Concrete
Ignore at Your Own Peril
Published
3 years agoon
By
admin
ICR looks at the impact of various methods such as use of alternative fuel and raw materials, tackling the emissions issue and encouraging carbon capture in a bid to make green cement and progress towards Net Zero goals.
The analytical journey is long past its prime when it comes to diagnosing the emission problem pertaining to cement and concrete. There is no denying the fact that the problem is too big.
If concrete was a country, it would be the biggest production centre as all other commodities put together will not even come close to the 30 billion tonnes of concrete that the world produces every year. If cement was a country, it would be the third highest emitter of CO2 in the world. But the efforts have been to find an approach that would force corporations to either limit and progressively reduce over time the impact on the environment through a slew of measures directed at reducing the carbon footprint of cement.
The chart attached shows the distribution of the CO2 emission based on the processing steps for making cement from limestone.
United efforts
The last five years has seen acceleration in the efforts towards finding significant pathways for reducing carbon footprint in cement production around the world. The progress on substantial reduction has been positive with concentration in the following areas:
- Focus on Calcination Emission: Reducing clinkering by adding alternative materials that can replace clinker
- Focus on Fossil Fuel Emission: Efficiency improvement in a number of areas that reduce the use of fossil fuels per unit of cement output, together with the use of alternative fuel.
Under the first category, we see a rise in the use of fly ash from the coal-based power plants that replace clinker during grinding and the percentage increase in the last five years on this count would be around 2 per cent (31 per cent moving to 33 per cent with the balance being clinker). Alternatively, the use of blast furnace slag has seen a rise of 5 per cent (50 per cent moving to 55 per cent with the balance being clinker). Both of these actions have taken the total CO2 emission to 860 kg per tonne for some of the best operating plants of the world.
The challenges for the future in this regard is that fly ash will remain a constantly depleting resource as all fresh investments into coal fired power plants are scrutinised and it is most likely that the current generation of fly ash will not move up in the coming years. This poses some challenges for the future as the emission pathways that consider use of fly ash as a potential lever for replacing clinker would have to find new pathways as a countermeasure. The use of blast furnace slag also has the same problem brewing at large as steel production is slated for overall sustainability improvement measures, which ordains reduced output of blast furnace slag as a definitive measure.
Tackling the emissions issue
This leaves the focus on alternative use of other non-fossil fuels for producing cement, where the actual progress is almost entirely hinged on renewable sources producing electricity that would be used for clinkerisation as well as for grinding. While the latter has progressed well, the former is still at a stage where a handful of cement units have signed up for the alternative technology in kilns.
Most of the technologies so far have progressed little towards solving the real issue of emission stemming from the clinkerisation process itself, as the molecular structure change from limestone to clinker involves generation of CO2 quite inevitably. The solutions therefore looked at ways of capturing carbon from the emission process, somewhat similar to the photo-synthesis process in plants as Professor Dr Aldo Seinfeld from ETH Zürich has shown. However, the progress is still at a laboratory scale and to find an economic solution will still take some time. For example, most cement kilns today produce close to 2.5 million tonnes of clinker and the sizing is only moving up, which means the amount of CO2 generation from these kilns per year would be close to 2 million tonnes. To get CO2 capturing systems to scale up to these levels would need many years.
Putting carbon to good use
The question is how can we help to scale up the capacity to sequester and store carbon from the emissions from cement kilns? The problem needs to be approached scientifically to make the process economical, which is where the current focus is. But more than the laboratories where this progress is well grounded, we need the cement corporations to set aside funds for investments that need to be made for all future kilns that have the provisions for carbon capture.
The next question is to look at how the stored carbon can be put to use in production of concrete? This requires more than the usual scientific research, as the supply chain of concrete making must factor in ways and means of finding pathways for using stored carbon in the concrete making. The Economist reports that companies like CarbonCure, a Canadian firm, are doing this. They have fitted equipment, which injects CO2 into ready-mixed concrete to more than 400 plants around the world. Its system has been used to construct buildings that include a new campus in Arlington, Virginia, for Amazon, an online retailer (and also a shareholder in CarbonCure), and an assembly plant for electric vehicles, for General Motors in Spring Hill, Tennessee.
Piloting new technologies
One of the other areas of focus has been to find an alternative route to clinkerisation that is based on electricity.
Calix, based in Sydney, Australia, is working on an electrically powered system, which heats the limestone indirectly, from the outside of the kiln rather than the inside. That enables pure CO2 to be captured without having to clean up combustion gases from fuel burnt inside the kiln—so, if the electricity itself came from green sources, the resulting cement would be completely green.
A pilot plant using this technology has run successfully as part of a European Union research project on a site in Belgium operated by Heidelberg Cement, a German firm that is one of the world’s biggest cement-makers. A larger demonstration plant is due to open in 2023, in Hanover, to help scale up the technology.
Almost all of this would need sacrifice from many stakeholders, as the cost of making cement and concrete will rise as investments have to be made in new technology. Bill Gates’ book, ‘How to Avoid a Climate Disaster,’ projected an increase of the cement making cost from the current $125 per tonne to a range of $219 to $300 if the CO2 emissions have to be taken care of for achieving Net Zero. However, the price of cement is already much above $125 per tonne even without factoring any of the carbon capture and sequestration measures, so the real rise could be much more.
A community of stakeholders, starting with the corporation making cement, the community near the cement kilns, the customers, the suppliers and the government, all have a role to play to find a solution how this increase in costs would have to be borne and distributed. Carbon taxes have always been the time-tested path to decarbonisation. Stringent use of taxes as a potent tool has seen better progress, especially in Europe, where some serious progress has happened. Recycling of cement from the demolition waste is one great example.
The best example of coordination and collaboration is captured in the initiatives of the world’s largest kiln near Wuhan, where one would witness how the city municipality came forward to proactively recycle the entire city municipal waste into the kiln of the cement unit situated on the Yangtze river. The waste is transported by barges and through a pipeline taken directly into the cement kiln. Such collaboration could replace the hard stand of putting penalties, which after all could be regressive at times.
-Procyon Mukherjee
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ACC To Expand Cement Capacity Amid Strong Infrastructure Demand
Chairman signals calibrated growth and sustainability focus
Published
1 hour agoon
June 26, 2026By
admin
ACC will continue to expand its cement capacity in a calibrated manner, deepen its ready-mix concrete (RMC) footprint and accelerate the adoption of low-carbon technologies, the company chairman conveyed in the latest annual report. The note emphasised a balanced and disciplined approach as the business pursues growth while maintaining environmental safeguards.
He argued that the long-term growth outlook for the Indian economy remains strong but that demand conditions in the near term were likely to stay moderate, necessitating cautious expansion. He pointed to India’s relatively low per capita cement consumption compared with global averages as an indicator of significant long-term potential and highlighted the rise in public capital expenditure to Rs 12 trillion (Rs 12 tn), which he said accounted for about four point four per cent of the GDP.
Against this backdrop, ACC and the wider Adani Cement business are positioning themselves as integrated building materials solution providers rather than traditional commodity suppliers, prioritising capability creation over consolidation. The chairman framed cement as the ingredient and concrete as the performance and said that infrastructure and real estate development increasingly demand engineered solutions delivered at site.
He described how deeper integration across energy, logistics and digital systems is intended to improve responsiveness and efficiency across manufacturing, transport and market operations. The company intends to strengthen technical engagement, mix optimisation and application support to improve project timelines, reduce wastage and enhance structural durability while embedding data analytics and predictive systems.
On sustainability, ACC affirmed its commitment to reducing its environmental footprint through greater use of blended cement, renewable energy, alternative fuels and improved thermal efficiency, presenting industrial growth and environmental responsibility as parallel objectives. The message positioned the group to supply engineered concrete solutions at the point of application as it scales capacity and service offerings.
Concrete
Ambuja Sees Cement Demand Easing To Around Five Per Cent In FY27
Company Cites Housing, Infrastructure And Government Capex
Published
4 days agoon
June 22, 2026By
admin
Ambuja Cements has said in its latest annual report that cement demand in India is likely to moderate to around five per cent in fiscal year twenty seven, marking a slowdown from the estimated six point five to seven point five per cent growth anticipated for fiscal year twenty six. The company described this as a transition to a more measured pace of expansion after several years of strong momentum in the sector.
It said that underlying demand drivers such as housing, infrastructure development, urbanisation and government capital expenditure remain intact and are expected to sustain cement consumption across regions. The report noted that global geopolitical uncertainties and weather risks, including forecasts of a below normal monsoon, could influence near term demand, while emphasising that the longer term infrastructure story for India continues to provide a solid foundation for the sector.
Industry observers have said that the sector may move towards mid single digit growth rates in fiscal year twenty seven after stronger performances in recent years. The company outlined a calibrated expansion strategy with capacity additions phased to match project pipelines, regional demand patterns and market absorption, seeking to avoid oversupply and pressure on pricing.
Ambuja has crossed the 100 million tonnes per annum capacity milestone (100 mn t per annum) following acquisitions and organic expansion, strengthening its position in the competitive market. The outlook in the report broadly aligns with other market assessments that placed demand at around five per cent in fiscal year twenty five, a recovery to six point five to seven point five per cent in fiscal year twenty six and an easing in fiscal year twenty seven as capacity increases. Executives remain focused on long term demand fundamentals driven by infrastructure and housing.
Gears, drives, and motors have evolved from essential mechanical components into strategic enablers of reliability, efficiency, and sustainability in modern cement plants. ICR explores how advanced motion technologies, predictive maintenance, digitalisation, and intelligent drive systems are helping cement manufacturers reduce downtime, optimise energy use, and build future-ready operations.
As the Indian cement industry prepares for another phase of capacity expansion, the focus is shifting from merely increasing production volumes to improving operational efficiency, reliability, and sustainability. According to industry estimates, India is expected to add nearly 160–170 million tonnes of cement capacity between FY26 and FY28, driven by infrastructure investments, urbanisation, and housing demand. In this environment, gears, drives, and motors have emerged as critical enablers of productivity, forming the backbone of every major process from raw material extraction and grinding to clinker production and cement dispatch.
Motors alone account for nearly 60 per cent to 70 per cent of industrial electricity consumption globally, according to the International Energy Agency (IEA), while rotating equipment failures remain among the leading causes of unplanned downtime across heavy industries. In cement plants, where equipment operates under high loads, extreme dust conditions, elevated temperatures, and continuous-duty cycles, the performance of gears, drives, and motors directly influences energy consumption, maintenance costs, plant availability, and overall profitability. As digitalisation and Industry
4.0 technologies gain momentum, these systems are evolving from passive mechanical components into intelligent assets capable of delivering real-time operational insights.
Why gears, drives, and motors are the backbone of cement plant operations
Every major process in a cement plant depends on the seamless operation of gears, drives, and motors. Raw mills, vertical roller mills, crushers, kiln drives, conveyor systems, fans, and clinker coolers all rely on rotating equipment to maintain continuous production. A failure in any one of these systems can disrupt entire process chains, highlighting their strategic importance.
Modern cement plants process thousands of tonnes of material daily, requiring equipment capable of transmitting enormous torque while maintaining precision and reliability. Kiln drives and grinding systems, in particular, operate under some of the highest mechanical loads found in industrial manufacturing. The ability of gears and motors to withstand these conditions directly impacts plant throughput and production stability.
Satish Maheshwari, Chief Manufacturing Officer, Shree Cement says, “Effective lubrication management remains one of the most critical factors in extending the lifespan of cement plant drive systems. Proper lubrication, supported by regular oil analysis, vibration diagnostics, and condition monitoring, helps minimise wear, prevent unexpected failures, and maintain the integrity of critical components such as gearboxes, motors, and drive assemblies. By identifying potential issues at an early stage, plants can move from reactive maintenance to a more proactive and reliability-focused approach.”
“Smart motors, intelligent drives, and next-generation gearboxes are set to redefine cement plant maintenance and performance. Equipped with embedded sensors, IoT connectivity, digital twins, and AI-driven diagnostics, these technologies enable real-time condition monitoring, predictive maintenance, and seamless digital integration. As the industry embraces Industry 4.0, smart drive systems will play a pivotal role in improving energy efficiency, reducing downtime, and optimising asset performance across the cement manufacturing value chain” he adds.
Industry studies suggest that rotating equipment accounts for a significant proportion of maintenance expenditure in process industries. Effective design, selection, and maintenance of gears, drives, and motors therefore have a direct influence on asset utilisation, operational efficiency, and total cost of ownership.
The cost of downtime: reliability challenges in rotating equipment
Unplanned downtime remains one of the most expensive challenges facing cement manufacturers. Industry estimates indicate that a major failure involving a critical gearbox, kiln drive, or grinding mill can result in production losses running into lakhs of rupees per hour, depending on plant capacity and operating conditions.
Sanjeev Arora, President – Motion Business & IEC LV Motors Division, ABB India says, “One of the most significant shifts taking place in industrial decision-making today is moving away from evaluating equipment based solely on upfront capital cost toward understanding total cost of ownership (TCO). In a typical motor system, the purchase price often represents only a small fraction of the total lifecycle cost however energy consumption, maintenance requirements, downtime and operating efficiency account for the vast majority of long-term operational expenses. For cement manufacturers operating in highly competitive markets, this distinction is critical.”
“A high efficiency motor paired with an appropriately configured variable speed drive may require a higher initial investment, but the long-term benefits are substantial. Reduced electricity consumption, lower maintenance needs, longer service intervals and improved process stability can deliver faster payback and stronger profitability over time” he adds.
Cement plants present a particularly challenging environment for rotating equipment. Dust ingress, thermal fluctuations, shock loads, vibration, shaft misalignment, and lubrication contamination contribute significantly to equipment degradation. Studies by SKF indicate that nearly 50 per cent of bearing failures are linked to lubrication issues and contamination, while improper alignment and vibration-related problems remain leading causes of gearbox and motor failures.
Energy-efficient motors and drives: unlocking operational savings
Energy is one of the largest operating expenses for cement manufacturers, often accounting for 25 per cent to 35 per cent of total production costs. Grinding operations alone can consume nearly 60 per cent to 70 per cent of a plant’s electrical energy, making energy-efficient motors and drives a strategic investment.
According to the International Energy Agency, high-efficiency motors combined with Variable Frequency Drives (VFDs) can reduce energy consumption by 20 per cent to 30 per cent in suitable applications. By matching motor speed and torque to actual process requirements, VFDs minimise unnecessary power consumption while reducing mechanical stress on equipment, improving both efficiency and reliability.
Advances in gearbox design and power transmission technologies
Modern gearbox technology has evolved significantly in response to the increasing demands of cement manufacturing. Advanced materials, case-hardened gears, optimised tooth profiles, improved surface finishing, and enhanced lubrication systems are helping reduce friction, wear, and thermal loading.
Girish Hanchate, Director – Industrial Market, India SKF India (Industrial) says, “Smart diagnostics are significantly improving the lifecycle of gears, motors, and other rotating equipment by enabling a shift from reactive maintenance to condition-based asset management. Hidden issues such as vibration anomalies, bearing defects, misalignment, and temperature fluctuations can quietly reduce plant throughput by 10 per cent to 20 per cent while increasing energy consumption long before a breakdown occurs. By leveraging advanced sensors, predictive analytics, machine learning, and real-time monitoring of vibration, temperature, and motor current, cement manufacturers can detect developing faults early, optimise maintenance schedules, and prevent costly secondary damage. This not only improves reliability but also supports energy efficiency and sustainability objectives.”
“The next major evolution in drive and bearing technology lies in the development of fully integrated smart mechanical ecosystems that combine high-performance bearings, advanced lubrication management, and digital intelligence. Sensor-enabled condition monitoring embedded directly within bearings and drive systems allows operators to capture critical operational data at the source, enabling predictive maintenance and real-time performance optimisation. Innovations such as SKF’s VA9A1 Spherical Roller Bearing series, engineered specifically for demanding cement applications such as crushers and kilns, demonstrate this trend. By increasing internal bearing space and optimising lubricant flow, these designs improve grease retention, reduce wear, minimise downtime, and create more resilient, energy-efficient rotating equipment systems for the future of cement manufacturing” he adds.
Manufacturers are increasingly focusing on compact, high-torque gearbox designs capable of delivering higher power density while maintaining service life. Innovations such as condition-monitored gear systems, improved sealing technologies, and modular gearbox architectures are simplifying maintenance while enhancing operational reliability.
Predictive maintenance, condition monitoring, and asset health management
The shift from reactive to predictive maintenance is transforming asset management across the cement industry. Technologies such as vibration monitoring, thermography, oil analysis, ultrasound testing, and motor current signature analysis are enabling operators to identify potential failures before they occur.
Research by Deloitte suggests that predictive maintenance can reduce breakdowns by up to 70 per cent and lower maintenance costs by 25 per cent. In cement plants, where shutdown windows are limited and equipment operates continuously, predictive maintenance offers a powerful tool for improving reliability and extending asset life.
Digitalisation, industry 4.0, and the rise of intelligent drive systems
Industry 4.0 technologies are redefining the role of gears, drives, and motors. Smart sensors embedded within motors, bearings, and gear systems can continuously monitor temperature, vibration, load, lubrication condition, and energy consumption.
Girish Hanchate says, “As the industry embraces automation, sustainability, and digital transformation, the importance of intelligent motion technologies will continue to grow. The convergence of advanced engineering, predictive maintenance, and Industry 4.0 solutions is creating a new generation of cement plants where reliability, efficiency, and sustainability work together to deliver long-term value. For cement manufacturers navigating increasing production demands and environmental expectations, investing in smarter gears, drives, and motors is no longer optional—it is a business imperative.”
Cloud-based monitoring platforms and Industrial Internet of Things (IIoT) architectures enable maintenance teams to access equipment health data remotely, improving visibility across geographically dispersed operations. Advanced analytics and
artificial intelligence are further enhancing fault detection capabilities, enabling more accurate maintenance planning.
The emergence of digital twins represents another significant development. By creating virtual replicas of physical assets, operators can simulate operating conditions, predict failures, optimise maintenance schedules, and improve lifecycle management decisions. These technologies are helping transform rotating equipment into intelligent assets that actively contribute to operational decision-making.
Building future-ready cement plants through smart motion technologies
The future of cement manufacturing will depend heavily on the ability to integrate mechanical reliability with digital intelligence. Smart motion technologies combine high-efficiency motors,
intelligent drives, condition monitoring systems, and automation platforms to create more responsive and efficient operations.
Sustainability goals are also accelerating investment in advanced motion technologies. Reduced energy consumption, improved equipment efficiency, and extended asset life contribute directly to lower carbon emissions and reduced resource consumption.
These benefits align closely with the industry’s decarbonisation objectives.
As capacity expansions continue across India, future-ready cement plants will increasingly prioritise reliability, flexibility, and data-driven decision-making. Organisations that successfully integrate smart motion technologies into their operations will be better positioned to reduce costs, improve productivity, and maintain a competitive advantage in a rapidly evolving market.
Conclusion
Gears, drives, and motors are no longer viewed solely as mechanical components; they have become strategic assets that influence every aspect of cement plant performance. Their reliability affects production continuity, their efficiency impacts operating costs, and their digital capabilities increasingly shape maintenance and operational strategies.
- –Kanika Mathur
ACC To Expand Cement Capacity Amid Strong Infrastructure Demand
Ambuja Sees Cement Demand Easing To Around Five Per Cent In FY27
Powering Cement Through Intelligent Motion
Liquid Intelligence
The Logistics Imperative
ACC To Expand Cement Capacity Amid Strong Infrastructure Demand
Ambuja Sees Cement Demand Easing To Around Five Per Cent In FY27
Powering Cement Through Intelligent Motion
Liquid Intelligence

