials and sub-systems in a building using three perspectives including geo-specific sustainability Development Index- with Example. Also covers Embodied Water.
WRI’s brand new “Food Service Playbook for Promoting Sustainable Food Choices” gives food service operators the very latest strategies for creating dining environments that empower consumers to choose sustainable, plant-rich dishes. This research builds off our first guide for food service, now with industry experience and insights from nearly 350 academic trials.
Willie Nelson Net Worth: A Journey Through Music, Movies, and Business Venturesgreendigital
Willie Nelson is a name that resonates within the world of music and entertainment. Known for his unique voice, and masterful guitar skills. and an extraordinary career spanning several decades. Nelson has become a legend in the country music scene. But, his influence extends far beyond the realm of music. with ventures in acting, writing, activism, and business. This comprehensive article delves into Willie Nelson net worth. exploring the various facets of his career that have contributed to his large fortune.
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Introduction
Willie Nelson net worth is a testament to his enduring influence and success in many fields. Born on April 29, 1933, in Abbott, Texas. Nelson's journey from a humble beginning to becoming one of the most iconic figures in American music is nothing short of inspirational. His net worth, which estimated to be around $25 million as of 2024. reflects a career that is as diverse as it is prolific.
Early Life and Musical Beginnings
Humble Origins
Willie Hugh Nelson was born during the Great Depression. a time of significant economic hardship in the United States. Raised by his grandparents. Nelson found solace and inspiration in music from an early age. His grandmother taught him to play the guitar. setting the stage for what would become an illustrious career.
First Steps in Music
Nelson's initial foray into the music industry was fraught with challenges. He moved to Nashville, Tennessee, to pursue his dreams, but success did not come . Working as a songwriter, Nelson penned hits for other artists. which helped him gain a foothold in the competitive music scene. His songwriting skills contributed to his early earnings. laying the foundation for his net worth.
Rise to Stardom
Breakthrough Albums
The 1970s marked a turning point in Willie Nelson's career. His albums "Shotgun Willie" (1973), "Red Headed Stranger" (1975). and "Stardust" (1978) received critical acclaim and commercial success. These albums not only solidified his position in the country music genre. but also introduced his music to a broader audience. The success of these albums played a crucial role in boosting Willie Nelson net worth.
Iconic Songs
Willie Nelson net worth is also attributed to his extensive catalog of hit songs. Tracks like "Blue Eyes Crying in the Rain," "On the Road Again," and "Always on My Mind" have become timeless classics. These songs have not only earned Nelson large royalties but have also ensured his continued relevance in the music industry.
Acting and Film Career
Hollywood Ventures
In addition to his music career, Willie Nelson has also made a mark in Hollywood. His distinctive personality and on-screen presence have landed him roles in several films and television shows. Notable appearances include roles in "The Electric Horseman" (1979), "Honeysuckle Rose" (1980), and "Barbarosa" (1982). These acting gigs have added a significant amount to Willie Nelson net worth.
Television Appearances
Nelson's char
Natural farming @ Dr. Siddhartha S. Jena.pptxsidjena70
A brief about organic farming/ Natural farming/ Zero budget natural farming/ Subash Palekar Natural farming which keeps us and environment safe and healthy. Next gen Agricultural practices of chemical free farming.
UNDERSTANDING WHAT GREEN WASHING IS!.pdfJulietMogola
Many companies today use green washing to lure the public into thinking they are conserving the environment but in real sense they are doing more harm. There have been such several cases from very big companies here in Kenya and also globally. This ranges from various sectors from manufacturing and goes to consumer products. Educating people on greenwashing will enable people to make better choices based on their analysis and not on what they see on marketing sites.
"Understanding the Carbon Cycle: Processes, Human Impacts, and Strategies for...MMariSelvam4
The carbon cycle is a critical component of Earth's environmental system, governing the movement and transformation of carbon through various reservoirs, including the atmosphere, oceans, soil, and living organisms. This complex cycle involves several key processes such as photosynthesis, respiration, decomposition, and carbon sequestration, each contributing to the regulation of carbon levels on the planet.
Human activities, particularly fossil fuel combustion and deforestation, have significantly altered the natural carbon cycle, leading to increased atmospheric carbon dioxide concentrations and driving climate change. Understanding the intricacies of the carbon cycle is essential for assessing the impacts of these changes and developing effective mitigation strategies.
By studying the carbon cycle, scientists can identify carbon sources and sinks, measure carbon fluxes, and predict future trends. This knowledge is crucial for crafting policies aimed at reducing carbon emissions, enhancing carbon storage, and promoting sustainable practices. The carbon cycle's interplay with climate systems, ecosystems, and human activities underscores its importance in maintaining a stable and healthy planet.
In-depth exploration of the carbon cycle reveals the delicate balance required to sustain life and the urgent need to address anthropogenic influences. Through research, education, and policy, we can work towards restoring equilibrium in the carbon cycle and ensuring a sustainable future for generations to come.
Characterization and the Kinetics of drying at the drying oven and with micro...Open Access Research Paper
The objective of this work is to contribute to valorization de Nephelium lappaceum by the characterization of kinetics of drying of seeds of Nephelium lappaceum. The seeds were dehydrated until a constant mass respectively in a drying oven and a microwawe oven. The temperatures and the powers of drying are respectively: 50, 60 and 70°C and 140, 280 and 420 W. The results show that the curves of drying of seeds of Nephelium lappaceum do not present a phase of constant kinetics. The coefficients of diffusion vary between 2.09.10-8 to 2.98. 10-8m-2/s in the interval of 50°C at 70°C and between 4.83×10-07 at 9.04×10-07 m-8/s for the powers going of 140 W with 420 W the relation between Arrhenius and a value of energy of activation of 16.49 kJ. mol-1 expressed the effect of the temperature on effective diffusivity.
1. Dr. M. R. Kalgal
Past VP, Asian Concrete Federation
Past President, Indian Concrete Institute
Technical Advisor
UltraTech Cement Ltd.
ACCE - SES
7th Nov 2020
Sustainable Development
with
CONCRETE
2. 2
A development which
✓recognizes the needs of everyone,
✓maintains stable levels of economic growth and
employment
✓uses natural resources prudently, whilst protecting, and if
possible enhancing, the environment.
Sustainable Development
4. 4
Concrete – Sustainable Construction Material
When considered over its entire life cycle -
extraction, processing, construction,
operation, demolition and recycling - concrete
makes a significant contribution to the triple
bottom line - environmental, social and
economic - of sustainable development.
5. 5
Low CO2 intensity
The production of
concrete, which consists of
10% - 15% cement,
results in emissions of
about 0.13 tonne of CO2
per tonne of concrete,
equal to 1/9 the emissions
of cement.
Concrete manufacturing results in less CO2 per unit than almost all other
construction materials, making it the sustainable construction material of
choice.
6. Making Concrete more Sustainable
➢ Make Cement more Sustainable
➢ Use less energy intensive kilns
➢ Use supplementary cementitious materials to reduce
clinker component
➢ Use new types of clinker
➢ Use alternative fuels and renewable energy during
production process
➢ Produce clinker free cement
➢ Use alternative materials in concrete
➢ Alternative cementitious materials
➢ Use alternative aggregates
➢ Sequester CO2 in Concrete
➢ Produce Clinker free Concrete
Wastes in Concrete – Converting Liabilities into Assets !
7.
8. Cement
Popular Statement – Production of 1 MT of Cement
results in emission of 1MT of CO2 to atmosphere
What is being done?
8
Making Concrete more Sustainable
9. 2050 Climate Ambition
Unveiled on September 1, 2020 by Forty of the world’s
leading cement and concrete companies
The ambition statement demonstrates the commitment of
the industry across the globe to drive down the CO2 footprint
of the world’s most used man-made product, with an
aspiration to deliver society with carbon neutral concrete by
2050.
The statement identifies the essential levers that will be
required to achieving carbon neutral concrete, including:
◼ reducing and eliminating energy related emissions,
◼ reducing process emissions through new technologies and
◼ deployment of carbon capture, more efficient use of concrete, reuse
and recycling of concrete and buildings, and harnessing concrete’s
ability to absorb and store carbon from the atmosphere.
9
10. 10
Cement Industry is trying its best to reduce the CO2
footprint
❑ By using efficient manufacturing techniques and alternate
fuels, CO2 emission reduced to around 0.8MT per MT of
cement produced
❑ Switching to manufacture of Blended Cements where Mineral
Admixtures are used, will reduce the OPC content in cement
and hence environmental impact
❑ What “we” can do
➢ In India, majority of “normal” concrete of grades M20 and M25
are still manufactured by volume batching.
➢ Emphasis should be on optimizing the use of cement by going
in for mix proportioning.
11. 11
LC3 Cement – the green cement
Limestone Calcined Clay Clinker Cement
❑ When used together, the aluminates from the calcined clay
interact with the calcium carbonates from the limestone,
leading to a less porous, and therefore stronger, cement paste
❑ Now, an EPFL-led consortium has received backing from the
Swiss Agency for Development and Cooperation (SDC) to speed
up the development and testing of a new blend of low-carbon
cement. Elaborated with partners from the Indian Institutes of
Technology and from universities in Cuba and Brazil, this new
blend substitutes up to half of the usual Portland cement used
to make concrete with highly abundant clay and limestone,
promising to reduce cement-related CO2 emissions by up to
30%.
Courtesy Dr. Karen Scrivner
14. 14
✓ With current clinker production facilities, production capacity
for cement can be increased twofold without increasing total
CO2 emissions.
✓ Quarry life can then be considerably extended and costly
Carbon capture and storage technologies for emission
abatement can be avoided.
✓ Emissions of LC3 are estimated to be 20-30% lower than
Portland cement because:
➢ Reduced clinker content leads to less process emissions from the
decarbonation of limestone in clinker and less emissions from heating
limestone to form clinker
➢ Grinding limestone takes less energy than heating it
➢ Calcination of clay takes place at 800°C and uses roughly 55% of the
energy needed for clinkerisation at 1450°C.
LC3 allows growth without abstinence due to
resources and CO2 efficiency
Courtesy Dr. Karen Scrivner
15. 15
Lower cost of production
Reduced clinker content, decreased fuel consumption for calcination compared to
clinker plus the fact that limestone does not need to be heated should contribute
to lower production costs. Lower production costs are one of the main drivers for
technology uptake.
A well-known technology
Clinker–Limestone systems and Clinker–Calcined Clay systems are well established.
In effect, LC3 is optimises the synergy between two already known chemical
systems. This leads to a higher degree of confidence that the materials will be
durable since the chemical nature of the hydrates and pore structure are similar to
other blended cements which have proven durable.
Resource efficiency
Using low-grade clay and limestone does not require opening new quarries nor
deplete agricultural soils.
.
Existing equipment can be used
LC3 can be produced with existing manufacturing equipment, leading to only
marginally increased investments for calcining equipment.
Courtesy Dr. Karen Scrivner
16. 16
Sustainable Aggregates
➢ Recycled Aggregates:
➢ Construction and Demolition Waste
material (C&DW) and
➢ railway ballast.
➢ Secondary Aggregates:
➢ manufactured and natural
Alternatives to Sand
❑ Crushed Stone Sand
❑ Manufactured Sand
❑ C&DW Sand
❑ Marine Sand
❑ Industrial wastes viz. Pond Ash
Making Concrete more Sustainable
17. Procedure followed in effective utilisation of Alternate Sources
❑ Characterization of materials
➢ Physical
➢ Chemical
❑ Study of Concrete made with alternative materials
➢ Fresh State
➢ Hardened State
❑ Study of effects on long term properties and durability
❑ Development of mix design and QA/QC procedures
18. Durability of Concrete
Ability to resist weathering action, chemical attack,
abrasion or any other process of deterioration while
retaining its original form, quality, and serviceability when
exposed to its environment during its design life
Durability is the key to sustainability. If the useful life of a
structure can be extended by using concrete, that's a huge
gain for sustainability.
19. What Influences Durability of Concrete?
Durability
Concrete
System
Materials
Processing
Service
Environment
Physical
Effects
Chemical
Effects
20. What Influences Durability of Concrete?
Concretes are said to be less durable when they
are physically or chemically compromised.
Physical factors can result in chemical reactions
reducing durability
◼ e.g Cracking due to shrinkage can allow reactive gases
and liquids to enter the concrete
Chemical factors can result in physical outcomes
reducing durability
◼ e.g. Alkali silica reaction opening up cracks allowing
other agents such as sulfate and chloride in seawater
or CO2 to enter.
21. Is durability an issue for Concrete with
Alternate Materials?
Yes and No
22. Is durability an issue for Concrete with
Alternate Materials?
Yes
Problem
◼ Less understanding of the properties of alternate materials
◼ Less control on the properties (and quality) of alternate
materials
◼ Less understanding of the impact of alternate materials
Consequence
◼ Undesirable interactions with other ingredients
◼ Altered fresh concrete behaviour
Reduced workability, excessive bleeding, reduced slump retention
excessive shrinkage cracks etc.
◼ Altered/impaired hard concrete behaviour
Reduced permeability, reduced strength, delayed ettringite
23. Is durability an issue for Concrete with
Alternate Materials?
No
Issues can be overcome by
◼ Proper study of the properties of alternate materials
◼ Following a vigorous Quality Assurance system
◼ Ensuring
Proper mix design procedure
Strict monitoring of site practices
Proper compaction
Adequate curing
Result
◼ Much denser and impermeable concrete
◼ Concrete with lesser environmental impact
◼ Concrete with lesser life-cycle cost
26. ✓ Worldwide, hundreds of companies and research groups are
working to keep CO2 out of the atmosphere and store it
someplace else—including in deep geologic formations,
soils, soda bubbles, and concrete blocks.
✓ By making waste CO2 into something marketable, entrepreneurs
can begin raising revenues needed to scale their technologies
Upcycling CO2
27. Nanomaterials derived from the use of CO2
Carbon Upcycling technology transforms residues such as fly
ash and slag, making them more reactive and increasing their
cementitious properties.
The use of CO2 previously captured, combined with a physical
transformation of the material during the process, generates
a new addition for the cement that allows the production of
concrete with a low environmental footprint.
The improvement in the cementitious capacity of materials
achieved by the Carbon Upcycling technology will expand the
range of sources that can be used to reduce the amount of
clinker needed in cement production and the amount of
cement required in concrete.
28. Carbon Capture
CO2 Concrete’s process locks flue gas CO2 into limestone
within CO2 Concrete™.
The process requires minimal CAPEX, since it features simple
“stack-tap” integration with limited site utility tie-ins, does
not require a carbon capture system, and readily integrates
into existing construction supply chains and workflows.
Additionally, CO2 Concrete™ mixtures can incorporate low-
value fly ashes, including those reclaimed from landfills and
ponds, while providing engineering performance equivalent
to typical concrete.
The low cost of CO2 Concrete™ is a significant advantage in
the low margin concrete business.
29. ❑ Patented process from USA based Solidia Technologies
❑ A low-lime calcium silicate (Ca2SiO4) cement (CSC) that cures by a
reaction with gaseous carbon dioxide (CO2).
❑ The production of CSC requires less limestone and lower kiln
temperatures than those used for ordinary Portland cement
(OPC). This makes it possible to reduce the carbon dioxide
emissions at the cement kiln from ∼810 kg/t for OPC to ∼565 kg/t
for CSC.
❑ The carbon dioxide used in the curing process and captured
within CSC-based concrete (CSC-C) is industrial-grade carbon
dioxide sourced from waste flue gas streams.
These translate to approximately 30% reduction in CO2 emissions.
Carbonated Calcium Silicate Concrete
31. Step 1 :Valorization (Conferring value upon something)
Recover and enhance co-products from industry and construction,
which are sent to production plant :
✓ Blast furnace slag comes from the metallurgical and steel industry
✓ Flash clay is a co-product of clay sludge
✓ Gypsum/Desulfogypsum are produced from construction site excavated
material.
32. The manufacturing process based on
the systematic use of abundant co-
products as a substitute for natural
resources. The co-products, are
mixed with activators and
superactivators specifically
formulated .
This is followed by the packaging of
cements (big bag, bulk or bags) and
then shipment to the construction
sites
Step 2 : Production
33. These cements are used to serve the three main cement markets:
➢ Precast concrete
➢ Ready-mix concrete
➢ Retail Sale
Step 3 : Use in Construction
35. H-P2A cement
Activators and superactivators formulated are added to flashed clay
mixed with silicate to obtain H-P2A cement.
• pull-out strength of more than 25 MPa.
• based on activated clay and silicate in the form of a two-component
“paste & liquid” system.
• a 100% mineral, non-flammable and VOC -free adhesive.
Solution based on the use of blast furnace slag. Efficient activation
system allows this co-product to be used without any addition of
clinker in its formulation.
Used in various fields of construction, including “ready-mix
concrete” and “precast concrete”.
H-UKR cement
37. H-EVA cement
➢ An innovative binder, H-EVA is an alkaline ettringitic technology.
➢ Activators and superactivators formulated are added to flashed
clay, mixed with gypsum/desulfogypsum to obtain H-EVA cement.
(Gypsum from industrial processes, such as desulfogypsum or phosphogypsum,
are currently still little upgraded)
➢ H-EVA cement has a mechanical strength of up to 60 MPa at 28
days.
➢ H-EVA is ideal as a road binder, but can also be used for mortars,
plasters and construction concretes.
38. ZERO Cement Concrete
❑ Concrete corrosion and fatbergs plague sewage systems
around the world, leading to costly and disruptive
maintenance (Fatbergs are gross globs of congealed mass clogging
sewers with fat, grease, oil and non-biodegradable junk)
❑ A Zero cement composite of nano-silica, fly-ash, slag and
hydrated lime is developed at RMIT Australia.
❑ Zero-cement concrete achieves multiple benefits:
✓ it’s environmentally friendly,
✓ reduces concrete corrosion by 96 per cent and
✓ totally eliminates residual lime that is instrumental in the
formation of fatbergs
❑ “With further development, it is claimed that zero-cement
concrete could be made totally resistant to acid corrosion.”
39. Sequestering CO2
➢ CO2 captured from existing industrial emitters, purified, stored,
and distributed to concrete producers in pressurised tanks.
➢ Liquid CO2 injected into the wet concrete mix,
➢ CO₂ reacts with calcium ions from cement to form a nano-sized
mineral, Calcium Carbonate, which gets embedded in the
concrete.
➢ Result –
✓ Stronger concrete
✓ mix optimization – redn. in cement consumption
✓ Consumption of CO₂. (~500MT/yr)
• The technology can be retrofitted into existing concrete plants
• Introduction of the CO2 does not impact the concrete’s
workability, air content, freeze-thaw performance, pH, density,
durability, air content, colour, texture, or finish
CO₂ Mineralization
40. Protecting Concrete
Carbon Upcycling Technologies (CUT) has introduced a
nanotech coating called AlphaCarbon, which protects
materials like concrete against acids and corrosion.
It's just one of Sinha's efforts to convert carbon dioxide into a
range of solid nanoparticles, useful for all manner of
materials.
The AlphaCarbon coating is installed in over 250 locations
across the US, including franchises of McDonald’s, Costco, and
Walmart.
41. 56
Concrete and
Materials for Concrete
in Indian Context
❑Concrete construction practices are significantly different in India
in comparison to developed countries.
❑Even now majority of concrete produced and used in India is by
the unorganized sector.
❑Virtually no awareness about the sustainability aspects.
❑Env. regulations – inadequate/not enforced effectively.
❑Engineered or semi-engineered constructions - limited to larger
housing or infrastructure projects.
❑The use of Ready Mix Concrete (where there is likelihood of
optimal use of materials) - just above 10 percent of the total
concrete produced
❑Need to minimize wastage of precious natural resources by making
their efficient and judicious use.
42. Concluding Remarks
Construction industry has a large role to play in Sustainable
Development.
The drive towards more Sustainable Construction is
achievable only when all the stakeholders in the industry,
including developers, designers, builders and suppliers
recognize and appreciate its importance.
Concrete being the most ubiquitous construction material, it
is necessary to make it as sustainable as possible.
Durability is one of the important pillars of Sustainability
Design for durability followed by selection of proper materials
and their combination supported by systematic QA/QC
procedures can ensure a durable and hence Sustainable
Concrete