Concrete

The Science and Application of Grinding Aids

Published

1 year ago

March 11, 2025

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Dr SB Hegde discusses the importance of grinding aids as essential chemical additives that enhance cement grinding efficiency, reduce energy consumption and improve overall cement quality in the concluding part of his article.

Grinding aids represent a critical segment of the cement additives market, driven by their ability to enhance grinding efficiency, reduce energy consumption, and improve cement quality. The market dynamics of grinding aids vary significantly across regions, influenced by economic growth, cement production capacities and regulatory environments.

Global market size and growth projections
The global grinding aids market was valued at approximately US $ 1.2 billion in 2023 and is expected to grow at a CAGR of 5.5 per cent from 2023 to 2030, reaching nearly US $ 1.8 billion by 2030.
This growth is fueled by the increasing focus on energy efficiency and sustainable cement production practices worldwide.
Rapid urbanisation and infrastructure development, especially in emerging economies, are major growth drivers. Cement producers are increasingly adopting grinding aids to address rising energy costs, reduce carbon footprints, and improve production efficiencies. For instance, grinding aids have been shown to lower energy consumption by up to 25 per cent, making them a cost-effective solution for plants facing energy price volatility.

Regional trends: Developed vs. developing markets

Developed markets: Europe and North America represent mature markets for grinding aids. Europe, driven by stringent environmental regulations such as the EU Emissions Trading System (EU ETS), has witnessed a steady rise in the adoption of low-VOC and eco-friendly grinding aids. Leading players in these markets emphasise sustainability and compliance with regulatory frameworks, contributing to steady demand.
In North America, the focus is on productivity enhancements in large-scale cement plants, with grinding aids used to achieve finer cement grades and support blended cement production.
Developing markets: Emerging economies in Asia-Pacific, the Middle East, and Africa exhibit the fastest growth in grinding aid adoption. The Asia-Pacific region accounted for over 40 per cent of global grinding aid consumption in 2023, with countries like India, China, and Vietnam leading the way. The rapid urbanisation, rising construction activity, and increasing cement production capacities in these regions are
driving demand.

In Africa, grinding aids are gaining traction as manufacturers focus on optimising production costs in an environment of fluctuating raw material and energy prices.

Market size and adoption rate in India
India, the world’s second-largest cement producer, offers a significant growth opportunity for grinding aids. In 2023, the grinding aids market in India was valued at US$ 150 million, with a projected growth rate of over seven per cent CAGR through 2030. The adoption rate remains relatively low at smaller plants, which prioritise cost-saving over efficiency gains. However, leading manufacturers and integrated cement plants are increasingly embracing grinding aids, particularly for blended cement production.
Blended cements, such as Portland Pozzolana Cement (PPC) and Portland Slag Cement (PSC), account for more than 70 per cent of the Indian cement market. Grinding aids tailored for fly ash and slag-blended cements are in high demand, with some products delivering up to a 15 per cent increase in mill throughput and improved early strength development.

Emerging trends

Eco-friendly formulations: The growing demand for sustainable grinding aids has prompted companies to develop low-VOC and biodegradable alternatives.
Customised solutions: Grinding aid formulations are increasingly tailored to address specific raw material challenges and production processes, such as VRMs or high-SCM cement blends.
Digitalisation: Smart dosing systems integrated with real-time mill monitoring are enabling optimised grinding aid usage, ensuring consistent performance across diverse production conditions.

Bridging the Trust Gap
For cement plant operators, the quality and performance of grinding aids often appear as a ‘black box.’ The lack of transparency in the formulation and quality checks of these additives has historically limited trust and widespread adoption. Grinding aid manufacturers must address this issue by fostering transparency and providing detailed insights into the testing and validation of their products. This would not only instill confidence but also strengthen collaboration with cement companies.
Grinding aid producers should provide robust documentation outlining the physical and chemical characteristics of their formulations, supported by consistent performance data from laboratory tests, industrial-scale trials, and third-party validations. This transparency is essential to demystify grinding aids’ performance and demonstrate their effectiveness across diverse operational conditions.

Emerging innovations in grinding aid chemistry
The path forward for grinding aid manufacturers lies in innovation. Recent research highlights the potential of hybrid formulations combining traditional amines and glycols with advanced polymeric additives like polycarboxylate ethers (PCEs). These hybrid products can address specific challenges such as improving grindability in blended cements containing fly ash or slag, where traditional additives often underperform. Nano-engineering of grinding aids, incorporating nanoparticles for optimised dispersion and enhanced hydration kinetics, represents another promising avenue.

Leveraging AI for optimisation

The integration of artificial intelligence (AI) and machine learning tools into grinding aid application systems is reshaping the cement industry. AI-driven systems enable real-time optimisation of grinding aid dosages by analysing mill performance data, such as power consumption, throughput, and particle size distribution. For example, a cement plant in Europe reported a 15 per cent reduction in specific energy consumption and a 10 per cent
increase in mill throughput using AI-optimised dosing systems. This innovation reduces operational variability and improves the predictability of grinding aid performance.

Expectations from grinding aid producers
The cement industry demands more than just products; it seeks partnerships with grinding aid manufacturers. Key expectations include:
1. Customised formulations: Tailored products designed for specific raw materials, clinker compositions, and mill configurations to maximise efficiency and performance.
2. Eco-friendly additives: Grinding aids with low volatile organic compound (VOC) emissions and biodegradable ingredients that align with the industry’s sustainability goals.
3. Comprehensive technical support: On-site training and technical services to help plant operators understand grinding aid chemistry, application techniques and performance optimisation strategies.
4. Advanced quality control systems: Transparent testing protocols, including real-time quality assurance of grinding aids delivered to cement plants. Regular reporting of performance consistency through defined KPIs like grindability index and Blaine fineness is essential.

Role of cement companies in promoting grinding aid usage
Cement producers must take an active role in promoting grinding aid adoption. Sharing success stories of energy savings, improved mill performance, and enhanced cement quality can encourage industry-wide adoption. For example, an Indian cement manufacturer recently documented a 20 per cent improvement in 28-day compressive strength and a 10 per cent reduction in energy consumption with glycol-based additives, driving interest among peers.
Moreover, collaborative initiatives between cement producers and grinding aid manufacturers, such as joint research programs and knowledge-sharing forums, could lead to significant advancements in grinding technology. Organisations like the Cement Manufacturers’ Association of India and the World Cement Association can facilitate these partnerships.

Conclusion
Grinding aids play a pivotal role in modern cement manufacturing, offering significant advantages in energy efficiency, mill productivity and cement quality. Despite their transformative potential, adoption remains inconsistent due to challenges like raw material variability, operational concerns and limited trust in product formulations. Transparency and collaboration between grinding aid producers and cement manufacturers are critical to addressing these issues and fostering broader acceptance.
Innovations in grinding aid chemistry, including hybrid formulations and nano-engineered additives, have unlocked new possibilities for enhancing grindability and hydration performance. Meanwhile, advancements in artificial intelligence and data analytics have opened avenues for real-time optimisation, ensuring precise dosing and measurable cost savings. These developments underscore the evolving synergy between technology and grinding aid applications.
Globally, the grinding aid market is poised for growth, with developed regions leading adoption and emerging economies like India offering immense potential driven by infrastructure demands. However, tapping into these opportunities requires grinding aid producers to align with industry expectations. Cement manufacturers expect customised solutions, eco-friendly formulations, technical support and transparent quality assurance processes to build trust and confidence.
The path forward demands a collaborative approach. Grinding aid producers must continue investing in research and innovation while actively engaging with the cement industry to educate stakeholders and demonstrate measurable benefits. Concurrently, the cement industry must champion adoption through case studies, knowledge sharing, and regulatory support. Together, these efforts will ensure grinding aids fulfill their promise of enabling a more efficient, sustainable, and resilient cement manufacturing sector.

References
1. Gao, J., Zhang, S., Wang, X., & Ma, B. (2011). “Effect of organic grinding aids on cement properties and the analysis via liquid chromatography-mass spectrometry.” Construction and Building Materials, 25(8), 3600–3605.
2. Amritphale, S. S., Patel, M., & Singh, R. (2017). “Grinding aids: A study on their mechanism of action in cement grinding processes.” Indian Cement Review.
3. Cembureau – The European Cement Association. “Cement grinding optimisation through grinding aids.” Industry Report, 2023.
4. Flatt, R. J., & Schober, I. (2012). “Superplasticisers and the rheology of concrete.” International Journal of Cement Chemistry, 64(4), 91–109.
5. Mejeoumov, G. G. (2007). “Improved cement quality and grinding efficiency by means of closed mill circuit modeling.” PhD Dissertation, Texas A&M University.
6. Global Cement. “Advances in grinding aids: Market trends and new technologies.” Published October 2024.
7. Statista. “Global grinding aids market size and forecast (2023-2030).” Published March 2024.
8. Pal, B. K., & Rath, P. C. (2020). “Influence of grinding aids on particle size distribution, strength, and hydration of cement.” Journal of Materials Science and Applications, 45(2), 234–246.
9. Indian Cement Review. “Emerging market scope of grinding aids in India.” Published July 2023.
10. Zhang, H., Li, X., & Zhao, Y. (2022). “The role of grinding aids in improving cement hydration kinetics.” Journal of Advanced Materials Science, 17(6), 527–540.
11. Sika AG. “Technical Report on Polycarboxylate Ether (PCE) based grinding aids.” Published 2022.
12. Cement and Concrete Research. “AI-driven optimisation in cement grinding: Case studies and industrial applications.” Volume 152, 2023.
13. Taylor, H. F. W. (1997). Cement Chemistry (2nd Edition). Thomas Telford Publishing.
14. Indian Bureau of Mines (IBM). “Market trends and challenges in cement manufacturing.” Annual Report, 2024.
15. World Cement Association. “Sustainability in grinding aids and cement additives.” Published 2024.

About the author:
Dr SB Hegde, a global cement industry leader with over 30 years of experience, is a Professor at Jain College of Engineering, India, and a Visiting Professor at Pennsylvania State University, USA. Recipient of the ‘Global Visionary’ award, Dr Hegde advises India’s think tank CSTEP on hydrogen usage in cement and consults for major cement companies. He also serves on expert panels of key industry bodies and journals globally.

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Cement Makers Reaffirm Commitment to Sustainable Growth

Published

6 days ago

June 5, 2026

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World Environment Day spotlight on innovation and circularity

On World Environment Day, the Indian cement industry reiterated its commitment to supporting India’s climate ambitions through sustainable manufacturing, resource efficiency and the adoption of cleaner technologies.

The Cement Manufacturers’ Association (CMA) said the sector remains aligned with the Government of India’s Net Zero commitments and is accelerating efforts to reduce its environmental footprint while supporting the country’s infrastructure and development agenda.

Parth Jindal, President, CMA and Managing Director, JSW Cement, said the industry is increasingly adopting cleaner technologies, improving energy efficiency and expanding the use of alternative fuels and raw materials. He also highlighted the growing importance of circular economy practices, where industrial by-products and waste streams from one sector are utilised as resources in another.

“The Indian Cement Industry is aligned to the Government’s commitments on carbon mitigation and is accelerating the adoption of cleaner technologies, resource efficiency and circular economy practices while actively exploring the potential of Carbon Capture, Utilisation and Storage (CCUS) as a critical pathway for deep decarbonisation,” said Jindal.

He added that coprocessing industrial waste and by-products helps conserve natural resources, reduce disposal requirements and lower the environmental footprint across multiple sectors.

According to Jindal, sustainability is no longer limited to manufacturing processes but is increasingly influencing investment decisions, innovation strategies and long-term growth plans within the industry.

Echoing similar views, Dr Raghavpat Singhania, Vice President, CMA and Managing Director, JK Cement, said sustainable development extends beyond emissions reduction and must also focus on responsible resource utilisation and waste minimisation.

“Sustainability in the built environment cannot be measured by emissions alone. It is equally about how efficiently we use resources, how effectively we minimise waste and how responsibly we create the infrastructure that will serve future generations,” said Singhania.

He noted that the cement industry is advancing its sustainability agenda through greater resource efficiency, increased circularity, technological innovation and continuous improvements in manufacturing practices. As a key contributor to India’s infrastructure development, the sector has a critical role to play in balancing economic growth with environmental responsibility.

On the occasion of World Environment Day, industry leaders reaffirmed their commitment to supporting India’s climate goals while delivering the materials required for resilient, durable and sustainable infrastructure.

Concrete

Building a Greener Future Together

Published

7 days ago

June 4, 2026

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Environmental sustainability requires immediate action, not just long-term commitments and discussions. Recycling, circular economy practices, and technology-driven waste management can help industries reduce environmental impact while supporting sustainable growth.

Author: Jignesh Kundaria, Director and CEO, Fornnax Technology

World Environment Day serves as an important reminder that environmental sustainability can no longer remain confined to discussions, reports, or long-term commitments. The environmental challenges facing the world today demand immediate, measurable, and collective action. Across industries and communities, waste generation continues to outpace our ability to process it responsibly, placing increasing pressure on ecosystems, natural resources, public health, and the well-being of future generations.

One of the most significant shifts required today is a change in how society perceives waste. Rather than being viewed as a material to be discarded, waste must be recognised as a valuable resource that can contribute to both economic growth and environmental protection when managed through the right technologies and systems. This mindset forms the foundation of the circular economy model that countries across the world are increasingly adopting to reduce landfill dependence, recover valuable materials, and create more sustainable industrial ecosystems.

India has made meaningful progress in strengthening awareness around sustainability, recycling, and environmental responsibility over the past decade. Significant efforts are being made to formalise the recycling sector through improved infrastructure, technology adoption, policy implementation, and broader stakeholder participation. These developments are creating a stronger foundation for responsible waste management and resource recovery across the country.

However, achieving long-term environmental impact requires collaboration from all stakeholders. Industries, policymakers, technology providers, and communities must work together with greater accountability to strengthen recycling ecosystems, encourage responsible waste management practices, and create sustainable outcomes through consistent execution rather than temporary interventions.

As someone closely associated with the recycling industry, I firmly believe that technology will play a decisive role in addressing future environmental challenges. Advanced recycling systems have the potential to recover valuable resources, reduce pollution, minimise landfill burdens, and conserve energy, creating a more sustainable future for generations to come. This belief is deeply reflected in Fornnax’s motto, “Committed to Create a Green Future,” which embodies our commitment to building long-term environmental value through innovation and responsible action.

At the same time, technology alone cannot deliver meaningful change. Real progress requires intent, awareness, participation, and a shared sense of responsibility. Sustainable development can only be achieved when innovation is supported by collective action and a genuine commitment to environmental stewardship.

On this World Environment Day, let us move beyond conversations and take meaningful steps towards creating a cleaner, greener, and more sustainable planet. By embracing innovation, strengthening recycling ecosystems, and acting responsibly today, we can create lasting environmental impact and secure a better future for generations to come.

Concrete

JK Lakshmi Advances LC3 Cement Expansion

Company highlights commercial production and research partnerships

Published

1 week ago

June 1, 2026

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The meeting reviewed progress in limestone calcined clay cement (LC3) technology and its commercial adoption in India’s cement sector, focusing on low-carbon alternatives to conventional binders. JK Lakshmi Cement noted that limestone calcined clay cement can reduce carbon dioxide emissions by up to 40 per cent compared with conventional cement and said this reduction supports industry decarbonisation. The company highlighted that it was among the first two cement manufacturers in India to move LC3 into commercial production after the Bureau of Indian Standards approved the technology as a cement standard.

Vinita Singhania said the transition of LC3 from research to commercial production reflected collaboration between industry, academia and international institutions. Maya Tissafi acknowledged JK Lakshmi Cement’s role in advancing LC3 adoption in India and its contribution in taking the technology from laboratory trials to commercial implementation. Both representatives underlined the growing relevance of sustainable construction materials as India expands infrastructure and urban development.

The meeting explored continued collaboration with Swiss research institutions such as EPFL, EMPA and ETH Zurich alongside Indian academic partners and development organisations. JK Lakshmi Cement has been associated with the LC3 initiative since 2014 and worked with EPFL, IIT Delhi, IIT Madras, Development Alternatives and Technology and Action for Rural Advancement. The company conducted one of the earliest industrial trials of LC3 and recently announced commercial production of Green Pro LC3 cement from its Jaykaypuram plant in Rajasthan.

India remains the world’s second-largest cement producer and expansion of infrastructure, urbanisation and housing demand continue to support long-term sector growth, increasing interest in low-carbon technologies. The company reported an annual turnover of more than Rupees (Rs) 60 bn and current cement capacity of about 18 million (mn) tonnes (t) per annum, with a target of reaching 30 million (mn) tonnes (t) by 2030. Apart from grey cement, the company also makes ready-mix concrete, gypsum plaster, wall putty, primers, adhesives and fly ash blocks, and both sides concluded on the need for continued collaboration to develop sustainable construction solutions.