Economy & Market

Building Safety from the Ground Up

Published

7 months ago

August 5, 2025

admin

ICR explores how safety in the cement industry is evolving from a regulatory obligation to a strategic priority—driven by PPE compliance, digital tools, contractor management, and a safety-first mindset. Through a mix of technology, training, and behavioural change, Indian cement companies are laying the foundation for safer, more resilient workplaces.

The cement industry operates in one of the most high-risk industrial environments, where workers face extreme temperatures, high dust levels, heavy machinery, and hazardous materials. From quarrying to pyro-processing and dispatch, nearly every stage carries the potential for serious injury if not managed properly. According to the International Labour Organisation (ILO), over 2.3?million people die annually from work-related accidents or diseases worldwide, with cement manufacturing a notable contributor. In India, the Directorate General Factory Advice Service and Labour Institutes (DGFASLI) recorded over 3,000 industrial accidents in 2022, many linked to heavy-material industries like cement. Common plant hazards include mechanical failures, falls from height, electrical risks, chemical exposure, and fire or explosion threats. The Global Cement and Concrete Association (GCCA) reports that falls, machinery entanglement, and contractor-related incidents remain leading causes of fatalities globally.
Safety in cement is far more than compliance—it is a foundation of operational excellence, corporate responsibility, and worker dignity. Investment in safety equipment, training, and systems delivers measurable business value, from higher workforce retention to reduced downtime and stronger stakeholder trust. A 2021 International Finance Corporation (IFC) study found that companies with robust Environmental, Health, and Safety (EHS) frameworks had 10 to 15 per cent fewer shutdowns and up to 20 per cent higher productivity. In a capital-intensive sector with tight margins, a proactive safety culture is not a cost but a strategic asset.

Common hazards in cement manufacturing
Cement manufacturing is a complex, multi-stage process involving raw material extraction, grinding, pyroprocessing, cooling, and packaging—each phase bringing its own set of safety challenges. Workers in cement plants are routinely exposed to high levels of dust, heat, noise, mechanical hazards, heights, confined spaces, and chemical agents. For instance, dust from raw materials like limestone and clinker contains respirable crystalline silica, which can cause silicosis and other long-term respiratory issues if inhaled without proper protection. According to the Indian Council of Medical Research (ICMR), workers in dusty industrial environments are 3–5 times more likely to develop occupational lung diseases compared to other sectors.
Heat and noise exposure are especially acute in areas like kilns, clinker coolers, and grinding units, where operational temperatures can exceed 1400°C and ambient noise levels often surpass 90 decibels—well above the occupational exposure limits set by the Directorate General Factory Advice Service and Labour Institutes (DGFASLI). Extended exposure to such conditions without proper personal protective equipment (PPE) can lead to heatstroke, permanent hearing damage, and fatigue-induced errors, which increase the likelihood of accidents. A study published in the Journal of Occupational Health in 2022 noted that nearly 40 per cent of surveyed cement plant workers experienced early signs of noise-induced hearing loss, highlighting the urgent need for auditory protection and environmental noise control.
Raju Ramchandran, SVP and Head Manufacturing – Eastern Region, Nuvoco Vistas, says, “Cement manufacturing is an intense, high-temperature and operation-heavy process, where safety is paramount at every stage. Mining operations within the industry bring their own set of hazards, with strict adherence to Directorate General of Mines Safety (DGMS) guidelines being essential. Exposure to dust is another area of concern, necessitating advanced dust suppression systems and protective equipment to safeguard workers’ health. Electrical safety and proper energy isolation are also crucial, given the complexity of the equipment involved. At Nuvoco, we tackle these risks with a layered approach combining engineering controls, digital monitoring and rigorous safety protocols backed by continuous training and regular mock drills to ensure preparedness for any eventuality. Safety is an unwavering commitment to safeguarding everyone who works in and around our plants.”
Another major concern lies in working at heights, especially during equipment maintenance or installation of vertical structures such as preheaters and silos. Falls remain a leading cause of fatalities in the global cement industry, according to the Global Cement and Concrete Association (GCCA). In addition, confined spaces such as kilns, storage tanks, and maintenance tunnels pose serious risks due to restricted movement, poor ventilation, and the presence of toxic gases like CO2 or CO. Exposure to chemical hazards from fuel oils, lubricants, and additives like chromium compounds also calls for robust hazard communication and protective measures. The multifaceted nature of these risks underlines why safety in cement manufacturing must go beyond compliance—it requires a continuous commitment to hazard identification, mitigation, and a culture of proactive risk management.

Role of personal protective equipment
In the high-risk environment of cement manufacturing, Personal Protective Equipment (PPE) plays a frontline role in safeguarding workers from a wide range of occupational hazards. From exposure to high temperatures and airborne particulate matter to mechanical injuries and chemical contact, the need for comprehensive, head-to-toe protection is non-negotiable. Standard PPE in cement plants typically includes hard hats, earplugs, respirators, safety goggles, flame-resistant clothing, cut-resistant gloves, and safety shoes compliant with IS 15298 or EN ISO 20345 standards. According to the International Labour Organisation (ILO), proper use of PPE can reduce workplace injury and illness by up to 40 per cent, yet studies by India’s Directorate General Factory Advice Service and Labour Institutes (DGFASLI) reveal that lack of proper PPE usage or ill-fitting gear continues to be a common root cause in many reported incidents in industrial settings.
Anuj Kumar Mathur, Industry Expert and Retd. DGM – Safety, Health and Environment, Indian Oil Corporation, explains that the cement manufacturing process involves exposure to a wide range of occupational hazards including dust, noise, high temperatures, mechanical injuries and chemical exposure. The use of appropriate Personal Protective Equipment (PPE) is essential for safeguarding workers’ health and safety at every stage. PPE, however, serves as the last line of defence against occupational hazards in any industry. While engineering controls and administrative measures are essential, the proper selection, use, and maintenance of PPE can significantly reduce the risk of injury and illness.
Equally important is ensuring that PPE is not just available but also compliant with national and international safety norms. Indian Standards such as IS 2925 for helmets, IS 8519 for gloves, and IS 11226 for respiratory protection provide specific performance benchmarks tailored for heavy industries. In many leading cement plants, regular audits are now conducted to check PPE condition, fit, and user compliance. A recent report by the Global Cement and Concrete Association (GCCA) highlights that cement companies with strong PPE monitoring programs report significantly fewer recordable injuries per million man-hours. However, the challenge remains in ensuring contractor-level compliance, as outsourced workers often fall outside direct control systems. Bridging this gap through robust training, fit testing, and digital PPE tracking systems is becoming an industry best practice—and a critical component of building a truly safe and resilient cement workforce.

Fire safety in cement plants
Fire safety is a critical yet often underemphasised aspect of cement plant operations. The combination of high-temperature processes, combustible materials, heavy electrical loads, and complex machinery creates multiple ignition points across production and storage areas. Key fire risks in cement manufacturing include overheated bearings, short circuits, flammable oils and fuels, coal dust in mills, and welding or hot work activities during maintenance. According to a 2023 report by the National Fire Protection Association (NFPA), industrial fires caused an estimated $1.2 billion in direct property damage globally, with cement and mineral plants accounting for a significant share of incidents in developing economies. In India, several fire-related accidents in the cement sector have drawn attention to the urgent need for advanced fire suppression systems, periodic fire safety audits, and better-trained emergency response teams.
Priya Ajbani, Founder, Firescue, says, “High-risk industrial environments demand products that can perform under pressure literally and figuratively. In such cases, we focus on supplying robust, industrial-grade fire extinguishers, flexible sprinkler hose droppers that can be easily installed around tricky ductwork or high ceilings, and high-capacity hose reels with quality nozzles that ensure water pressure isn’t compromised. The key is to offer certified, tested equipment that meets international standards and lasts long despite heat, dust, and vibration- conditions that are typical in cement plants. At the end of the day, a good product doesn’t just save lives- it simplifies the fire safety process for the people who operate it on the ground.”
Modern fire safety in cement plants now goes beyond extinguishers and hose reels. Plants are increasingly deploying automatic fire detection and suppression systems, such as foam-based suppression in fuel storage areas, water mist systems for electrical rooms, and tube-based fire suppression for enclosed equipment like panels and conveyor belts. Fire audits, mandated under the Factories Act, 1948 and National Building Code (NBC), are conducted at regular intervals to assess readiness, check compliance, and recommend corrective actions. Additionally, leading cement manufacturers are investing in IoT-enabled hydrant systems and mobile-based emergency notification tools to improve incident response time. A 2022 study by the Indian Institute of Fire Engineers (IIFE) revealed that plants with digital fire safety systems experienced 35 per cent faster emergency response and 25 per cent lower downtime after fire-related events. As the sector moves toward more automated and sustainable operations, embedding robust fire safety frameworks remains a non-negotiable pillar for risk mitigation and operational resilience.

Automation and digital tools enhancing safety
As the cement industry embraces Industry 4.0, automation and digitalisation are playing a transformative role not only in improving operational efficiency but also in elevating workplace safety standards. Traditional safety practices are being augmented—and in many cases replaced—by intelligent systems such as Permit-to-Work (PTW) software, IoT-based monitoring, Behaviour-Based Safety (BBS) platforms, and real-time safety dashboards. These tools offer real-time visibility into safety compliance, worker behavior, equipment health, and hazardous conditions—enabling faster, more informed decision-making. According to a 2022 report by McKinsey & Company, industries implementing digital safety tools saw a 25 to 40 per cent reduction in recordable incidents, thanks to improved monitoring, predictive analytics, and timely intervention.
Ganesh W Jirkuntwar, Senior Executive Director and National Manufacturing Head, Dalmia Cement (Bharat), says, “At Dalmia, safety is embedded into daily work, not treated as a separate task. Integrating safety into day-to-day operations is critical to its sustainability. Every morning begins with structured toolbox talks mandatorily attended by all workforce and ‘Suraksha Vartalaps’, where teams collectively identify job-specific risks. Across units, daily safety reviews are held as part of the operations rhythm, with real-time data and feedback feeding directly into corrective actions.”
“Digital tools like the ‘KAVACH’ and ‘Boots on Ground’ platform allow supervisors to log observations, track unsafe conditions and monitor action closures with location-tagged evidence. The Permit to Work (PTW) system is fully digitised, ensuring consistent protocols and visibility for all critical jobs. These practices ensure safety is not a standalone agenda, but rather, an integral part of the operating DNA” he adds.
In the context of cement plants, these tools are particularly valuable given the scale, complexity, and inherent risks of operations. IoT sensors installed on kilns, conveyors, and high-risk zones can track temperature spikes, gas leaks, or unauthorised access to restricted areas. PTW systems ensure that only trained personnel perform critical tasks like confined space entry or hot work, reducing human error. Behaviour-Based Safety platforms use data analytics to identify unsafe acts and reinforce positive habits through coaching and alerts. Meanwhile, centralised safety dashboards provide plant managers with real-time alerts, compliance reports, and actionable insights—enabling them to proactively manage risk across multiple sites. A case study from Dalmia Cement revealed that the integration of mobile-based PTW and IoT-linked hydrant systems led to a 30 per cent improvement in emergency response time and a measurable drop in near-miss incidents. The message is clear: digital tools are no longer optional add-ons—they are now integral to building safer, smarter, and more accountable cement operations.

Training and behaviour-based safety
While equipment and protocols are essential, the foundation of any truly safe cement plant lies in the behaviour and preparedness of its workforce. Training and Behaviour-Based Safety (BBS) programs are now recognised as critical components in reducing accidents, empowering employees, and fostering a proactive safety culture. Cement plants are increasingly investing in structured skill development initiatives—ranging from Emergency Response Training (ERT) and safe equipment handling to hazard identification and near-miss reporting. According to the International Labour Organisation (ILO), nearly 80 per cent of workplace incidents globally are caused by unsafe behaviours rather than unsafe conditions—highlighting the need for consistent behavioural interventions alongside technical controls.
Sujeet Kumar Singh, Founder, HSESkillEdge, says, “Contractor and worker compliance for routine activities is effectively managed through a Contractor and Logistics Safety Management System, supported by rigorous training, on-the-job observations, and active worker engagement in risk assessments. This includes regular toolbox talks, safety skits during monthly safety gate meetings, and, most importantly, positive reinforcement through public recognition, praise for safe behaviours, and continuous feedback on observations related to at-risk behaviours or opportunities for improvement (OFIs).”
“The Indian cement industry has also taken a progressive step by initiating the development of a Safety Passport System for contractors, contract workers, and drivers. This initiative, in collaboration with the Global Cement and Concrete Association (India) and the National Safety Council of India, is highly practical and focuses on hand-holding and capacity building to ensure health and safety, especially in non-routine and high-risk jobs. I am truly grateful to be part of the core team driving this initiative, alongside corporate safety heads from all GCCA (India) member companies” he adds.
In the Indian cement sector, leading companies have adopted comprehensive BBS models that combine real-time observations, peer-to-peer feedback, coaching, and performance tracking. Training modules are also being digitised using 3D animations, e-learning platforms, and simulation-based safety drills to enhance retention and engagement. A 2023 report by the Global Cement and Concrete Association (GCCA) showed that plants with active BBS and workforce training programs reported 40 to 50 per cent fewer lost-time injuries (LTIs) than those relying only on physical safety systems. Furthermore, integrating behaviour-focused audits with standard operating procedures (SOPs) ensures that safety becomes second nature rather than a checklist. In essence, when safety becomes a mindset—nurtured through daily reinforcement and skill building—it transforms from a policy into a way of life on the shop floor.

Contractor safety management
In the cement industry, a significant portion of the workforce comprises contracted or third-party workers—particularly in operations such as maintenance, loading/unloading, material handling, and logistics. This creates a complex safety challenge, as contractors often operate outside the core company’s direct control systems, making it harder to enforce uniform safety protocols. In India, the Directorate General Factory Advice Service and Labour Institutes (DGFASLI) reported that nearly 40 per cent of serious industrial accidents in manufacturing units involved contract labour, largely due to inadequate training, lack of PPE compliance, and poor safety orientation. In cement plants, where high-risk environments are the norm, the lack of contractor safety governance can have severe and sometimes fatal consequences.
To address this, leading cement manufacturers have begun implementing structured Contractor Safety Management (CSM) programs that include prequalification audits, induction training, real-time safety tracking, and accountability frameworks. Some are also deploying digital ‘worker passport’ systems, which log training history, medical fitness, and access permissions for every contractor on site. The Global Cement and Concrete Association (GCCA) recommends integrating contractors into core Behaviour-Based Safety (BBS) programs, and ensuring they are part of regular tool-box talks, emergency drills, and incident investigations. In fact, a 2023 GCCA survey showed that cement plants with dedicated contractor safety governance reported 32 per cent fewer injuries among third-party workers compared to those without. Effective contractor safety isn’t just about regulatory compliance—it’s about aligning everyone on site with a common safety culture, where accountability and awareness are universal.

Conclusion
As the cement industry evolves to meet the demands of sustainability, scale, and operational excellence, the importance of a robust safety framework has never been greater. From managing high-risk environments and enforcing PPE compliance to leveraging automation, fire safety systems, and Behaviour-Based Safety (BBS) programs, the industry is steadily moving toward a culture where safety is not just enforced—but embedded. What’s clear is that safety must go beyond audits and checklists; it must become a continuous, organisation-wide commitment that includes not just full-time staff, but also contractors, suppliers, and every individual entering the plant gate.
The integration of digital tools, advanced training, and strict contractor safety management is not just about regulatory alignment—it is about building resilient operations that protect people, reduce downtime, and drive long-term value. With increasing awareness, global benchmarks, and support from industry bodies like the GCCA and CMA, Indian cement manufacturers are now well-positioned to lead by example. By putting “safety from the heart” into action—through technology, accountability, and culture—the industry can lay the foundation not just for stronger infrastructure, but for safer, smarter workplaces across the country.

– Kanika Mathur

Up Next

Zero Harm isn’t a target; it’s a mindset

Don't Miss

A proud milestone of India’s innovation and growth

Concrete

Refractory demands in our kiln have changed

Published

3 days ago

February 20, 2026

admin

Radha Singh, Senior Manager (P&Q), Shree Digvijay Cement, points out why performance, predictability and life-cycle value now matter more than routine replacement in cement kilns.

As Indian cement plants push for higher throughput, increased alternative fuel usage and tighter shutdown cycles, refractory performance in kilns and pyro-processing systems is under growing pressure. In this interview, Radha Singh, Senior Manager (P&Q), Shree Digvijay Cement, shares how refractory demands have evolved on the ground and how smarter digital monitoring is improving kiln stability, uptime and clinker quality.

How have refractory demands changed in your kiln and pyro-processing line over the last five years?
Over the last five years, refractory demands in our kiln and pyro line have changed. Earlier, the focus was mostly on standard grades and routine shutdown-based replacement. But now, because of higher production loads, more alternative fuels and raw materials (AFR) usage and greater temperature variation, the expectation from refractory has increased.
In our own case, the current kiln refractory has already completed around 1.5 years, which itself shows how much more we now rely on materials that can handle thermal shock, alkali attack and coating fluctuations. We have moved towards more stable, high-performance linings so that we don’t have to enter the kiln frequently for repairs.
Overall, the shift has been from just ‘installation and run’ to selecting refractories that give longer life, better coating behaviour and more predictable performance under tougher operating conditions.

What are the biggest refractory challenges in the preheater, calciner and cooler zones?
• Preheater: Coating instability, chloride/sulphur cycles and brick erosion.
• Calciner: AFR firing, thermal shock and alkali infiltration.
• Cooler: Severe abrasion, red-river formation and mechanical stress on linings.
Overall, the biggest challenge is maintaining lining stability under highly variable operating conditions.

How do you evaluate and select refractory partners for long-term performance?
In real plant conditions, we don’t select a refractory partner just by looking at price. First, we see their past performance in similar kilns and whether their material has actually survived our operating conditions. We also check how strong their technical support is during shutdowns, because installation quality matters as much as the material itself.
Another key point is how quickly they respond during breakdowns or hot spots. A good partner should be available on short notice. We also look at their failure analysis capability, whether they can explain why a lining failed and suggest improvements.
On top of this, we review the life they delivered in the last few campaigns, their supply reliability and their willingness to offer plant-specific custom solutions instead of generic grades. Only a partner who supports us throughout the life cycle, which includes selection, installation, monitoring and post-failure analysis, fits our long-term requirement.

Can you share a recent example where better refractory selection improved uptime or clinker quality?
Recently, we upgraded to a high-abrasion basic brick at the kiln outlet. Earlier we had frequent chipping and coating loss. With the new lining, thermal stability improved and the coating became much more stable. As a result, our shutdown interval increased and clinker quality remained more consistent. It had a direct impact on our uptime.

How is increased AFR use affecting refractory behaviour?
Increased AFR use is definitely putting more stress on the refractory. The biggest issue we see daily is the rise in chlorine, alkalis and volatiles, which directly attack the lining, especially in the calciner and kiln inlet. AFR firing is also not as stable as conventional fuel, so we face frequent temperature fluctuations, which cause more thermal shock and small cracks in the lining.
Another real problem is coating instability. Some days the coating builds too fast, other days it suddenly drops, and both conditions impact refractory life. We also notice more dust circulation and buildup inside the calciner whenever the AFR mix changes, which again increases erosion.
Because of these practical issues, we have started relying more on alkali-resistant, low-porosity and better thermal shock–resistant materials to handle the additional stress coming from AFR.

What role does digital monitoring or thermal profiling play in your refractory strategy?
Digital tools like kiln shell scanners, IR imaging and thermal profiling help us detect weakening areas much earlier. This reduces unplanned shutdowns, helps identify hotspots accurately and allows us to replace only the critical sections. Overall, our maintenance has shifted from reactive to predictive, improving lining life significantly.

How do you balance cost, durability and installation speed during refractory shutdowns?
We focus on three points:
• Material quality that suits our thermal profile and chemistry.
• Installation speed, in fast turnarounds, we prefer monolithic.
• Life-cycle cost—the cheapest material is not the most economical. We look at durability, future downtime and total cost of ownership.
This balance ensures reliable performance without unnecessary expenditure.

What refractory or pyro-processing innovations could transform Indian cement operations?
Some promising developments include:
• High-performance, low-porosity and nano-bonded refractories
• Precast modular linings to drastically reduce shutdown time
• AI-driven kiln thermal analytics
• Advanced coating management solutions
• More AFR-compatible refractory mixes

These innovations can significantly improve kiln stability, efficiency and maintenance planning across the industry.

Concrete

Digital supply chain visibility is critical

Published

3 days ago

February 20, 2026

admin

MSR Kali Prasad, Chief Digital and Information Officer, Shree Cement, discusses how data, discipline and scale are turning Industry 4.0 into everyday business reality.

Over the past five years, digitalisation in Indian cement manufacturing has moved decisively beyond experimentation. Today, it is a strategic lever for cost control, operational resilience and sustainability. In this interview, MSR Kali Prasad, Chief Digital and Information Officer, Shree Cement, explains how integrated digital foundations, advanced analytics and real-time visibility are helping deliver measurable business outcomes.

How has digitalisation moved from pilot projects to core strategy in Indian cement manufacturing over the past five years?
Digitalisation in Indian cement has evolved from isolated pilot initiatives into a core business strategy because outcomes are now measurable, repeatable and scalable. The key shift has been the move away from standalone solutions toward an integrated digital foundation built on standardised processes, governed data and enterprise platforms that can be deployed consistently across plants and functions.
At Shree Cement, this transition has been very pragmatic. The early phase focused on visibility through dashboards, reporting, and digitisation of critical workflows. Over time, this has progressed into enterprise-level analytics and decision support across manufacturing and the supply chain,
with clear outcomes in cost optimisation, margin protection and revenue improvement through enhanced customer experience.
Equally important, digital is no longer the responsibility of a single function. It is embedded into day-to-day operations across planning, production, maintenance, despatch and customer servicing, supported by enterprise systems, Industrial Internet of Things (IIoT) data platforms, and a structured approach to change management.

Which digital interventions are delivering the highest ROI across mining, production and logistics today?
In a capital- and cost-intensive sector like cement, the highest returns come from digital interventions that directly reduce unit costs or unlock latent capacity without significant capex.
Supply chain and planning (advanced analytics): Tools for demand forecasting, S&OP, network optimisation and scheduling deliver strong returns by lowering logistics costs, improving service levels, and aligning production with demand in a fragmented and regionally diverse market.
Mining (fleet and productivity analytics): Data-led mine planning, fleet analytics, despatch discipline, and idle-time reduction improve fuel efficiency and equipment utilisation, generating meaningful savings in a cost-heavy operation.
Manufacturing (APC and process analytics): Advanced Process Control, mill optimisation, and variability reduction improve thermal and electrical efficiency, stabilise quality and reduce rework and unplanned stoppages.
Customer experience and revenue enablement (digital platforms): Dealer and retailer apps, order visibility and digitally enabled technical services improve ease of doing business and responsiveness. We are also empowering channel partners with transparent, real-time information on schemes, including eligibility, utilisation status and actionable recommendations, which improves channel satisfaction and market execution while supporting revenue growth.
Overall, while Artificial Intelligence (AI) and IIoT are powerful enablers, it is advanced analytics anchored in strong processes that typically delivers the fastest and most reliable ROI.

How is real-time data helping plants shift from reactive maintenance to predictive and prescriptive operations?
Real-time and near real-time data is driving a more proactive and disciplined maintenance culture, beginning with visibility and progressively moving toward prediction and prescription.
At Shree Cement, we have implemented a robust SAP Plant Maintenance framework to standardise maintenance workflows. This is complemented by IIoT-driven condition monitoring, ensuring consistent capture of equipment health indicators such as vibration, temperature, load, operating patterns and alarms.
Real-time visibility enables early detection of abnormal conditions, allowing teams to intervene before failures occur. As data quality improves and failure histories become structured, predictive models can anticipate likely failure modes and recommend timely interventions, improving MTBF and reducing downtime. Over time, these insights will evolve into prescriptive actions, including spares readiness, maintenance scheduling, and operating parameter adjustments, enabling reliability optimisation with minimal disruption.
A critical success factor is adoption. Predictive insights deliver value only when they are embedded into daily workflows, roles and accountability structures. Without this, they remain insights without action.

In a cost-sensitive market like India, how do cement companies balance digital investment with price competitiveness?
In India’s intensely competitive cement market, digital investments must be tightly linked to tangible business outcomes, particularly cost reduction, service improvement, and faster decision-making.
This balance is achieved by prioritising high-impact use cases such as planning efficiency, logistics optimisation, asset reliability, and process stability, all of which typically deliver quick payback. Equally important is building scalable and governed digital foundations that reduce the marginal cost of rolling out new use cases across plants.
Digitally enabled order management, live despatch visibility, and channel partner platforms also improve customer centricity while controlling cost-to-serve, allowing service levels to improve without proportionate increases in headcount or overheads.
In essence, the most effective digital investments do not add cost. They protect margins by reducing variability, improving planning accuracy, and strengthening execution discipline.

How is digitalisation enabling measurable reductions in energy consumption, emissions, and overall carbon footprint?
Digitalisation plays a pivotal role in improving energy efficiency, reducing emissions and lowering overall carbon intensity.
Real-time monitoring and analytics enable near real-time tracking of energy consumption and critical operating parameters, allowing inefficiencies to be identified quickly and corrective actions to be implemented. Centralised data consolidation across plants enables benchmarking, accelerates best-practice adoption, and drives consistent improvements in energy performance.
Improved asset reliability through predictive maintenance reduces unplanned downtime and process instability, directly lowering energy losses. Digital platforms also support more effective planning and control of renewable energy sources and waste heat recovery systems, reducing dependence on fossil fuels.
Most importantly, digitalisation enables sustainability progress to be tracked with greater accuracy and consistency, supporting long-term ESG commitments.

What role does digital supply chain visibility play in managing demand volatility and regional market dynamics in India?
Digital supply chain visibility is critical in India, where demand is highly regional, seasonality is pronounced, and logistics constraints can shift rapidly.
At Shree Cement, planning operates across multiple horizons. Annual planning focuses on capacity, network footprint and medium-term demand. Monthly S&OP aligns demand, production and logistics, while daily scheduling drives execution-level decisions on despatch, sourcing and prioritisation.
As digital maturity increases, this structure is being augmented by central command-and-control capabilities that manage exceptions such as plant constraints, demand spikes, route disruptions and order prioritisation. Planning is also shifting from aggregated averages to granular, cost-to-serve and exception-based decision-making, improving responsiveness, lowering logistics costs and strengthening service reliability.

How prepared is the current workforce for Industry 4.0, and what reskilling strategies are proving most effective?
Workforce preparedness for Industry 4.0 is improving, though the primary challenge lies in scaling capabilities consistently across diverse roles.
The most effective approach is to define capability requirements by role and tailor enablement accordingly. Senior leadership focuses on digital literacy for governance, investment prioritisation, and value tracking. Middle management is enabled to use analytics for execution discipline and adoption. Frontline sales and service teams benefit from
mobile-first tools and KPI-driven workflows, while shop-floor and plant teams focus on data-driven operations, APC usage, maintenance discipline, safety and quality routines.
Personalised, role-based learning paths, supported by on-ground champions and a clear articulation of practical benefits, drive adoption far more effectively than generic training programmes.

Which emerging digital technologies will fundamentally reshape cement manufacturing in the next decade?
AI and GenAI are expected to have the most significant impact, particularly when combined with connected operations and disciplined processes.
Key technologies likely to reshape the sector include GenAI and agentic AI for faster root-cause analysis, knowledge access, and standardisation of best practices; industrial foundation models that learn patterns across large sensor datasets; digital twins that allow simulation of process changes before implementation; and increasingly autonomous control systems that integrate sensors, AI, and APC to maintain stability with minimal manual intervention.
Over time, this will enable more centralised monitoring and management of plant operations, supported by strong processes, training and capability-building.

Concrete

Cement Additives for Improved Grinding Efficiency

Published

3 days ago

February 20, 2026

admin

Shreesh A Khadilkar discusses how advanced additive formulations allow customised, high-performance and niche cements—offering benefits while supporting blended cements and long-term cost and carbon reduction.

Cement additives are chemicals (inorganic and organic) added in small amounts (0.01 per cent to 0.2 per cent by weight) during cement grinding. Their main job? Reduce agglomeration, prevent pack-set, and keep the mill running smoother. Thus, these additions primarily improve, mill thru-puts, achieve lower clinker factor in blended cements PPC/PSC/PCC. Additionally, these additives improve concrete performance of cements or even for specific special premium cements with special USPs like lower setting times or for reduced water permeability in the resultant cement mortars and concrete (water repellent /permeation resistant cements), corrosion resistance etc.
The cement additives are materials which could be further differentiated as:

Grinding aids:
• Bottlenecks in cement grinding capacity, such materials can enhance throughputs
• Low specific electrical energy consumption during cement grinding
• Reduce “Pack set” problem and improve powder flowability

Quality improvers:
• Opportunity for further clinker factor reduction
• Solution for delayed cement setting or strength development issues at early or later ages.

Others: materials which are used for specific special cements with niche properties as discussed in the subsequent pages.
When cement additives are used as grinding aids or quality improvers, in general the additives reduce the inter-particle forces; reduce coating over grinding media and mill internals. Due to creation of like charges on cement particles, there is decreased agglomeration, much improved flowability, higher generation of fines better dispersion of particles in separator feed and reduction of mill filling level (decrease of residence time). However, in VRM grinding; actions need to be taken to have stable bed formation on the table.
It has been reported in literature and also substantiated by a number of detailed evaluations of different cement additive formulations in market, that the cement additive formulations are a combination of different chemical compounds, typically composed of:

Accelerator/s for the hydration reaction of cements which are dependent on the acceleration effect desired in mortar compressive strengths at early or later ages, the choice of the materials is also dependent on clinker quality and blending components (flyash / slag) or a mix of both.
Water reducer / workability / wet-ability enhancer, which would show impact on the resultant cement mortars and concrete. Some of the compounds (retarders) like polysaccharide derivatives, gluconates etc., show an initial retarding action towards hydration which result in reducing the water requirements for the cements thus act as water reducers, or it could be some appropriate polymeric molecules which show improved wet-ability and reduce water demand. These are selected based on the mineral component and type of cements (PPC/PSC /PCC).
Grinding aids: Compounds that work as Grinding Aid i.e. which would enhance Mill thru-put on one hand as well as would increase the early strengths due to the higher fines generation/ or activation of cement components. These compounds could be like alkanol-amines such as TIPA, DEIPA, TEA etc. or could be compounds like glycols and other poly-ols, depending on whether it is OPC or PPC or PSC or PCC manufacture.

Mechanism of action — Step By Step—

Reduce Agglomeration, Cement particles get electrostatically charged during grinding, stick together, form “flocs”, block mill efficiency, waste energy. Grinding aid molecules adsorb onto particle surfaces, neutralise charge, prevent re-agglomeration.
Improve Powder Flowability, Adsorbed molecules create a lubricating layer, particles slide past each other easier, better mill throughput, less “dead zone” buildup.
Also reduces caking on mill liners, diaphragms, and separator screens, less downtime for cleaning.
Enhance Grinding Efficiency (Finer Product Faster), By preventing agglomeration, particles stay dispersed more surface area exposed to grinding media, finer grind achieved with same energy input, Or: same fineness achieved with less energy, huge savings.
Example:
• Without aid ? 3500 cm²/g Blaine needs 40 kWh/ton
• With use of optimum grinding aid same fineness at 32 kWh/ton 20 per cent energy savings
Reduce Pack Set and Silo Caking Grinding aids (GA) inhibit hydration of free lime (CaO) during storage prevents premature hardening or “pack set” in silos. especially critical in humid climates or with high free lime clinker.
It may be stated here that Overdosing of GA can cause: – Foaming in mill (especially with glycols) reduces grinding efficiency, retardation of cement setting (especially with amines/acids), odor issues (in indoor mills) – Corrosion of mill components (if acidic aids used improperly)
The best practice to optimise use of GA is Start with 0.02 per cent to 0.05 per cent dosage test fineness, flow, and set time adjust up/down. Due to static charge of particles, the sample may stick to the sides of sampler pipe and so sampling need to be properly done.
Depending on type of cements i.e. OPC, PPC, PSC, PCC, the grinding aids combinations need to be optimised, a typical Poly carboxylate ether also could be a part of the combo grinding aids

Cement additives for niche properties of the cement in concrete.
The cement additives can also be tailor made to create specific niche properties in cements, OPC, PPC, PSC and PCC to create premium or special brands. The special niche properties of the cement being its additional USP of such cement products, and are useful for customers to build a durable concrete structure with increased service life.

Such properties could be:
• Additives for improved concrete performance of cements, high early strength in PPC/PSC/PCC, much reduced water demand in cement, cements with improved slump retentivity in concrete, self-compacting, self levelling in concrete, cements with improved adhesion property of the cement mortar
• Water repellence / water proofing, permeability resistance in mortars and concrete.
• Biocidal cement
• Photo catalytic cements
• Cements with negligible ASR reactions etc.

Additives for cements for improved concrete performance
High early strengths: Use of accelerators. These are chemical compounds which enhance the degree of hydration of cement. These can include setting or hardening accelerators depending on whether their action occurs in the plastic or hardened state respectively. Thus, the setting accelerators reduce the setting time, whereas the hardening accelerators increase the early age strengths. The setting accelerators act during the initial minutes of the cement hydration, whereas the hardening accelerators act mainly during the initial days of hydration.
Chloride salts are the best in class. However, use of chloride salts as hardening accelerators are strongly discouraged for their action in promoting the corrosion of rebar, thus, chloride-free accelerators are preferred. The hardening accelerators could be combinations of compounds like nitrate, nitrite and thiocyanate salts of alkali or alkaline earth metals or thiosulphate, formate, and alkanol amines depending on the cement types.
However, especially in blended cements (PPC/PSC/PCC the increased early strengths invariably decrease the 28 day strengths. These aspects lead to creating combo additives along with organic polymers to achieve improved early strengths as well as either same or marginally improved 28 days strengths with reduced clinker factor in the blended cement, special OPC with reduced admixture requirements. With use of appropriate combination of inorganic and organic additives we could create an OPC with substantially reduced water demand or improved slump retentivity. Use of such an OPC would show exceptional concrete performance in high grade concretes as it would exhibit lower admixture requirements in High Grade Concretes.
PPC with OPC like properties: With the above concept we could have a PPC, having higher percentage flyash, with a combo cement additive which would have with concrete performance similar to OPC in say M40/M50 concrete. Such a PPC would produce a high-strength PPC concrete (= 60 MPa @ 28d) + improved workability, durability and sustainability.
Another interesting aspect could also be of using ultrafine fine flyash /ultrafine slags as additions in OPC/PPC/PSC for achieving lower clinker factor as well as to achieve improved later age strengths with or without a combo cement additive.
The initial adhesion property at sites of especially PPC/PSC/PCC based mortars can be improved through use of appropriate organic polymers addition during the manufacture of these cements. Such cements would have a better adhesion property for plastering/brick bonding etc., as it has much lower rebound loss of their mortars in such applications.
It is needless to mention here that with use of additives, we could also have cement with viscosity modifying cement additives, for self-compaction and self-leveling concrete performance.
Use of Phosphogypsum retards the setting time of cements, we can use additive different additive combos to overcome retardation and improve the 1 day strengths of the cements and concretes.

About the author:
Shreesh Khadilkar, Consultant & Advisor, Former Director Quality & Product Development, ACC, a seasoned consultant and advisor, brings over 37 years of experience in cement manufacturing, having held leadership roles in R&D and product development at ACC Ltd. With deep expertise in innovative cement concepts, he is dedicated to sharing his knowledge and improving the performance of cement plants globally.