Economy & Market
Creating larger societal value
Published
11 years agoon
By
admin
ACC has a firm commitment to create larger societal value. The company initiated its community development activities in pre-independence era and since then it has continued to engage with development initiatives with a host communities around its operations.
The communities living around ACC?s operations are the key stakeholders of the organisation. The company actively assists these communities in identifying, prioritising and meeting their developmental aspirations. It has adopted participatory community self-reliance initiatives across its sites in India by creating forums such as community advisory panel (CAP) which acts as a platform for the community, local district administration, NGOs and other opinion groups to come together and implement projects. The panels have proven to be valuable in presenting stakeholder views, review the progress of community projects, obtain timely feedback from stakeholders, and ensuring appropriate delivery of plan initiatives in a participatory method.
New CSR policy
In 2013, ACC revisited its CSR policy in view of the emerging regulatory framework. ACC?s Board constituted a CSR committee to particularly focus on guiding and monitoring of CSR initiatives of the company.
According to Pratyush Panda, Head – CSR, ACC, a wide range of social development initiatives were undertaken in partnership with local communities, government and non-government organisations. ?The initiatives reached out to people residing around ACC?s operational areas as well as to various disasters hit areas around the country. Focus of these initiatives were mainly on enhancing literacy and education for community, preventive health and sanitation, livelihood, employability and income generation, women empowerment, augmentation of community infrastructure, environment and other CSR initiatives such as promotion of local arts, culture and sports,? he says.
During 2013, ACC?s community development initiatives mainly focused on 132 villages, having a population of 0.6 million, located primarily around its 14 plants.
Education for society?s future
?ACC?s initiatives in education benefited 18,380 children in the neighbourhood communities. It has established schools at all its locations, where employees? children and those from surrounding communities are provided quality education,? says Panda. Management of these schools is outsourced to reputed educationists, thereby ensuring that the schools maintain high standards of education. Since most plants are situated in remote hinterlands, the ACC schools are at once the most accessible and invariably among the best in the region. The schools are supported by providing funds and infrastructure for initial construction, meeting a part of the teachers? salaries and up-gradation activities.
ACC continued to support seven Government-run Industrial Training Institutes (ITI), under a Public Private Partnership scheme (PPP), through a joint initiative with the Ministry of Labour and Employment, Government of India. Its support focuses on enhancing the skills and employability of the students passing out of these institutes by upgrading the quality of education offered there.
ACC also runs two technical training institutes of its own, both of which enjoy considerable repute as centres providing technical training. The Sumant Moolgaokar Technical Institute (SMTI) at Kymore was first established in 1949 to train young men in specialized trades to become artisans, foremen and first line supervisors. It had its own independent curriculum and certification. Since 2008, the institute works with a revised objective of complementing the education received by engineering diploma trained candidates. In 2013, SMTI trained 120 young men through an 18 month course as Diesel Mechanic-cum-Fitter and Electrical Instrumentation. The other institute managed by it is the ACC Cement Technology Institute (ACTI) which offers specialized technical training to young engineering graduates. ACTI trained 166 boys and 32 girls during the year with both class room and practical trainings in operation and maintenance of cement plants.
Community development
The thrust in this respect comprises promoting health, women?s empowerment and creating livelihoods. These initiatives benefited more than 109,000 people directly while twice as many people were indirect beneficiaries.
Promoting health: Panda elaborates on AAC?s initiatives on promoting health. ?Health being one of the prime concerns of the community and critical for general wellbeing of ACC?s stakeholders, significant initiatives were undertaken in this domain. Total 109,450 people benefited from our various health and nutrition related initiatives.? ACC?s health initiatives mainly focus on preventive health of the community. Active awareness campaigns are undertaken to enhance communities understanding about various disease prevention and healthy ways of living. Regular preventive health support to the community is reached out through health camps and mobile health vans. Most of these plant sites are situated in remote parts of the country, with little access to adequate healthcare and medical services. ACC supports the local administration in promoting national health campaigns on important issues such as malaria, prevention and immunisation and DOTS. During 2013, 3,273 general and special health camps were conducted to reach out preventive care to community members. In addition, regular support to the ACC hospitals support was also extended to various government Primary Health Care centres and Community Health Care centres.
Special initiatives in healthcare and nutrition are taken for women and children in coordination with health authorities. Communities are mobilised to participate in programmes for immunisation, anti natal care, post natal care and birth spacing methods. Iron folic acid tablets were provided to prevent anemia among pregnant mothers and adolescent girls.
?The support to Anganwadi initiative would be one such example. Anganwadis are integral part of Integrated Child Development Scheme (ICDS) that plays a vital role in rural areas for overall development of children as well as support to pregnant and lactating mothers. ACC provided support to 132 Anganwadis that are serving the host communities. This has resulted in better supply and use of government?s medicine supplies through AWC which has direct impact on infant and maternal mortality,? explains Panda.
Other support activities included health and accidental insurance for Self Help Group (SGH) members and drivers in ACC?s supply chain, subsidised ambulance facility to villagers for their emergency needs and subsidised hospitalization of villagers.
Women?s empowerment: Various initiatives are pursued to promote skill building and income generating schemes for local women groups. Women SHGs are imparted relevant training in their selected livelihoods and supported in the establishment of micro-enterprises. As many as 737 SHGs were organised during the year. Members of these new as well as old SHGs were provided training for group cohesiveness, book-keeping, product development, marketing of the products, market linkages, bank linkages and exposure to best practices in SHG functioning. Some of these groups have initiated their own micro enterprises. Through bank linkages and inter- loaning, these members generated a total savings of Rs 1.52 crore.
ACC AHEAD (Association for Health, Education and Development), the volunteering wing of the company?s ladies clubs at all plants, set up in 2008, continued to support social volunteering and community programmes with special emphasis on empowering women. The group has been successful in creating livelihood opportunities for numerous community women in the areas of tailoring, embroidery, knitting, making masala, pickles, fancy bags, gloves and in making, disposable cups and plates.
Livelihood and employability: ?ACC believes in empowerment of people and assisting them in sustainability of their livelihood, as that will make the community self-reliant and increase their self-respect,? says Panda. During the year, ACC?s various initiatives in this direction benefited 17,288 people. Under its employability initiatives, it supported training of 3,579 youth from poor families in the host community, of which, 2,501 persons were placed with various employers enabling a similar number of families to live above poverty line.
Building infrastructure for liveable neighborhoods
ACC plays a vital role in facilitating the creation and maintenance of basic infrastructure around all its operations such as roads, safe drinking water, deepening of ponds, and repairs to schools, Anganwadi and other community amenities. ACC makes every possible effort to make these basic necessities available to the neighbourhood communities, according to Panda.
Wherever needed, NGO partners join in to ensure quality execution of the projects. Efforts are also taken to bring benefits of government schemes for the welfare of village communities. Previously, ACC?s initiatives for infrastructure development benefited 435,392 people. Each plant contributed in creation of water harvesting structures and installation of hand pumps for drinking water. Excavation of pond for irrigation and other water uses, directly and indirectly benefited 272,418 people, whereas drinking water initiatives benefited 72,294 people.
Disaster response initiatives
ACC?s disaster relief support initiatives in these disaster affected areas of Uttarakhand and Maharashtra benefited 8,703 people. Uttarakhand faced devastation during disastrous flash floods in June 2013. ACC?s Disaster Response Team (DRT) reached out to affected villages in Uttarkashi region. 24 volunteers from various units of north region joined hands with Sales Unit, Dehradun. ACC?s DRT provided relief to the people through ACC Mobile Health Unit, doctors, nurses and pharmacists, along with safe drinking water, food and clothing.
CSR activities ACC?s corporate social responsibility helps the company in various ways. From building a more motivated workforce to becoming a sustainable entity, ACC aligns its initiatives keeping in mind its goals. Some such examples are as below:
Alternate fuels & raw materials (AFR): The concept of AFR involves substituting mainstream non-renewable fuel resources like coal with replenishable alternate fuels. A subsidiary activity of AFR is waste co-processing which is basically a means of waste management. Under the mainstream AFR activities, currently the Gagal plant is using mill scale (a reject from steel rolling mills) as a substitute for iron ore.
A few of waste management initiatives undertaken by ACC are as follows:
Maddukrrai Solid Waste Management Initiative: ACC Maddukarrai Cement Works in association with the local Panchayat, and NGO Hand in Hand/SEED Trust launched the ?Clean & Green Madukkarai?. The vision behind the initiative was to make Madukkarai a plastic and garbage-free community by 2015.
Team Madukkarai also plans to set up a bio-gasifier plant which consumes the bio-waste and produce methane gas which will be converted to electricity. This electricity will be used for lighting the local street lamps.
Co-processing of pine needles as alternative fuel at Gagal: Every year, particularly during the summer months, large numbers of such fires create havoc in the forests of the sub Himalayas. Forest fires cause immense loss of nutrient, organic material from the soil, damage to soil micro-organisms, change in soil structure, destruction of plantations and local extermination of small animals and plants.
One of the main reasons of the fire spreading to a large region is the presence of large spreads of dry leaves and wood at the bottom of the forest cover. ACC Gagal proposed a workable solution to AK Thakur, DFO of Suket Forest Division, to permit the company?s CSR team along with local villagers to collect pine needles (locally called Chalaru) for co-processing in the cement kiln at Gagal.
Green Building Centres (GBC)
The ACC GBC is designed to be a state-of-the-art one-stop-shop for housing expertise which will offer locally produced, eco-friendly, easy-to-use and reasonably priced construction products.
oVisitors to the centre get a first-hand glimpse of locally produced and reasonably priced construction products, with ready access to knowledge and training on how to use and apply these products in a rural context. The ACC GBC comes fully equipped with a quality control laboratory. The centre also has equipment which enables builders to manufacture the products on their own and thus achieve further savings,? says Panda.
ACC has collaborated with architects and experts who can provide consultations regarding the project, product detail, application and design.
ACC associates with well-established enterprises as well as NGOs to promote local entrepreneurial talent. While the entrepreneur is responsible to manage the centre, ACC supports the venture by providing its branded products backed with proven technical expertise. The entrepreneur runs it as a business and thus has an incentive to work for its success, creating local jobs along the way. This helps in the development of talent among the local rural population. The materials available at the ACC GBC are produced from local resources and incorporate waste materials like fly ash, helping to reduce its carbon footprint significantly and in preserving earth?s natural resources, while simultaneously keeping costs down.
ACC?s stellar employees
ACC?s understands that CSR activities go a long way in building relationships. ACC has a large workforce of about 9,000 people, comprising experts in various disciplines assisted by a dedicated workforce of skilled persons. ACC employees, referred to as the ACC parivar, come from all parts of the country and belong to a variety of ethnic, cultural and religious backgrounds. This helps ACC in connecting better with various communities across the country and to understand their needs. The dedication of the employees to pursue the CSR goal of the company reflects the special stellar qualities they possess. This has led to ACC employees being recognized as ?value-adding? human capital in the industry.
Pratyush Panda, Head – CSR, ACC
ACC believes in empowerment of people and assisting them in sustainability of their livelihood, as that will make the community self- reliant and increase their self-respect.
Concrete
Refractory demands in our kiln have changed
Published
3 days agoon
February 20, 2026By
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 agoon
February 20, 2026By
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 agoon
February 20, 2026By
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.
Refractory demands in our kiln have changed
Digital supply chain visibility is critical
Redefining Efficiency with Digitalisation
Cement Additives for Improved Grinding Efficiency
Digital Pathways for Sustainable Manufacturing
Refractory demands in our kiln have changed
Digital supply chain visibility is critical
Redefining Efficiency with Digitalisation
Cement Additives for Improved Grinding Efficiency
Digital Pathways for Sustainable Manufacturing
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Economy & Market3 weeks agoBudget 2026–27 infra thrust and CCUS outlay to lift cement sector outlook
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Concrete3 weeks agoJK Cement Commissions 3 MTPA Buxar Plant, Crosses 31 MTPA


