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Concrete

Shift Towards Sustainable Construction

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Neeraj Akhoury, CEO India Holcim and Managing Director and CEO, Ambuja Cements, draws a clear path for sustainable shift towards blended cement, which would lead to lesser use of clinker, thereby enabling the industry to reach its decarbonisation targets.

In today’s world, cement stands shoulder to shoulder with core sectors like steel, energy and others as one of the key building blocks to nation building. With the current market size of $325 billion, the cement industry (in GDP terms) would rank among the top 50 industrialised nations in the world today. By 2028, this market is expected to grow to $460 billion. And when that happens, the global cement industry would have raced past another dozen or more countries in GDP terms.
Leaders in the cement sector across the world are not only aware of the opportunity this represents, but the weight of the responsibility that comes with it. Almost all major cement producers have committed themselves to a Net Zero future, an important decarbonisation movement that has also taken the larger industrial world by storm.

Planning Ahead
In the cement sector, we have identified every stage in the value chain as a potential target for decarbonisation. The execution of this change is happening within the bigger framework of ‘Circular Economy’. In simple terms, the principles of circular economy pushes manufacturers to treat every material (natural and processed) to be used in perpetuity. A key element in this system is the ability to cut down or reduce as one of the three Rs, along with reuse and recycling to achieve long term sustainability.
For the cement sector, one of the focus areas has been reduction of the use of clinkers in the manufacturing process, or what in industry parlance is called ‘clinker factor’. Clinker is an intermediary material used in the production of cement.
The reduction of clinker factor is achieved by replacing it with alternative blending materials like pozzolana, slag or fly ash (industrial waste) to produce blended cements. This reduces the carbon intensity of the cement—a primary lever for reduction of carbon emissions.
So, the more we shift towards blended cement, the lesser will be the use of clinker and thus move the cement industry closer to its ultimate decarbonisation targets.
The growing demand for blended cement in a country like India is particularly very effective in combating climate change. India is today the second-largest cement producer and consumer, with the share of blended cement of around 75 per cent of our total production mix. However, India’s per capita cement consumption at around 235 kg is less than half of the global average (520 kg).

Surging Demand
The economic growth we are foreseeing over the next few years and decades including the target of becoming a $5 trillion GDP will push the demand for cement to much higher levels. The surge in demand for cement can be environmentally sustained only by our efforts to push for wider use of blended and green cement. From the manufacturers point of view such a shift is already gaining a lot of momentum through more investment in R&D-led innovation to improve products and processes and in no small measure a strong and consistent consumer-focussed advocacy.
As one of the leading markets for cement in the world, this is an historic opportunity for India to establish its leadership in the true sense of the word.

About the author:
Neeraj Akhoury, CEO, Holcim India, and Managing Director and CEO of Ambuja Cements
comes with over 28 years of experience in steel and cement industries. He has a degree in Economics and MBA from the University of Liverpool, and General Management from XLRI, Jamshedpur. He is also an alumnus of Harvard Business School. He is on the board of governors at National Council for Cement and Building Materials (NCCBM), and he also serves as Vice President of the Cement Manufacturers Association of India.

Concrete

Ultra Concrete Age

Prof. A. S. Khanna (Retd., IIT Bombay) on how Ultra-high performance concrete (UHPC) improves strength, durability and lifecycle performance.

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The need of present time is stronger buildings, industrial or common utility buildings, such as Malls, Railway stations, hospitals, offices, bridges etc. For this, there is need of long durable, tough and stable concrete, which could stand under normal and seismic conditions. Tough railway bridges are required for bullet trains to pass without any damage. Railway tunnels, sea-links, coastal roads, bridges and multistorey buildings, are the need of the hour. The question comes, is the normal cement called OPC is sufficient to take care of such requirements or better combination of cements and sand mixtures is required?
Introduction
A good stable building structure can be made with a good quality of cement+sand+water system. Its quality can be enhanced by keeping the density of admixture higher (varies from 30 in normal buildings to bridges etc to 80). Further enhancement in the properties of various cements admixtures is made by adding several additives which give additional strength, waterproofing, flexibility etc. These are called construction chemicals…

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Concrete

NCB Signs MoU With Cement Manufacturer To Boost Construction Skills

Partnership to deliver nationwide training and certification

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The National Council for Cement and Building Materials (NCB) has signed a memorandum of understanding with a leading cement manufacturer to strengthen skill development and capacity building in the construction sector. The agreement was formalised at NCB premises in Ballabgarh and was signed by the Director General of NCB, Dr L. P. Singh, and the head of technical services at UltraTech Cement Limited, Er Rahul Goel. The collaboration seeks to bring institutional resources and industry expertise into a structured national training effort.

The partnership will deliver structured training and certification programmes across the country aimed at enhancing the capabilities of civil engineers, ready?mix concrete (RMC) professionals, contractors, construction workers and masons. Programme curricula will cover material quality testing, concrete mix proportioning, durability assessment and sustainable construction practices to support improved construction outcomes. Emphasis is to be placed on standardised assessment and certification to raise practice levels across diverse construction roles.

Practical learning elements will include workshops, site demonstrations, technical seminars and exposure visits to plants and RMC facilities to strengthen applied skills and on?site decision making. The Director General indicated confidence that a large number of professionals and workers would be trained over the next three to five years under the initiative. The partnership is designed to complement flagship government schemes such as the Skill India Mission and to align training outputs with national infrastructure priorities.

By combining the council’s technical mandate with industry experience, the initiative aims to develop a more skilled and quality?conscious workforce capable of meeting rising demand in infrastructure and housing. NCB will continue to coordinate programme delivery and quality assurance while industry partners provide practical exposure and technical inputs. The collaboration is expected to support long?term capacity building and more sustainable construction practices nationwide.

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Concrete

JSW Cement Commissions Nagaur Plant, Enters North India

New Rajasthan unit boosts capacity to 24.1 MTPA and expands reach

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JSW Cement has strengthened its national presence by commencing production at its greenfield integrated cement plant in Nagaur, Rajasthan, marking its entry into the north Indian market.
With this commissioning, the company’s installed grinding capacity has increased to 24.1 MTPA, while total clinker capacity, including its joint venture operations, stands at 9.74 MTPA.
The Nagaur facility comprises a 3.30 MTPA clinkerisation unit and a 2.50 MTPA cement grinding unit, with an additional 1.00 MTPA grinding capacity currently under development. Strategically located, the plant is positioned to serve high-growth markets across Rajasthan, Haryana, Punjab and the NCR.
The project has been funded through a mix of equity and long-term debt, with Rs 800 crore allocated from IPO proceeds towards part-financing the unit.
Parth Jindal, Managing Director, JSW Cement, stated that the commissioning marks a key milestone in the company’s ambition to become a pan-India player. He added that the project was completed within 21 months and positions the company to achieve its targeted capacity of 41.85 MTPA by FY29.
Nilesh Narwekar, CEO, JSW Cement, highlighted that the expansion aligns with the company’s strategy to tap into rapidly growing northern markets driven by infrastructure development. He noted that the company remains focused on delivering high-quality, eco-friendly cement solutions while progressing towards its long-term capacity goal of 60 MTPA.
The Nagaur plant has been designed with sustainability features, including co-processing of alternative fuels and a 7 km overland belt conveyor for limestone transport to reduce road emissions. The facility will also incorporate a 16 MW Waste Heat Recovery System to improve energy efficiency and lower its carbon footprint.
JSW Cement, part of the JSW Group, operates across the building materials value chain and currently has eight plants across India, along with a clinker unit in the UAE through its joint venture.

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