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Creating a Carbon Sink

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Olli Hänninen, Owner and Co-founder, Moviator Oy, discusses the future of decarbonising cement through smart material utilisation.

Over the decades, the cement sector has advanced from scale to sophistication, and now it faces its most profound transformation yet — decarbonisation of one of the world’s most carbon-intensive industries.
The theme — The 3Cs: Cut, Cement, Carbon — captures a new mindset. Cutting emissions is no longer just about compliance; it is central to competitiveness. Cement, once seen as a fixed formula, is being reimagined through technology and circularity. And carbon itself, traditionally treated as waste, is emerging as a potential input. Together, these three Cs define not only a challenge but also a remarkable opportunity.

Cement’s dual carbon burden
Cement production carries a double carbon burden — from both the energy required to heat kilns and the chemical release of CO2 from limestone during clinker production. Even with modern efficiency improvements, the underlying chemistry of the process remains inherently carbon-intensive.
Traditional ‘Cut’ measures — improving thermal efficiency, using alternative fuels, or lowering the clinker factor — are vital, but not sufficient on their own. The next step lies in rethinking the materials themselves: how we process them, how we use them, and how we can capture and store carbon directly within them.

Slag: From by-product to resource
Among industrial by-products, steelmaking slag stands out as one of the most underused materials in the journey to decarbonisation. Produced at roughly 200 kg per tonne of steel, it is often stockpiled or landfilled, despite containing valuable calcium- and magnesium-bearing compounds.
Blast-furnace slag from ironmaking is already widely used in blended cements, but steel slags from basic oxygen or electric arc furnaces remain challenging. They are heterogeneous, often solidifying into massive rock-like blocks known as steel skulls, or into finer, inconsistent fractions. These forms are difficult to process and integrate reliably into cement production.
Yet this complexity conceals opportunity. Slag is abundant, stable, and — with the right processing — capable of replacing a large share of clinker while storing CO2 within its structure.

Unlocking the hidden value in slag
At Moviator Oy, we focus on two critical and often overlooked fractions of steelmaking slag that have historically been difficult to process — but which hold immense untapped potential for decarbonising cement and improving circularity in steel production.

1. Large solidified steel skulls
These massive, irregular formations solidify at the bottom of ladles or converters and have traditionally been cut apart using oxygen lances — a slow, energy-intensive, and hazardous process. Moviator has developed an innovative process that enables the efficient treatment of solidified steel skulls, eliminating the need for conventional thermal cutting and improving material recovery.
Once treated, the recovered metallic portions are returned to the steelmaking cycle, while the mineral component is directed for cementitious applications. This dual recovery approach maximises resource efficiency, reduces waste, and lowers both carbon and energy footprints across the steel and cement value chains.

2. The sub-50 mm fine fraction
At the other end of the size spectrum, finer slag particles can be further refined through advanced grinding techniques, achieving reactivity levels well above standard cement benchmarks. This transformation enhances the slag’s ability to act as an effective supplementary cementitious material (SCM), capable of replacing a substantial portion of the clinker in blended cements.
Together, these two complementary approaches — recovery and recycling of steel skulls and activation of fine slag through precision grinding — enable Moviator to transform slag from an inert by-product into a high-performance, low-carbon cement material, while simultaneously closing the loop within the steel industry.
This material transformation is only the first step. The next challenge — and opportunity — lies in what we do with carbon itself.

Beyond storage: Turning CO2 into stone
Most global attention focuses on carbon capture and storage (CCS) — compressing CO2 and injecting it underground. While CCS has value, it raises questions of permanence, cost, and long-term monitoring.
Moviator takes a different path: carbon utilisation through mineral carbonation. In simple terms, captured CO2 reacts with calcium- and magnesium-rich compounds in slag to form stable carbonates, effectively turning gaseous emissions into solid minerals within a controlled process environment.

This approach achieves two outcomes:
1. Permanent carbon binding: CO2 is locked into a solid matrix with no risk of re-release.
2. Improved material properties: Carbonated slag is more stable and can exhibit enhanced early strength and durability.
This is more than a laboratory concept. Pilot-scale work has already demonstrated that 4–5 tonnes of slag can permanently store around one tonne of CO2, confirming that industrial by-products can become long-term carbon sinks within a circular cement economy.

A realistic path to a circular, carbon-negative loop
Our vision is a circular, carbon-negative cement ecosystem — one that absorbs more CO2 than it emits. In this system, industrial waste becomes both raw material and carbon storage medium, creating a closed loop between the steel, cement, and carbon management sectors.

This concept builds on real trends already taking shape:

  • Cement plants near steelworks using slag as feedstock.
  • Pilot carbonation systems integrating captured CO2 from industrial exhausts.
  • Early life-cycle assessments showing that mineralised slag can achieve net CO2 reductions of 70–90 % compared to conventional clinker.

However, realising a fully circular model will require more than technology. It will demand:

  • Clean energy for grinding and carbonation to ensure net carbon benefits.
  • Proximity and logistics between steel, cement and CO2 sources.
  • Updated standards and policies that recognise mineral carbonation as a verified form of carbon removal.

Currently, most climate frameworks credit geological storage but not yet mineralised products. Changing that will take collaboration between innovators, regulators, and investors. Still, the direction is clear: CO2 mineralisation is emerging as a credible, permanent carbon sink with industrial-scale potential.

Practical optimism: Balancing vision and reality
The idea of a carbon-negative cement industry is ambitious — and it should be. Cement contributes roughly 7-8 per cent of global CO2 emissions, so any solution must be bold. But ambition must come with realism.
Scaling up slag carbonation will take time. Reactors must handle large volumes efficiently, and the economics depend on CO2 availability, energy costs, and policy incentives. Yet progress is rapid: several European plants are already demonstrating carbonated aggregates and binder materials commercially.
Moviator’s strategy reflects this practical optimism — combining proven engineering principles with forward-looking applications. Each tonne of refined, carbonated slag replaces high-emission clinker and locks away CO2 permanently, turning waste into value step by step.

The mindset shift: The 3Cs reimagined
The 3Cs — Cut, Cement, Carbon — are not separate goals but interconnected levers of transformation:

  • Cut emissions by improving efficiency and material circularity.
  • Cement innovation by replacing clinker with reactive industrial by-products.
  • Carbon redefined as a useful input, not just a waste stream.

To truly decarbonise, the industry must embrace both radical innovation and practical integration. Every action that converts waste to raw material and emissions to mineral stability brings us closer to a sustainable cement future.

From incremental to transformative
Decarbonising cement will not happen overnight. It will take imagination, cross-sector collaboration and new standards that reward permanent carbon binding. But the tools are already here — from smarter slag processing to direct CO2 mineralisation.
Moviator’s work in refining steel skulls and utilising slag demonstrates that circular, low-carbon materials are not science fiction. They are emerging now, one pilot and partnership at a time.
The 3Cs mindset is ultimately about shifting perception — from seeing materials as static commodities to viewing them as active agents in the carbon cycle. Through this lens, cement production can evolve from a major emitter to a permanent carbon sink, helping build not only the world’s infrastructure but also its climate resilience.

ABOUT THE AUTHOR:
Olli Hänninen, Owner and Co-founder, Moviator Oy, helps industries maximise material recovery with advanced slag processing technology.

Economy & Market

RAHSTA Roundtable Sets Agenda for Smarter, Safer Highways

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Roundtable discussions focus on innovation for safer highways.

Held on 12 March 2026 at Courtyard by Marriott, Mumbai, alongside the Infrastructure Today Airport Conclave, the RAHSTA Roundtable brought together stakeholders from across the highways and infrastructure ecosystem to shape the agenda for the 16th RAHSTA 2026, scheduled for 8–9 July 2026 at the Jio Convention Centre, Mumbai. The session focused on key industry themes including road construction, technology, safety and long-term sustainability.

Opening the discussion, Pratap Padode, Founder, FIRST Construction Council, said the roundtable marked the beginning of a broader consultative process leading up to the July event. The aim, he noted, is to bring together industry stakeholders to refine the agenda for discussions on the future of roads, bridges, tunnels and allied infrastructure.

Padode noted that while central road project awards have slowed in recent years, states are increasingly driving the next phase of infrastructure growth. Maharashtra, with its long-term road development plans and agencies such as MSRDC and MSIDC, is expected to play a significant role in this expansion.

RAHSTA Expo 2026 as a specialised platform dedicated to road infrastructure, covering highways, tunnels, bridges and flyovers along with construction technologies, safety systems and maintenance solutions. He also highlighted the growing importance of rural connectivity and said the organisers are engaging with government bodies to highlight rural road development initiatives.

Tanveer Padode, CIO, ASAPP Info Group, presented insights from IMPACCT, the group’s infrastructure intelligence platform. He pointed to a strong project pipeline despite slower highway awards earlier in the year, noting that states such as Maharashtra, Odisha and Arunachal Pradesh are emerging as key drivers of new projects. The data also revealed that only a small group of contractors participates in large-value infrastructure bids.

Lt Gen Rajeev Chaudhary, former Director General, Border Roads Organisation and Chairman of the RAHSTA Expo Committee, emphasised the need for stronger collaboration across the ecosystem, including policymakers, contractors, technology providers and financiers. He also called for addressing systemic issues within the sector and encouraged greater participation of women in infrastructure leadership.

The discussion also explored the evolving economics of road development. Phani Prasad Mandalaparthy, Associate Director, CRISIL Intelligence, noted that the slowdown in project awards reflects a shift towards higher-value logistics corridors rather than simple road widening projects. However, private participation through BOT and TOT models remains limited.

From the contractors’ perspective, Sudhir Hoshing, Whole-Time Director, Ceigall, said companies are becoming more selective in bidding, favouring projects with clearer payment mechanisms and efficient processes. While NHAI continues to offer greater operational clarity, states such as Uttar Pradesh and Bihar were cited as relatively supportive environments for project execution.

Durability and sustainability also emerged as key themes. Himanshu Agarwal, COO – Road & Infrastructure, Zydex Group India, highlighted the need to prioritise lifecycle performance and resilient pavements, while participants discussed the potential of alternative materials such as plastic waste, steel slag and industrial by-products in road construction.

Dr LR Manjunatha, Vice President, JSW Cement, emphasised that India has abundant fly ash, slag and other industrial materials that can improve durability and sustainability if integrated into specifications and policy frameworks.

Technology and equipment challenges were also discussed. Dr Lakshmana Rao Mantri, Dy General Manager, Afcons Infrastructure, highlighted the shortage of tunnel boring machines (TBMs), which is delaying several underground infrastructure projects. Participants agreed that developing domestic TBM manufacturing capabilities will be critical for future infrastructure expansion.

The future of concrete pavements was another area of discussion. Dr V Ramachandra, President, Indian Concrete Institute, stressed that the debate should focus on lifecycle performance rather than material choice alone, noting that evolving design standards are improving the feasibility of concrete roads.

Prof Dharamveer Singh of IIT Bombay added that while India has made significant progress in infrastructure development, stronger capacity building and better execution practices are essential to ensure consistent road quality.

The discussion also touched upon technology adoption in the sector. Rushabh Mamania, Partner & CBO, Roadvision, highlighted the growing role of AI in road infrastructure, noting that AI-driven monitoring systems are already being deployed across large stretches of national highways.

Overall, the roundtable underscored that the future of highway infrastructure will depend not only on the pace of construction but also on durability, safety, technology integration and sustainable materials. The discussions offered valuable insights that will help shape the agenda for RAHSTA 2026 and guide future collaboration within the industry.

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Economy & Market

CTS Roundtable Charts Tech-Led Roadmap for Construction

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CTS Roundtable Maps Technology Roadmap for Construction

Ahead of the Construction Technology Show (Con Tech Show) 2026, industry leaders, technology innovators and academia came together in Mumbai to deliberate on how digitalisation, automation and industrialised construction can reshape the sector. The discussion made one thing clear: construction can no longer afford to treat technology as optional.

Held on 12 March 2026 at Courtyard by Marriott, Mumbai, alongside the Infrastructure Today Airport Conclave, the CTS Roundtable served as a precursor to the Construction Technology Show 2026, scheduled for 19–20 August 2026 at NESCO, Mumbai.

A platform to move from discussion to deployment

Opening the session, Pratap Padode, Founder and Editor-in-Chief, ASAPP Info Global Group, said construction technology has long remained close to his heart, especially given the sector’s traditionally slow pace of technology adoption. He noted that over the years, the Construction Technology Summit had steadily built interest, and the next step was now to expand it into a larger, more meaningful platform that could bring together technology providers, users, startups and innovators under one roof.

Padode said the vision for CTS is not limited to software alone. The platform aims to embrace all forms of technology that can improve construction efficiency, quality and execution—from digital tools and project management systems to lean construction, off-site fabrication and startup-led innovation. He also highlighted plans to deepen startup participation and create space for young companies to showcase emerging construction solutions.

Industry at a turning point

Moderating the roundtable, Naushad Panjwani, Chairman, Mandarus Partners, set the context by pointing out that the global construction industry, despite being a multi-trillion-dollar sector, continues to lag in productivity. He noted that while manufacturing has consistently improved efficiency, construction has remained slow to modernise.

Referring to both global and Indian trends, Panjwani underlined that the industry is now at a decisive moment. India, he said, is entering a major build cycle, and delivering the next phase of infrastructure and real estate growth through traditional methods alone is no longer viable. The goal of the roundtable, therefore, was not to debate technology in isolation, but to identify the most critical conversations that would bridge the gap between innovation and implementation.

His central message was clear: CTS 2026 must be shaped around themes that make CEOs, CIOs and CTOs feel they cannot afford to miss the event.

From BIM to AI, data to governance

A major theme that emerged through the discussion was the need for better data, better visibility and better decision-making. Dr Venkata Santosh Kumar of IIT Bombay echoed this, saying that the underlying data infrastructure itself needs attention. Construction projects, particularly remote ones, often face issues around connectivity, data collection and data use. Without this foundation, more advanced technologies cannot deliver their full value.

Chandra Vasireddy, CEO & Co-founder, Inncircles, expanded the discussion to governance, arguing that technology must help connect the many moving parts of a construction business. For him, the real value of digital transformation lies in creating better governance, clearer visibility and stronger business outcomes.

Tejas Vara of Inncircles stressed the importance of timely site data for leadership teams, especially in large and remote projects where decisions on materials, machinery and manpower often get delayed because information does not reach headquarters in time.

The role of AI also featured prominently. Rushabh Mamania, Partner and CBO, Roadvision said that while AI and machine learning are now common terms, vision intelligence and language intelligence have still not deeply penetrated the construction sector. He emphasised that startups in India are building relevant AI-led solutions and are already attracting international interest, showing that innovation need not be imported—it can be built locally and scaled globally.

Industrialised construction gains ground

The roundtable also placed strong emphasis on industrialised construction methods. Kalyan Vaidyanathan, CTO – Construction & R&D, Tvasta, called for greater focus on off-site fabrication and the broader industrialisation of construction. Bhargav Jog, General Manager, Dextra, highlighted precast technology and alternative sustainable materials as areas with immediate relevance.

Several participants agreed that modular, precast and pre-engineered approaches are no longer niche ideas. They are increasingly becoming practical responses to the sector’s challenges around labour shortage, timelines, quality control and predictability.

Anup Mathew, Sr VP & Business Head, Godrej, argued that the industry needs a fully integrated approach—from design and procurement to execution and asset management. Unless these are connected, technology adoption will remain fragmented and sub-optimal. He pointed to pre-engineered and modular systems as examples of how industrial thinking can compress timelines, improve quality and reduce dependence on difficult on-site conditions.

Adoption remains the biggest hurdle

While there was broad agreement on the promise of technology, the discussion repeatedly returned to one fundamental challenge: adoption.

Abhishek Kumar, COO, LivSYT, observed that the market is crowded with solutions, but many buyers still struggle to evaluate which technology suits which use case. According to him, the industry needs clearer frameworks to help users select, compare and adopt solutions, rather than expecting a single platform to solve every problem.

Dr Tenepalli JaiSai, Associate Professor, School of Construction(SoC), NICMAR University, noted that isolated technologies will not solve the productivity problem by themselves. What is required is an integrated Construction 4.0 approach, where digital, physical and cyber-physical systems work together rather than in silos.

That concern around silos was reinforced by Subodh Dixit, former Director, Shapoorji Pallonji, who said the issue is not just that technologies are disconnected, but that stakeholders are as well. Clients, consultants, contractors and partners often operate with different priorities. Unless these silos are broken, technology will struggle to percolate across the full project value chain.

Harleen Oberoi, Project Management, Tata Realty shared a practical perspective from the client side, saying that successful BIM implementation requires investment across the ecosystem, not just within one organisation. Trade partners, vendors and other stakeholders must also be trained and aligned if the technology is to deliver its intended results.

Beyond buzzwords

A notable takeaway from the session was that the industry is moving past the phase of treating technology as a buzzword. Participants repeatedly stressed that the real question is not whether technology should be used, but where it creates measurable value and how that value can be scaled.

The conversation also expanded beyond mainstream themes to include repairs and rehabilitation, construction and demolition waste, sustainability, circular economy, green sourcing, carbon measurement, design interoperability, generative design, robotics, and the role of horticulture and greener built environments.

Setting the agenda for CTS 2026

By the close of the session, the roundtable had surfaced a strong set of themes for the upcoming show: BIM and digital twins, AI and data platforms, industrialised construction, startup innovation, governance-led technology adoption, robotics, sustainable materials, and integrated project delivery.

More importantly, the session established CTS 2026 as more than an exhibition. It is shaping up to be a serious industry platform where users, technology providers, researchers and policymakers can collectively define the future of construction.

As Padode noted in his closing remarks, the conversation will continue through further consultations and possibly webinars in the run-up to the show. If the roundtable is any indication, CTS 2026 will aim not merely to showcase technology, but to push the industry towards meaningful adoption at scale.

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Economy & Market

Smart Pumping for Rock Blasting

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SEEPEX introduces BN pumps with Smart Joint Access (SJA) to improve efficiency, reliability, and inspection speed in demanding rock blasting operations.
Designed for abrasive and chemical media, the solution supports precise dosing, reduced downtime, and enhanced operational safety.

SEEPEX has introduced BN pumps with Smart Joint Access (SJA), engineered for the reliable and precise transfer of abrasive, corrosive, and chemical media in mining and construction. Designed for rock blasting, the pump features a large inspection opening for quick joint checks, a compact footprint for mobile or skid-mounted installations, and flexible drive and material options for consistent performance and uptime.

“Operators can inspect joints quickly and rely on precise pumping of shear-sensitive and abrasive emulsions,” said Magalie Levray, Global Business Development Manager Mining at SEEPEX. “This is particularly critical in rock blasting, where every borehole counts for productivity.” Industry Context

Rock blasting is essential for extracting hard rock and shaping safe excavation profiles in mining and construction. Accurate and consistent loading of explosive emulsions ensures controlled fragmentation, protects personnel, and maximizes productivity. Even minor deviations in pumping can cause delays or reduce product quality. BN pumps with SJA support routine maintenance and pre-operation checks by allowing fast verification of joint integrity, enabling more efficient operations.

Always Inspection Ready

Smart Joint Access is designed for inspection-friendly operations. The large inspection opening in the suction housing provides direct access to both joints, enabling rapid pre-operation checks while maintaining high operational reliability. Technicians can assess joint condition quickly, supporting continuous, reliable operation.

Key Features

  • Compact Footprint: Fits truck-mounted mobile units, skid-mounted systems, and factory installations.
  • Flexible Drive Options: Compact hydraulic drive or electric drive configurations.
  • Hydraulic Efficiency: Low-displacement design reduces oil requirements and supports low total cost of ownership.
  • Equal Wall Stator Design: Ensures high-pressure performance in a compact footprint.
  • Material Flexibility: Stainless steel or steel housings, chrome-plated rotors, and stators in NBR, EPDM, or FKM.

Operators benefit from shorter inspection cycles, reliable dosing, seamless integration, and fast delivery through framework agreements, helping to maintain uptime in critical rock blasting processes.

Applications – Optimized for Rock Blasting

BN pumps with SJA are designed for mining, tunneling, quarrying, civil works, dam construction, and other sectors requiring precise handling of abrasive or chemical media. They provide robust performance while enabling fast, reliable inspection and maintenance.With SJA, operators can quickly access both joints without disassembly, ensuring emulsions are transferred accurately and consistently. This reduces downtime, preserves product integrity, and supports uniform dosing across multiple bore holes.

With the Smart Joint Access inspection opening, operators can quickly access and assess the condition of both joints without disassembly, enabling immediate verification of pump readiness prior to blast hole loading. This allows operators to confirm that emulsions are transferred accurately and consistently, protecting personnel, minimizing product degradation, and maintaining uniform dosing across multiple bore holes.

The combination of equal wall stator design, compact integration, flexible drives, and progressive cavity pump technology ensures continuous, reliable operation even in space-limited, high-pressure environments.

From Inspection to Operation

A leading explosives provider implemented BN pumps with SJA in open pit and underground operations. By replacing legacy pumps, inspection cycles were significantly shortened, allowing crews to complete pre-operation checks and return mobile units to productive work faster. Direct joint access through SJA enabled immediate verification, consistent emulsion dosing, and reduced downtime caused by joint-related deviations.

“The inspection opening gives immediate confidence that each joint is secure before proceeding to bore holes,” said a site technician. “It allows us to act quickly, keeping blasting schedules on track.”

Framework agreements ensured rapid pump supply and minimal downtime, supporting multi-site operations across continents

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