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There is the glaring need for a structured programme to train and certify…

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Dr. Surendra Manjrekar, Past President ICACI, and the Chairman and Managing Director of Sunanda Speciality Coatings

There is no doubt now that we are geared to face a drastic skill shortage in the construction sector if we do not take structured steps to curb the issue in time. India, a country with a growing economy, booming construction sector and vast population that speaks a multitude of languages, presents some unique challenges when it comes to skill training. The Indian Chapter of American Concrete Institute has taken the initiative to deal with this problem in its own innovative way. Dr. Surendra Manjrekar, Past President ICACI, and the Chairman and Managing Director, Sunanda Speciality Coatings elaborates on the initiative. Excerpts from the interview.

Which are the grey areas when it comes to ensuring the quality of concrete?

I have seen that in India, our technicians have a knowledge gap in several areas that impedes them from producing and ensuring good quality concrete. One has to have a general understanding about concrete as a material and should be well versed with the mechanism of hydration of cement. We lack awareness about good concrete practices, don´t have sufficient quality assurance or control measures of making good concrete. We must also put more stress on the testing of concrete in a green state and also in a hardened state for the required performance.

How wide is this knowledge gap?

The requirements mentioned above are unfortunately not factored in any contemporary engineering degree / diploma programme or in any site supervisors training imparted today in India.

India is one of the major concrete producing countries in the world today. The Construction industry has assumed a huge financial dimension of Rs. 400,000 crore per year. A substantial part of this expenditure is attributed to concrete. Hence, durability and desired usability for a given service life is a concern we must pay more attention to. Concrete practitioners and site supervisors have to acquire concrete-related experience on site and through self-motivation to excel. There is the glaring need for structured programme to train and certify concrete practitioners in various aspects of concrete and related activities.

How is the American Concrete Institute helping bridge this gap?

American Concrete Institute (ACI), 30 years ago, developed a highly structured programme in the form of ACI Certification Concrete Field Testing. Today more than 5,00,000 concrete practitioners who are certified by ACI, are working all over the world.

How active is ACI in India?

The first batch of trained professionals was certified in Chennai on August 2008. L and amp;T took the initiative and called 23 Senior Managers from all over the country and also from the Middle East to Chennai and a certification programme was conducted. From 2008 to December 2013, these certified professionals have played an excellent role of trainers with an estimated 2,500 personnel working under them who have already benefited in their direct contact with experts, over the past five years.

What is imparted during this training?

Apart from some of the points mentioned above, there are some direct benefits of the ACI Certification. Everyone involved in a construction project benefits from the use of certified technicians to perform the field tests on freshly mixed concrete. Proper performance of the tests improves the reliability of the test results.

How have you been associated with this initiative?

Resources in terms of trained and devoted expert faculty to train the candidates as well as the laboratory facility are the key requirements of the course. I took up the task of training candidates of all the 20 batches trained so far. Chetan Raiker, Chairman and Managing Director of Structwel Designers and Consultants, provided the lab facility, all complimentary.

Tell us about the `Train the trainer` initiative.

One simple but important reason, the course is in English, the manuals and codes too are in English. India is a country where we speak and communicate in a multitude of languages and as you know, English not being our first language, it is difficult to pass on the knowledge. Hence, we decided to train experts in these areas and to train them to train others in the language most comfortable to them.

Could you name a few companies that have benefited from the training?

One outstanding example of training and certification is of a contingent of 150 senior engineers from the Maharashtra Housing and Area Development Authority (MHADA). Along with MHADA and MIDC engineers, other reputed organisations like B. G. Shirke and amp; Co, K Raheja Corp, B. E. Billimoria, Lafarge Ready Mix, RMC, Ultratech RMC, Larsen and amp; Toubro, Sunanda Speciality Coatings, Hiranandani Constructions, Hirco, Godrej Properties, Unity Infraprojects, were all benefited by the course.

We also received participations from consulting firms like Shirish Patel and amp; Associates, Structwel Designers and Consultants, Shashank Mehendale and amp; Associates, SP Consultants, Epicons Consultants, Nina Industries, Bhagubhai College of Polytechnic, etc.

What are the technical factors influence the quality of concrete?

There are seven tests that one needs to perform on green concrete to assess its quality. If these factors are alright, the quality of the concrete is automatically maintained. We stress on monitoring and controlling temperature, sampling, slump density yield, and air content (gravimetric) of concrete, air content (pressure method). air content (volumetric method), Making and curing concrete test specimen in the field.

These seven parameters influence the performance of set concrete and when measured properly as per uniform methodology, can give very important information about the behaviour of hardened concrete. For example, concrete temperature is one of the most important factors influencing quality and time of the set strength of concrete. Without temperature control, , predicting concrete performance is very difficult, if not impossible.

Concrete temperature can give us the following indications about the properties of set concrete:

  • Concrete with high initial temperature will probably have higher than normal early strength and lower than normal ultimate strength. The overall quality of the concrete will also probably be lowered.
  • Conversely concrete placed and cured at low temperatures will develop strength at a slower rate but ultimately will have higher strength and be of a higher quality.
  • Temperature of concrete is used to indicate the type of curing and protection that will be needed, as well as the length of time the curing and protection should be maintained.

Air content is another very important but unfortunately frequently ignored factor.

  • Air content measurement of normal and heavy weight concretes and will decide the entrained and entrapped air in concrete.
  • Too much entrained air causes problems, eg: concrete designed for 20-35 MPA as the air content increases above 1 per cent air can reduce the strength by 3-5 per cent.
  • All these tests are performed thoroughly by our certified field testers.

    So how many concrete field testers are available today?

    Today India has more than 400 or so concrete field testing – ACI certified personnel. Another 200 engineers are lined up for training. Together, these 600 trainers will pass this knowledge to say 60,000 field technicians.

    But is this number enough to reach the entire country?

    No, it is far from sufficient. NSDC has targeted to train only 150 million people out of an incremental demand of 240 million by 2022. This underlines the need of several agencies to cater to the requirement.

    What are the challenges faced by ACI?

    There are a few challenges on the way ahead. ACI certification is based on ASTM standards. Throughout the country, the Indian Code BIS 456 is followed. ASTM has no acceptance or cross- reference in the Indian Standard. This lack of choice confuses many specifiers / practitioners/consultants/federal departments, etc.

Concrete

Reimagining Logistics: Spatial AI and Digital Twins

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Digital twins and spatial AI are transforming cement logistics by enabling real-time visibility, predictive decision-making, and smarter multi-modal operations across the supply chain. Dijam Panigrahi highlights how immersive AR/VR training is bridging workforce skill gaps, helping companies build faster, more efficient, and future-ready logistics systems.

As India accelerates infrastructure investment under flagship programs such as PM GatiShakti and the National Infrastructure Pipeline, the pressure on cement manufacturers to deliver reliably, efficiently, and cost-effectively has never been greater. Yet for all the modernisation that has taken place on the production side, the end-to-end logistics chain, from clinker dispatch to the last-mile delivery of bagged cement to construction sites, remains a domain riddled with inefficiencies, opacity and manual decision-making.
The good news is that a new generation of spatial computing technologies is now mature enough to transform this reality. Digital twins, spatial artificial intelligence (AI) and immersive augmented and virtual reality (AR/VR) training platforms are converging to offer cement producers something they have long sought: real-time visibility, autonomous decision-making at the operational edge, and a scalable solution to the persistent skills gap that hampers workforce performance.

Advancing logistics with digital twins
The cement supply chain is uniquely complex. A single integrated plant may manage limestone quarrying, kiln operations, grinding, packing and despatch simultaneously, with finished product flowing through rail, road, and waterway networks to reach hundreds of regional depots and distribution points. Coordinating this network using spreadsheets, siloed ERP data, and phone calls is not merely inefficient; it is a structural liability in a competitive market where delivery reliability is a key differentiator.
Digital twin technology offers a way out. A cement logistics digital twin is a continuously updated, three-dimensional virtual replica of the entire supply chain, from the truck loading bays at the plant to the inventory levels at district depots. By ingesting data from IoT sensors on conveyor belts and packing machines, GPS trackers on road and rail fleets, weighbridge records, and weather feeds, the digital twin provides planners with a single, authoritative picture of where every ton of cement is, in real time.
The value, however, goes well beyond visibility. Because the digital twin mirrors the physical system in dynamic detail, it can run scenario simulations before decisions are executed. If a primary rail corridor is disrupted, logistics managers can model alternative routing options, shifting volumes to road or coastal shipping, and assess the cost and time implications within minutes rather than days. If a packing line at the plant is running below capacity, the twin can automatically recalculate dispatch schedules downstream and alert depot managers to adjust receiving resources accordingly.
For cement companies operating multi-plant networks across geographies as varied as Rajasthan and the North-East, this kind of end-to-end situational awareness is transformative. It collapses information latency from hours to seconds, enables proactive rather than reactive logistics management, and creates the data foundation upon which AI-driven decision-making can be built. Companies that have deployed logistics digital twins in comparable heavy-industry contexts have reported reductions in transit time variability of up to 20 per cent and meaningful decreases in demurrage and detention costs, savings that flow directly to the bottom line.

Smart logistics operations
A digital twin is only as powerful as the intelligence layer that sits on top of it. This is where Spatial AI becomes the critical differentiator for cement logistics.
Traditional logistics management systems are reactive. They record what has happened and flag exceptions after the fact. Spatial AI systems, by contrast, are proactive. They continuously analyse the state of the logistics network as represented in the digital twin, identify emerging bottlenecks before they crystallise into delays, and recommend corrective actions.
At the plant gate, AI-powered visual inspection systems using spatial depth-sensing cameras can assess truck conditions, verify load integrity and confirm seal tamper status in seconds, replacing the manual checks that currently slow throughput. At the depot level, Spatial AI can monitor stock drawdown rates in real time, cross-reference them against pending customer orders and inbound shipment ETAs, and automatically trigger replenishment orders when safety thresholds are approached. In transit, AI systems processing GPS and telematics data can detect anomalous vehicle behaviour, including extended stops, route deviations, speed irregularities and alert fleet managers instantly.
Perhaps most significantly for Indian cement logistics, Spatial AI can optimise the complex multi-modal routing decisions that are central to competitive cost management. Given the variability in road quality, seasonal accessibility, rail rake availability, and regional demand patterns across India’s vast geography, the combinatorial complexity of routing optimisation is beyond human planners working with conventional tools. AI systems can process this complexity continuously and adapt routing recommendations as conditions change, reducing empty running, improving vehicle utilisation and cutting fuel costs.
The agentic dimension of modern AI is particularly relevant here. Agentic AI systems do not merely analyse and recommend; they act. In a cement logistics context, this means an AI system that can, within pre-authorised boundaries, directly communicate revised dispatch instructions to plant teams, update booking confirmations with freight forwarders and reallocate available rail rakes across plant locations, all without waiting for a human to process a recommendation and make a call. For logistics executives, this represents a genuine shift from managing a workforce to setting the rules of engagement and reviewing outcomes. The operational tempo achievable with agentic AI simply cannot be matched by human-in-the-loop systems working at the pace of emails and phone calls.

Bridging the skills gap
Technology investments in digital twins and spatial AI will deliver diminishing returns if the human workforce cannot operate effectively within the new systems they create. This is a challenge that India’s cement industry cannot afford to underestimate. The sector relies on a large, geographically dispersed workforce, including truck drivers, depot managers, despatch supervisors, fleet maintenance technicians, many of whom have been trained on paper-based processes and manual workflows. Retraining this workforce for a digitised, AI-augmented environment is a substantial undertaking, and conventional classroom or on-the-job training methods are poorly suited to the scale and pace required.
Immersive AR and VR training platforms offer a fundamentally different approach. By creating photorealistic, interactive simulations of logistics environments, such as a plant dispatch bay, a depot yard, the interior of a cement truck cab, allow workers to practice complex procedures and decision-making scenarios in a safe, consequence-free virtual environment. A depot manager can work through a simulated rail rake delay scenario, making decisions about customer allocation and communication
without the pressure of real orders being affected. A truck driver can practice the correct procedure for securing a load of bagged cement without the risk of a road incident.
The learning science case for immersive training is compelling. Studies consistently show that experiential, simulation-based learning produces faster skill acquisition and higher retention rates than didactic instruction, with some research indicating retention rates three to four times higher for VR-based training compared to classroom methods. For complex operational procedures where muscle memory and situational awareness matter as much as conceptual knowledge, the advantage of immersive simulation is even more pronounced.
Today’s leading cloud-based spatial computing platforms enable high-fidelity AR and VR training experiences to be delivered on standard mobile devices, removing the hardware barrier that has historically made immersive training impractical for large, distributed workforces. This is particularly relevant for cement companies with depots and logistics operations in tier-two and tier-three locations, where access to specialised training hardware cannot be assumed.
The integration of AR into live operations also creates ongoing learning opportunities beyond formal training programs. As an example, maintenance technicians equipped with AR overlays can receive step-by-step guidance for equipment procedures directly in their field of view, reducing error rates and service times for critical plant and fleet assets.

New strategy, new horizons
India’s cement industry is entering a period of intensifying competition, rising logistics costs, and demanding customers with shrinking tolerance for delivery variability. The companies that will lead over the next decade will be those that treat logistics not as a cost centre to be minimised, but as a strategic capability to be built.
Digital twins, spatial AI and immersive AR/VR training are not distant future technologies, they are deployable today on infrastructure that Indian cement companies already operate. The question is not whether to adopt them, but how quickly to do so and where to begin.

About the author:
Dijam Panigrahi is Co-Founder and COO of GridRaster Inc., a provider of cloud-based spatial computing platforms that power high-quality digital twin and immersive AR/VR experiences on mobile devices for enterprises. GridRaster’s technology is deployed across manufacturing, logistics and infrastructure sectors globally.

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Concrete

Beyond Despatch: Building a Strategic Supply Chain Process

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Dr SB Hegde, Global Cement Industry Leader discusses the imperative need for modern cement plants to recognise packaging and bag traceability as critical components of quality assurance and supply chain management.

In cement manufacturing, considerable attention is given to clinker quality, kiln operation, grinding efficiency and laboratory control. Yet the final stage of the process, cement packaging and despatch, often receives less strategic focus. The cement bag leaving the plant gate represents the final interface between the manufacturer and the customer. Even if clinker chemistry, fineness and strength development are well controlled, weaknesses in packaging, handling, or distribution can affect product quality before it reaches the construction site.
Operational experience from cement plants across different regions shows that packaging efficiency and bag traceability have a significant influence on product reliability, logistics performance and brand credibility. In modern cement plants, packaging systems are no longer viewed merely as despatch equipment. They are increasingly recognised as an important part of quality assurance, supply chain management and customer confidence.

Operational importance of packaging
Cement packaging systems must operate with high speed, accuracy and reliability to support efficient despatch operations. Rotary packers equipped with electronic weighing systems have improved packing accuracy and productivity in many plants.
However, maintaining operational discipline remains essential. Regular calibration of weighing systems, maintenance of packer spouts and proper bag application are important for maintaining consistent bag weights and preventing cement loss.
Operational benchmarks observed in many cement plants are summarised in Table 1.
Plants that improved calibration discipline and equipment maintenance have reported packing loss reductions of about 1 per cent to 1.5 per cent, which represents significant annual savings.

Quality assurance beyond the plant gate
Quality control in cement plants traditionally focuses on laboratory parameters such as fineness, compressive strength and chemical composition. However, the condition of cement when it reaches the customer is equally important.
Cement bags may travel through several stages including plant storage, transport vehicles, dealer warehouses and retail outlets before reaching the construction site. During this journey, cement may be exposed to humidity, rough handling and improper storage conditions.
Table 2 shows common factors that may affect cement quality during distribution.
Studies indicate that cement stored under humid conditions for long periods may experience 10 per cent to 20 per cent reduction in early strength. Therefore, maintaining proper packaging integrity and traceability is essential.

Role of cement bag traceability systems
Traceability systems allow manufacturers to identify when and where cement was produced and despatched. These systems connect packaging operations with production records and logistics data.
When customer complaints occur, traceability enables manufacturers to identify:

  • Production batch
  • Packing date and time
  • Plant location
  • Laboratory test results

Several technologies are used to implement bag traceability, as shown in Table 3.
Among these technologies, QR code authentication systems are becoming popular because customers can verify product authenticity through smartphones.

Digital transformation
Digital technologies are transforming cement packaging operations. Modern packing lines now integrate:

  • automated rotary packers
  • electronic bag counting systems
  • robotic palletising systems
  • ERP-based despatch management
  • digital supply chain monitoring

These technologies improve operational efficiency and transparency across the supply chain.
Such systems help manufacturers track cement movement across the distribution network and respond quickly to quality concerns.

Case Study: Digital Cement Bag Authentication
Several cement manufacturers in Asia and the Middle East have implemented QR code-based bag authentication systems to improve supply chain transparency.
In one integrated cement plant, QR codes were integrated into the rotary packing machine. Each cement bag received a unique digital identity linked to the production database.
The QR code contained information such as:
• plant location
• manufacturing date and time
• product type
• batch number

Customers and dealers could scan the code using a mobile application to verify product authenticity.
After implementation, the company reported:
• reduction in counterfeit bag circulation
• improved despatch data accuracy
• faster resolution of customer complaints
• better visibility of distribution networks

The system was also integrated with the company’s ERP platform, enabling real-time monitoring of production and despatch activities.

Future-Smart Packaging Systems
The future of cement packaging lies in the integration of Industry 4.0 technologies with logistics and supply chain management.
Packaging lines will increasingly become part of connected digital ecosystems linking production, quality control, despatch and market distribution.
Artificial intelligence and data analytics may also help detect abnormalities in bag weight variations, equipment performance and despatch patterns.

Global benchmark indicators
Global benchmarking of cement packaging operations highlights the increasing importance of efficiency, automation and digital traceability in modern cement supply chains. Leading cement plants are now focusing on key performance indicators such as packer availability, bag weight accuracy, packing losses, truck turnaround time and digital traceability coverage. Studies show that overall equipment effectiveness (OEE) in many industrial operations is still around 65 per cent to 70 per cent, whereas world-class plants aim for levels above 85 per cent, indicating significant scope for improvement in operational efficiency.
At the same time, the global cement packaging sector is expanding steadily, supported by growing infrastructure demand and increased emphasis on reliable and moisture-resistant packaging solutions. The cement packaging market is projected to grow steadily in the coming decade as companies adopt automation, smart packaging technologies and integrated logistics systems to improve despatch efficiency and supply chain transparency. In this context, benchmarking against global indicators helps cement plants identify performance gaps and adopt best practices such as automated bagging systems, QR-based traceability, ERP-linked despatch monitoring, and predictive maintenance of packing equipment.

Strategic Recommendations
To fully benefit from packaging and traceability systems, cement manufacturers should consider the following approaches.
• Packaging systems should be treated as an integral part of the manufacturing value chain rather than simply despatching equipment.
• Investments in modern packers, automated loading systems and digital traceability technologies should be encouraged.
• Industry associations may also promote standard traceability practices to reduce counterfeit products and improve transparency in the cement market.
Finally, continuous training of plant personnel in packaging operations and maintenance practices is essential for sustaining operational efficiency.

Conclusion
Cement packaging has evolved from a routine mechanical operation into a strategic component of modern cement manufacturing. Efficient packaging systems ensure that the quality achieved within the plant is preserved during transportation and distribution. Traceability technologies allow manufacturers to track cement movement, investigate complaints and prevent counterfeit products.
As the cement industry moves toward digitalisation and integrated supply chains, packaging and bag traceability will play an increasingly important role in quality assurance, operational efficiency and customer confidence. Ultimately, the cement bag leaving the plant carries not only cement but also the reputation and responsibility of the manufacturer.

References

  1. Hewlett, P.C., & Liska, M. (2019). Lea’s Chemistry of Cement and Concrete. Butterworth-Heinemann.
  2. Schneider, M., Romer, M., Tschudin, M., & Bolio, H. (2011). Sustainable cement production. Cement and Concrete Research, 41(7), 642–650.
  3. International Cement Review. (2023). Advances in cement packaging and logistics systems.
  4. World Business Council for Sustainable Development (2021). Cement Industry Supply Chain Innovation Report.
  5. Gartner, E., & Hirao, H. (2015). Reducing CO2 emissions in cement production. Cement and Concrete Research.
  6. ScienceDirect Industry Studies. (2024). Operational efficiency benchmarks and overall equipment effectiveness in industrial manufacturing systems.
  7. World Cement Association. (2022). Digital Transformation in Cement Manufacturing and Logistics. London.
  8. Towards Packaging Research. (2024). Global cement
    packaging market trends and technology outlook. Industry Market Analysis Report.
  9. Towards Packaging Research. (2024). Global cement
    packaging market trends and technology outlook. Industry Market Analysis Report.

About the author:
Dr SB Hegde is a Professor at Jain College of Engineering, Karnataka, and Visiting Professor at Pennsylvania State University, USA. With 248 publications and 10 patents, he specialises in low-carbon cement, Industry 4.0, and sustainability, consulting with cement companies to support India’s net-zero goals.

Table 1. Key Operational Parameters for Cement Packaging Systems

Parameter Typical Industry Range Recommended Target Operational Significance
Rotary packer capacity 2400–3600 bags/hr 3000–4000 bags/hr Improves despatch efficiency
Bag weight tolerance ±0.5 kg ±0.25 kg Reduces customer complaints
Bag leakage rate 1 per cent to 2 per cent <0.5 per cent Minimises cement loss Packing accuracy 98 per cent to 99 per cent >99.5 per cent Ensure compliance with standards
Truck loading time 30–45 minutes 20–30 minutes Improves logistics efficiency

Table 2. Causes of Cement Quality Degradation During Distribution
Factor Typical Cause Impact on Cement
Moisture exposure Poor storage or rain exposure Lump formation
Long storage duration Slow inventory turnover Loss of early strength
Bag damage Rough handling Cement loss
Improper stacking Excessive loading Bag rupture
Counterfeit bag reuse Refilling of empty bags Brand damage

Table 3. Comparison of Cement Bag Traceability Technologies
Technology Advantages Limitations
Printed batch code Low cost and simple Limited traceability
Barcode Fast scanning Requires equipment
QR code Smartphone verification Requires digital platform
RFID tagging Automated tracking Higher cost
Blockchain systems High transparency Complex implementation

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Economy & Market

SEW-EURODRIVE India Opens Drive Technology Centre in Chennai

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The new facility strengthens SEW-EURODRIVE India’s manufacturing, assembly and service capabilities

SEW-EURODRIVE India has inaugurated a new Drive Technology Centre (DTC) in Chennai, marking a significant expansion of its manufacturing and service infrastructure in South India. The facility is positioned to enhance the company’s responsiveness and long-term support capabilities for customers across southern and eastern regions of the country.

Built across 12.27 acres, the facility includes a 21,350-square-metre assembly and service setup designed to support future industrial growth, evolving application requirements and capacity expansion. The centre reflects the company’s long-term strategy in India, combining global engineering practices with local manufacturing and service capabilities.

The new facility has been developed in line with green building standards and incorporates sustainable features such as natural daylight utilisation, solar power generation and rainwater harvesting systems. The company has also implemented energy-efficient construction and advanced climate control systems that help reduce shopfloor temperatures by up to 3°C, improving production stability, product quality and working conditions.

A key highlight of the centre is the 15,000-square-metre assembly shop, which features digitisation-ready assembly cells based on a single-piece flow manufacturing concept. The facility also houses SEW-EURODRIVE India’s first semi-automated painting booth, aimed at ensuring uniform surface finish and improving production throughput.

With the commissioning of the Chennai Drive Technology Centre, SEW-EURODRIVE India continues to strengthen its manufacturing footprint and reinforces its long-term commitment to supporting industrial growth and automation development in India.

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