Economy & Market
Digitalisation Paves the Way
Published
3 years agoon
By
admin
Dr BN Mohapatra, Advisor and Consultant, UltraTech Cement, lays emphasis on the various aspects of decarbonisation that are helping the Indian cement industry make optimum use of technology.
The Indian cement industry is one of the core industries of the country, which plays a vital role in the growth and economic development, because of its strong linkage to other sectors such as infrastructure, construction, housing, transportation, mining, etc. The current annual installed capacity of the cement industry in India is about 594 million tonnes with cement production of around 361 million tonnes (2021-22).
There are a total 333 cement manufacturing units in India comprising 150 integrated large cement plants, 116 grinding units, 62 mini cement plants and 5 clinkerisation units. Cement consumption in India is around 260 kg per capita against a world average of 540 kg per capita, which shows significant potential for the growth of the industry.
At present, India is seeing demand for large-scale infrastructure development and the housing in the country is also on a rise. As a result of this, it is expected that cement demand will grow by around 6-8 per cent by 2030. A growing housing sector, which typically accounts for 60-65 per cent of India’s cement consumption, will remain a key demand driver. Therefore, the challenge lies in making the cement manufacturing process cleaner and efficient and sustainable with innovation and technology.
Shifting to sustainable cement manufacturing is also the need of the hour as cement production is one of the highest emitting industries, accounting for 7 per cent global CO2 emission. It is one of the most widely consumed products globally owing to its various applications spanning from residential to urban constructions, which are indispensable for progress. It is thus, necessary to swiftly adopt sustainable practices to mitigate environmental impact and support achieving sustainability targets such as becoming net zero by 2070.
Adoption of innovation and technology
The cement manufacturers have to play a dual role supporting India’s economic growth by meeting the cement demand and contributing to the sustainability mission by ensuring that cement has minimum impact on the environment. This can be achieved by innovative ways backed by technology.
The Indian cement industry is progressive and is continuously adapting to the latest technologies to make the cement industry more efficient and greener with less environmental footprint.
They utilised strategies such as integrating waste heat recovery systems to meet the energy demand sustainably by lowering dependence on carbon emitting fuels and achieving energy efficiency. This can result in reduction in electricity.
They invested in high efficiency coolers and preheaters to minimise kiln heat requirements.
Using clean energy from renewable sources like solar or wind energy. They developed on-site renewable power generation capabilities to procure clean energy and dependence on fossil fuels.
Capturing of CO2 emissions and storing them or utilising them to produce chemicals, concrete or plastics can prove to be a great alternative to utilise waste and promote a circular economy.
Cement production process using alternative fuel like hazardous waste, biomass, industrial waste, agriculture waste to save the environment and produce greener energy.
Green energy
The productivity of different energy sources for cement plants can vary depending on various factors such as technology being used, availability, cost, infrastructure and local regulations.
Some examples are as under:
Fossil fuels (coal, oil and natural gas): Traditionally being used as the primary energy source for cement production due to their high energy content. However, they contribute significantly to carbon emissions and are considered non-renewable resources.
Agricultural waste: Biomass, such as agricultural waste or dedicated energy corps can be used as alternative fuel source in cement production. Its productivity can vary depending upon the availability and sustainability of biomass feedstock.
Municipal and industrial waste: Certain waste materials, such as shredded tyres or municipal solid waste, can be used as alternate fuel sources in cement kilns. The productivity of waste materials as an energy source depends on their calorific value, their characteristics, availability and proper waste management practices.
Renewable energy sources: Renewable energy sources like solar, wind or geothermal power can be utilised to generate electricity for cement plants. Their productivity depends on factors such as location, resources availability and their ability to integrate them into the plant’s energy infrastructure.
Cement industry exhausts high amounts of hot gases and are being utilised to produce power by using waste heat recovery technologies.
Greener energy has a positive impact on manufacturing, including commercial and technical aspects. Potential impacts on environment, energy efficient and productivity enhancement with lower cost.
Automation and technology
Automation plays a very pivotal role in optimising the use of energy in cement plants. We are using VFD, Smart MCC, Sensors, Integrated Load Management system, Energy Monitoring System and Smart Lighting System for effectively optimising the use of energy. Here are some ways which help in reducing Energy
Energy monitoring and control: Automation systems can continuously monitor energy consumption in various parts of the cement plant such as kilns, mills and crushers. This real time data allows operators to identify pilferage processes or equipment and optimise energy usage.
Process optimisation: Advanced control systems and predictive analytics can optimise the cement manufacturing process to minimise energy consumption. By analysing data from various sensors and instruments, these technologies can identify opportunities for energy savings and automatically adjust parameters to achieve optimal efficiency.
Energy management system: Automation systems can integrate with energy management systems to provide a holistic view of energy usage across the entire plant. This allows operators to track energy performance and accordingly set targets and implement energy savings measures effectively.
Load management: Automation systems can optimise the scheduling and sequencing of equipment to ensure a balanced load distribution, reducing peak demand and improving overall energy efficiency. For example, by co-ordinating the operation of the kilns, mills and other machinery, the system can minimise energy wastage during periods of low demand.
Energy recovery: Automation technology can facilitate the implementation of energy recovery systems in cement plants. For instance, waste heat from kilns can be captured and used to generate electricity or provide heat for other processes, reducing the reliance on external energy sources.
Equipment optimisation: Automation systems can monitor the performances of Individual equipment and identify inefficiencies or malfunctions that may contribute to excessive energy consumption.
Control dust and gas emission
Cement plants have adopted technologies to meet the new emission norms for PM, SO2 and NOX emissions. Plants have installed highly efficient bag filters, ESPs, and hybrid filters to control dust emissions. For NOX reduction, plants have installed secondary control measures like SNCR. All the cement plants have installed a Continuous Emission Monitoring System (CEMS) as per the guidelines of CPCB. In the same spirit cement industry is the first one to adopt filtration technologies like pulse Jet Bag House (PJBH) reverse air bag house and hybrid filters for controlling dust emission from stack. Advent of new fabrics which can withstand higher temperatures and tough working conditions. Controls and advanced electrical systems provided the opportunity to reduce the dust emissions to very low levels. Cement industry embraced these technologies that helped industry today in achieving consistent and lower stack emissions of 30 mg/Nm3.
Cement plants use various types of dust filtration equipment and techniques to control dust emissions and improve air quality. Some of the common methods used include:
- Bag filters
- Electrostatic precipitators (ESPs)
- Cyclones
- Wet scrubbers
- High Efficiency Particulate Air (HEPA) Filters
Digitalisation
In the current era of digitalisation and technological advancements, the companies must accelerate adoption of technologies such as robotics, artificial intelligence, IoT, data analytics and others to expedite sustainability efforts. This can support optimising processes, achieving higher efficiency, visibility and control on operations to speed up the decarbonisation journey. Digitalisation paves the way for implementing advanced digital solutions that can help maintenance team’s transition from reactive to proactive maintenance strategies
Remote monitoring of plant operation: Day-to-day plant operation can be monitored in real time from a remote location using Interconnectivity of Technologies [enabled by Internet of Things (IoT)]. Early detection of equipment issues enables planned maintenance, reducing costly unplanned downtime and minimising repair expenses. This optimisation of Inventory levels minimises carrying costs and mitigates the risk of overstocking or stock outs. Cement plants take corrective actions to reduce energy wastage and carbon footprint, thereby achieving significant cost reductions over time. Automated AI -based predictive maintenance solutions consist of 6-in-1 the Wireless sensors that measure the 6 most important parameters of Tri Axial Vibration, Acoustics, RPM, Temperature, Humidity and Magnetic flux. These sensors act as the vigilant eyes and ears of the manufacturing plants.
Cement industry 4.0: Industry 4.0 or digital innovations, which involves advanced data analytics, intelligent neural networks and Internet of Things (IoT) offer tremendous opportunity to improve the efficiency of manufacturing processes and ease of logistics. AI, sometimes called machine intelligence, is intelligence demonstrated by machines, unlike the natural intelligence displayed by humans and animals. The field was founded on the assumption that human intelligence can be so precisely described that a machine can be made to simulate it.
Simulation techniques for plant optimisation: Cement manufacturers can utilise Computational Fluid Dynamics (CFD) simulation solutions to capitalise on all opportunities to improve processes, either through an engineering contractor or in-house facility. Potential improvements include, but are not limited to, reduction in energy consumption, reduced wear on equipment and improved material distribution to key equipment.
Robotic laboratory and quality optimisation: Indian cement plant has already installed robotic laboratory for automatic sampling and testing. Installed XRF and XRD for both Bogue and actual phases. XRD has wider application in the cement sector like optimisation of burning and cooling conditions in kilns. Prediction of cement compressive strength of 1-day, 3-day, 7-day and 28-day.
Government initiatives
Indian government also takes initiatives through technology for overall economy, development and environment. Here some government initiatives,Decarbonisation of cement industry: Hon’ble Prime Minister of India Shri Narendra Modi has made the pledge to cut the CO2 emissions in the COP 26 summit at Glasgow in November 2021. The new climate action targets ‘Panchamrit’ by India included:
a Net Zero target for India by the year 2070 installing non-fossil fuel electricity capacity of 500 GW by 2030 sourcing 50 per cent of energy requirement from renewable by 2030 reducing 1 billion tonnes of projected emissions from now till 2030 and achieving carbon intensity reduction of 45 per cent over 2005 levels by 2030 PAT scheme and carbon trading: Perform Achieve and Trade (PAT) scheme is a flagship programme of Bureau of Energy Efficiency under the National Mission for Enhanced Energy Efficiency (NMEEE). The PAT Scheme is a regulatory instrument to reduce the specific energy consumption in energy intensive industries.
Science-based targets initiative (SBTi): SBTi drives ambitious climate action in the private sector by enabling companies to set science-based emissions reduction targets. The SBTi defines and promotes best practice in emissions reductions and net-zero targets in line with climate science.
Logistics – PM Gati Shakti: Logistics cost contributes about 30 per cent of the total cost of the cement prices. The Prime Minister launched PM Gati Shakti-National Master Plan for Multi-modal Connectivity, essentially a digital platform to bring 16 Ministries including Railways and Roadways together for integrated planning and coordinated implementation of infrastructure connectivity projects.
Lead IT initiative: For promoting low-carbon transition especially in the hard-to-abate sectors like iron and steel, aluminum, cement and concrete, petrochemicals, fertilisers, bricks, heavy-duty transport, etc. through active participation of private sector companies, Government of Sweden and India launched an initiative ‘Leadership for Industry Transition (Lead IT)’ at the UN Climate Action Summit in New York in 2019. Stockholm Environment Institute hosts the Secretariat of Lead IT. Under
the Lead IT initiative, preparation of the sectoral roadmap for the cement and steel sector in India has been undertaken.
National Hydrogen Mission: The Mission aims to aid the government in meeting its climate targets and making India a green hydrogen hub. This will help in meeting the target of production of 5 million tonnes of green hydrogen by 2030 and the related development of renewable energy capacity.
Circular economy: The Government has been actively formulating policies and promoting projects to drive the country towards a circular economy. It has already notified various rules, such as the plastic waste management rules, e-waste management rules, construction and demolition waste management rules, metals recycling policy, etc.
National Coal Gasification Mission: Coal gasification is considered as a cleaner option compared to burning of coal. Gasification facilitates utilisation of the chemical properties of coal. SynGas produced from Coal gasification can be usable in producing Synthetic Natural Gas (SNG), energy fuel (methanol and ethanol), ammonia for fertilisers and petro-chemicals. These products will help move towards self-sufficiency under Atmanirbhar Bharat Abhiyaan. Ministry of Coal, Government of India has taken initiative for utilising coal through coal gasification to achieve 100 MT coal gasification by year 2030.
Futuristic technologies
The following futuristic technologies are expected to be developed and adopted by the Indian cement industry in the years to come Carbon capture and storage/utilisation Oxy fuel in the carbon capturing Algal growth promotion and use of biofuels
- Nanotechnology in cement
- Concentrated solar thermal calcination
- Aero acoustics grinding
- Beta-mill
- Futuristic low temperature clinker system
Novel cement system
New cement systems, listed below, using various varieties of waste are being explored extensively in India:
- Portland limestone cement
- Portland composite cement (fly ash and limestone based)
- Geo-polymer cements
- Reactive belite and calcium sulphoaluminate-based cements
- Calcined clay-based cement
- Low lime and low energy cements
ABOUT THE AUTHOR:
Dr BN Mohapatra is presently working as Advisor and Consultant to Ultratech Cement Ltd, Mumbai HO. Prior to this, he was the Director General of NCCBM. He is a PhD in Cement Mineral Chemistry and presently pursuing his Doctorate in Science, with 13 years of research experience and 22 years of industry experience. He has a strong academic relationship with premier research institutes.
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Economy & Market
Fornnax Names Lukas Baur as Authorised Service Partner to Bolster EU Operations
Published
1 day agoon
July 23, 2026By
admin
Strapline: Fornnax Technology has appointed NOBA Maschinenservice’s Lukas Baur as its authorised service partner for the European Union, strengthening its commitment to delivering fast, reliable, and localised after-sales support across the region.
Fornnax Technology, a leading manufacturer of industrial shredding solutions, has announced the appointment of Mr. Lukas Baur of NOBA Maschinenservice as its authorised service partner for the European Union. The partnership, formalised under the authorisation of Fornnax CEO Mr. Jignesh Kundaria, reinforces the company’s commitment to providing dependable, localised service support to its expanding customer base across Europe.
Strengthening Service Through Proven Expertise
With over two decades of experience in servicing, maintaining, and overhauling industrial shredders, Mr. Baur brings extensive technical expertise to the partnership. His capabilities span welding, hardfacing, shaft and knife rebuilding, complex assembly, hydraulics, and complete electrical engineering services, delivered in collaboration with a trusted partner company based in Halle/Saale.
Operating from Worbis, Germany, Mr. Baur is strategically positioned to provide emergency support across the European Union within 24 hours, covering an operational radius of approximately 1,000 kilometres.
Supporting this capability is a well-equipped service infrastructure comprising 12 Mercedes Sprinter service vans, a team of 24 skilled technicians, specialised bearing-change tools, a fully equipped hydraulic workshop, and a 1,000-square-metre facility with a five-ton crane track. Together, these resources position his team to manage the complete spectrum of Fornnax’s European service requirements efficiently and reliably.
Partnership Driven by Industry Insight
Having spent years servicing Eldan, Lindner, and Vecoplan shredders across the European recycling industry, Mr. Baur’s decision to collaborate with Fornnax is rooted in his understanding of market needs and customer expectations. His experience has provided valuable insight into what recycling plant operators require—not only from their machinery but also from the service teams supporting them.
According to Mr. Baur, Fornnax’s reputation for robust machine construction, superior wear protection, and maintenance-friendly design made the partnership a natural fit.
The collaboration comes at a time when Europe’s tyre recycling industry is facing mounting challenges, including rising cost pressures, shrinking margins, delayed investments, and a shortage of skilled labour. Mr. Baur believes these conditions reinforce the need for technically strong service partners capable of delivering rapid, dependable support.
Commenting on the partnership, he said, “Fornnax, with its exceptional price-performance ratio and superior quality, has the potential to become a market leader in Europe. We would like to be their service partner in this journey.”
Comprehensive Support Across the Equipment Lifecycle
As Fornnax’s authorised service partner, Mr. Baur will oversee the complete lifecycle support of the company’s equipment throughout the European Union. His responsibilities will include installation, commissioning, preventive maintenance, emergency repairs, and spare parts support across mechanical, hydraulic, and electrical systems.
Looking ahead, he also plans to develop a centralised spare parts distribution hub for European customers, particularly if Fornnax establishes a warehouse facility in Worbis to facilitate faster deliveries. To further strengthen service coverage, Mr. Baur intends to expand operations by adding two to three additional service teams and vehicles each year, progressively increasing capacity across the continent.
A Shared Commitment to Customer Excellence
Highlighting the strategic importance of the partnership, Mr. Jignesh Kundaria, Director and CEO of Fornnax, said:
“We strongly believe that by continuously improving our service quality and customer satisfaction index, we can build long-term relationships with our customers. Higher customer satisfaction leads to greater trust, which significantly increases repeat orders and ultimately drives sustained growth in our sales revenue.”
This customer-first philosophy underpins Fornnax’s strategy of building a dedicated European service partner network instead of relying solely on remote support. With Mr. Baur joining this network, customers across the European Union will benefit from faster response times, expert technical assistance, and dedicated on-ground support from a partner with extensive experience in high-throughput shredding operations.
Mr. Baur’s appointment also reflects Fornnax’s broader ambition to establish itself as the preferred shredding solutions provider for the European recycling industry, marking another important milestone in the company’s international growth strategy.
Concrete
Nuvoco Vistas launches Limla cement plant, expands Gujarat footprint
Published
2 weeks agoon
July 13, 2026By
admin
Nuvoco Vistas opens a 2 MMTPA grinding unit at Limla, entering Gujarat and advancing its target of 35 MMTPA capacity by FY 2028.
Surat (Gujarat)
Nuvoco Vistas Corporation Ltd, a part of Nirma Group and one of India’s leading building materials company, has inaugurated the Limla Cement Plant in Surat (Gujarat), one of Vadraj Cement Limited’s (VCL) principal manufacturing facilities. The commissioning represents a key milestone in Nuvoco’s acquisition and restoration of VCL, while supporting the company’s expansion across the Western Indian cement market.
Vadraj Cement Limited is a subsidiary of Nuvoco Vistas Corporation Limited and has installed cement capacity of 6 MMTPA across its assets. The Limla inauguration therefore represents the first operational step in the acquired platform’s wider revival, while the Kutch facilities provide clinker supply, mineral security and coastal logistics support for the western business.
Nuvoco completed its acquisition of Vadraj Cement Limited, then under the Corporate Insolvency Resolution Process, after paying a consideration of Rs 1,800 crore in June 2025. VCL’s asset portfolio comprises a clinker unit at Kutch and a grinding unit at Limla in Surat. It also includes high-quality captive limestone reserves and a captive jetty at Kutch, supporting more efficient logistics. Following the takeover, Nuvoco began an extensive programme of restoration, refurbishment and expansion at both locations, leading to the commissioning of the Limla plant.
The Limla Cement Plant is expected to support a phased increase in sales volumes across Gujarat. It will also help Nuvoco supply neighbouring markets in Western Maharashtra and release cement capacity from its northern plants, which can consequently be redirected towards markets in North India. The plant will manufacture a full portfolio comprising Ordinary Portland Cement, Portland Slag Cement, Portland Pozzolana Cement and Portland Composite Cement. It will additionally produce the complete Nuvoco Duraguard range, including the premium Nuvoco Duraguard Microfibre product. The acquisition is also expected to generate operational synergies with Nuvoco’s existing plants at Nimbol and Chittorgarh in Rajasthan, improving logistics optimisation and market reach across important regional markets.
The grinding unit at the Limla Cement Plant was completed ahead of schedule, with 2 MMTPA of capacity now inaugurated to expand Nuvoco’s operating scale and customer reach. After Vadraj Cement’s assets become fully operational, plants in North and West India are expected to account for nearly 40 per cent of Nuvoco’s total cement capacity. This will broaden the company’s manufacturing network, strengthen access to high-growth markets and support its plan to increase consolidated cement capacity to 35 MMTPA by FY 2028, reinforcing its longer-term growth strategy.
Commenting on the development, Jayakumar Krishnaswamy, Managing Director, Nuvoco Vistas Corp Ltd, said: “The inauguration of the Limla Grinding Unit in Surat is an important milestone in Nuvoco’s growth journey and demonstrates our commitment to disciplined, value-accretive expansion. Gujarat is strategically significant for Nuvoco, with substantial opportunities arising from infrastructure investment, industrial growth, rapid urbanisation and continuing demand from the housing and construction sectors. The facility strengthens our regional footprint, improves operational flexibility and increases our ability to serve customers across northern and western markets with greater reliability and efficiency.”
He added: “Through the Vadraj acquisition, we have refurbished and restarted a strategically important asset, returning it to operations in record time through strong execution and collaboration between teams. The achievement demonstrates our ability to create value from acquired assets, fulfil our commitments and retain the confidence of stakeholders. It also highlights the strength of our project delivery capabilities and our continued focus on building sustainable, profitable growth over the long term.”
Nuvoco Vistas Corporation Limited is a building materials company whose vision is to build a safer, smarter and more sustainable world. It is among the leading players in East India and has a significant presence across North and West India. Nuvoco began operations in 2014 with a greenfield cement plant at Nimbol, Rajasthan. It later acquired Lafarge India Limited, which had entered India in 1999, followed by Emami Cement Limited in 2020 and Vadraj Cement Limited in April 2025. The company has also announced an expansion in eastern India through a new grinding mill at the Arasmeta Cement Plant, supported by several debottlenecking programmes involving equipment upgrades, process improvements and internal capacity initiatives. These developments place Nuvoco on track to achieve total cement capacity of approximately 35 MMTPA. The company reported total income of Rs 11,362 crore in FY 2025-26, reflecting its continuing growth trajectory.
Nuvoco operates a diversified portfolio across three segments: Cement, Ready-Mix Concrete and Modern Building Materials. Its cement portfolio includes Concreto, Duraguard, Double Bull, PSC, Nirmax and Infracem, covering Ordinary Portland Cement, Portland Slag Cement, Portland Pozzolana Cement and Portland Composite Cement. Its pan-India RMX business provides value-added products under Concreto for performance concrete, Artiste for decorative concrete, InstaMix for ready-to-use bagged concrete, X-Con covering M20 to M60 grades, and Ecodure for specialised green concrete. Nuvoco has supplied materials to projects including the Mumbai-Ahmedabad Bullet Train, Birsa Munda Hockey Stadium in Rourkela, Aquatic Gallery at Science City in Ahmedabad, and metro railway projects in Delhi, Jaipur, Noida and Mumbai.
Concrete
Green Construction Through Cement Innovation
Published
3 weeks agoon
July 2, 2026By
admin
Indian Cement Review (ICR) and Fuller Technologies brought industry, policy and technology leaders together to discuss how cement innovation can drive green construction at scale, writes Rakesh Rao.
India is building at a pace few countries can match. Highways, airports, housing, logistics parks, industrial corridors and urban infrastructure are reshaping the country’s economic geography. But beneath this growth story lies a difficult question: can India continue to build at scale without locking itself into a high-carbon future?
That question formed the core of an online panel discussion titled “Driving Green Construction Through Cement Innovation”, organised by Indian Cement Review (ICR) in association with Fuller Technologies as the Presenting Partner on June 25, 2026. The webinar brought together experts from cement technology, R&D, global industry platforms, building performance policy and international development cooperation to examine how low-carbon cement and material innovation can accelerate India’s green construction transition.
The discussion came at a crucial time. India has committed to achieving net-zero emissions by 2070 and reducing the carbon intensity of its economy by 45 per cent by 2030. At the same time, the country’s construction sector is expanding rapidly, driven by urbanisation, infrastructure development, housing demand and industrial growth. Cement, as one of the most widely used construction materials, sits at the heart of this transition. It is indispensable to development, but also central to the challenge of reducing embodied carbon in buildings and infrastructure.
Moderated by Nitika Krishan, Senior Urban Infrastructure and Sustainable Policy Consultant, the panel featured:
- Kiranmai Sanagavarapu, Director, Low Carbon Solutions, Fuller Technologies;
- Dr Hemantkumar Aiyer, VP and Head R&D, Nuvoco Vistas Corp Ltd;
- Devika Wattal, Innovation Lead, Global Cement and Concrete Association (GCCA);
- Dr Sunita Purushottam, MD, GBPN India (Global Buildings Performance Network); and
- Vaibhav Rathi, Senior Technical Advisor, GIZ (the German Agency for International Cooperation)
Setting the tone for the discussion, Nitika Krishan underlined the scale of the challenge before the sector. “The question before us is no longer whether we build, but how we build sustainably,” she said. She pointed out that construction accounts for nearly 40 per cent of global energy-related carbon emissions when both operational and embodied carbon are considered. Cement production, she added, remains one of the hardest industrial processes to decarbonise.
For India, this is not merely an environmental issue. It is a development issue, a competitiveness issue and increasingly, a market issue. As one of the world’s largest cement producers and among the fastest-growing construction markets, India’s material choices will influence the carbon trajectory of its built environment for decades. As Krishan observed, sustainability solutions in economies such as India must not remain limited to laboratory success. They must be scalable, commercially viable and practical at national level.
The innovation gap: From technology to market
Experts believe that there is a need to bridge the innovation gaps for making decarbonisation in cement and concrete scalable. Devika Wattal of GCCA, explained, “The starting point must be the core cement manufacturing process itself. The first and foremost is the heart of our process, the heart of cement manufacturing. How do we reduce clinker? That is always a topic where industry is working very intrinsically.”
Clinker reduction remains one of the most important pathways for lowering emissions in cement. Since clinker production is energy-intensive and chemically emits carbon dioxide, reducing the clinker factor through supplementary cementitious materials (SCMs), blended cements and new chemistries can have a significant impact. Wattal also noted that carbon capture, utilisation and storage (CCUS) will have a role, though it may not be the first lever for all markets.
However, she stressed that innovation cannot stop at technology development. A solution that works in the lab must also be adaptable to industry, scalable in production and acceptable in construction practice. “It is important for that innovation to be adaptable, to be scalable, and so that it can be executed in real time,” she said.
Wattal also called for stronger enabling systems around innovation. These include performance-based standards, product-level embodied carbon databases and clearer frameworks for evaluating green materials. Without these, low-carbon cement products may struggle to compete with conventional materials in procurement and design.
R&D must balance carbon, cost and performance
Bringing in the R&D perspective into the discussion, Dr Hemantkumar Aiyer of Nuvoco Vistas emphasised that low-carbon cement development cannot be treated as a single-variable exercise. Cement must perform in real construction conditions. It must deliver strength, durability, consistency and cost competitiveness, while also reducing carbon.
“The root of understanding and balancing all these aspects lies in materials, and knowing the materials,” he said.
According to Dr Aiyer, R&D teams must understand the variability of raw materials such as fly ash, slag and clinker. Different sources produce different material behaviours. This makes mix optimisation, material characterisation and processing-property relationships critical. When performance is affected, cement manufacturers must understand how strength enhancers, admixtures and other performance chemicals interact with the material system.
He also linked material science with process efficiency. Clinkerisation takes place at extremely high temperatures, around 1,400 to 1,450 degrees Celsius. Any improvement in raw mix design, process control or energy optimisation can, therefore, help reduce emissions and cost. Dr Aiyer pointed to artificial intelligence-based optimisation, Cement 4.0 tools and advanced software as important enablers for real-time process and material control.
“The more you understand the materials, the more you can control it,” he said.
LC3: The promise is proven, the sequencing is not
Limestone calcined clay cement, commonly referred to as LC3, has attracted global attention because it can reduce clinker content significantly by using calcined clay and limestone while maintaining performance in many applications. Kiranmai Sanagavarapu of Fuller Technologies said the technology itself has already moved beyond proof of concept. Fuller Technologies has worked with calcined clay technology for nearly two decades and has seen plants running in France and Ghana. These plants, she said, are meeting local and national specifications, while the economics are beginning to make sense.
“The calciner is performing, the economics is stacking up, it is making business sense to produce,” she said.
But if the technology is viable, why has adoption not scaled faster? For Sanagavarapu, the answer lies in project sequencing. Too often, clay characterisation happens after equipment is specified. This, she warned, is a backward approach because calciner design depends on clay mineralogy, kaolinite content, iron levels, reactivity, moisture and other variables.
“If you don’t know what your deposit looks like before you commit for the equipment, you are, in a way, going blind into designing,” she said.
She also identified permitting and plant integration as major bottlenecks. Environmental clearances, mining permissions and local regulatory approvals must begin early. Similarly, calcined clay must be integrated into existing grinding, blending and logistics systems from the design stage, not treated as an afterthought during commissioning.
India already has IS 18189:2023 standard for LC3, but Sanagavarapu pointed out that the standard is not yet visible enough in procurement documents. “The gap between what is technically being permitted and what the procurement is asking is the single biggest bottleneck,” she said.
In her view, successful scale-up depends on getting the sequence right: clay characterisation first, permitting in parallel, standards aligned with construction, and integration built into plant design.
India’s LC3 journey: Progress, but demand remains thin
Providing details of India’s LC3 commercialisation experience, Vaibhav Rathi of GIZ noted that JK Cement carried out the first commercial production of LC3 at its Rajasthan plant, followed by JK Lakshmi Cement three months later. These initiatives were supported by the International Climate Initiative of the Government of Germany, with IIT Delhi contributing deep institutional knowledge on LC3 research and BIS certification.
Rathi said India’s early experience has produced clear lessons. One of the biggest was the need to build capacity among regulators. While BIS certification existed, State Pollution Control Boards were unfamiliar with the technology and unsure about the approval pathway.
“The capacity building is not just needed amongst the producer and the users of the cement, but also the regulators who are working with this technology for the first time,” he said.
He also highlighted the need for better information on China clay deposits. Since China clay is currently classified as a minor mineral, centralised data on availability, quality and location is limited. If cement manufacturers are to adopt LC3 at scale, stronger mineral intelligence will be important.
The third issue is demand. LC3 has already been used in projects such as Palava City in Mumbai and Noida International Airport, but these remain limited examples. “It is in a chicken and egg situation,” Rathi said. “Cement companies are saying we need more demand, and users are saying there is not enough cement available.”
Public procurement, he suggested, could help break this cycle. If agencies such as CPWD and other public bodies begin testing, accepting and specifying LC3, it could create the market confidence needed for cement companies to invest in production and storage.
Building codes must catch up with innovation
Dr Sunita Purushottam of GBPN India argued that material choices will determine built environment emissions over the long term, but India’s current policy signals remain fragmented. Although LC3 has received BIS recognition, she pointed out that building codes, municipal bylaws, schedules of rates and sustainability codes do not yet provide uniform guidance on low-carbon cement.
“The current cement regulations are largely prescriptive and favouring traditional materials,” she said. This limits the ability of alternative materials to compete on performance, durability and emissions.
Dr Purushottam also raised the issue of taxation. Cement, including LC3, currently falls under the same GST bracket as conventional cement. A differentiated tax structure, she argued, could help accelerate market adoption. “In order for the market to demand LC3, that differentiation in the GST could go a long way,” she said.
She noted that green building certifications such as IGBC and GRIHA are already creating demand for low-carbon materials by assigning points for embodied carbon and sustainable material use. However, she said large-scale adoption will require regulatory mandates, particularly through building codes and state-level notifications.
She also cautioned that low-carbon cement alone does not solve the entire building performance problem. A material may reduce embodied carbon, but the operational carbon of a building depends on thermal performance, design, insulation and energy use. “The energy part has two elements,” she said. “One is the embodied carbon of the material itself, and the other is the operational carbon.”
Collaboration is the bridge between invention and impact
Wattal said GCCA sees innovation as a strategic priority and works through platforms that connect industry with academia and start-ups. “There is no way we will decarbonise our sector without innovation,” she said.
However, she stressed that research must be connected to actual industry challenges. Innovations developed in isolation may fail when they encounter real-world barriers such as raw material variability, plant integration, cost, standards and finance. Start-ups, too, need industry mentorship and scale-up pathways.
Wattal also flagged the importance of finance. Even strong technologies may struggle to attract investment if there is no common understanding of bankability. “We have always put projects into, is this a bankable project? But the definition of a bankable project has never been defined,” she said.
For India, she saw strong potential in its academic and start-up ecosystem, but said the challenge lies in alignment and prioritisation. The country has the research base, industrial capacity and market size. What it now needs is a coordinated route from innovation to deployment.
There is a practical concern for cement manufacturers: how can existing plants be adapted for lower emissions without compromising reliability or commercial viability?
Kiranmai Sanagavarapu addressed, “The reliability risk in calcined clay retrofit is definitely real, but it is almost always self-inflicted. The risk arises when a new process is added to an existing circuit without properly redesigning grinding and blending configurations.”
Existing cement plants, she explained, can take two broad routes. The first is external sourcing of calcined clay combined with mill optimisation. This requires lower capital investment and can potentially move in 12 to 18 months if other conditions are in place. It may reduce emissions by around 20 to 30 per cent. The second route is integrated calcination on site, which requires higher capital expenditure and longer lead times, but provides greater control over quality, supply and emissions reduction potential.
For Sanagavarapu, the principle is simple: low-carbon retrofits must be designed with intent. “Design it with an intent properly from the start. Start in the market conditions where the economics are already working,” she said.
Circularity: The overlooked advantage
According to Vaibhav Rathi, fly ash and slag are already well established in cement and construction (C&D), but construction and demolition waste remains underutilised. “C&D waste is a growing business opportunity which not many have taken up,” he said. India’s continuous construction and demolition activity creates huge volumes of waste, much of which contributes to air pollution, land degradation and material inefficiency. With the right processing and standards, this waste can be converted into useful construction products.
Rathi also pointed out that LC3 has a circular economy dimension that is often overlooked. It can use low-grade kaolin-rich clay left behind after high-grade clay is extracted for other applications. “LC3 is not only a low-carbon solution, but also a circular economy solution,” he said.
At the same time, he cautioned that LC3 in India is not yet cheap because it has not reached scale. Site-specific techno-commercial feasibility studies, supported jointly by development agencies and industry, could help companies assess whether LC3 production makes technical and financial sense at a given location.
Dr Purushottam added that India must address both low-carbon cement and construction waste together. “Both low-carbon cement and C&D waste go hand in hand. India does not have an option but to work on both,” she said.
Dr Aiyer called for policy shifts from both government and industry, including preferential purchasing of sustainable materials, minimum supplementary cementitious material requirements in public and public-private projects, and faster regulatory implementation. “If we can fast-track the regulatory standards and their implementation on the ground, that is the way to go,” he said.
From green ambition to green construction
Cement innovation is no longer only about chemistry. It is about systems. Low-carbon cement will scale only when technology, standards, procurement, finance, regulation, education and construction practice move together.
LC3 and other low-carbon technologies have shown promise. India has early commercial examples, strong research capability and growing market interest. But mainstream adoption will depend on whether demand can be created, regulators can be capacitated, standards can be embedded in procurement, and manufacturers can see a clear business case.
For a country building at India’s scale, the opportunity is enormous. Cement will continue to be central to infrastructure and urban development. The challenge now is to ensure that the cement used in India’s growth story carries a lower carbon burden.
- Rakesh Rao
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