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Concrete: A Highly Sustainable Building Material

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Concrete as a material can be viewed in different ways. Here a builder and developer explains how versitle the material is and its superiority.

With the term ?concrete jungle? having become to popular and widely used, it is easy to overlook that this building material has been around for so long for very good reasons. Also, that it has some excellent attributes which make it very important in today?s context.

Yes, it is easy to produce and use, but the fact is that concrete is an eminently environmentally friendly building material during the entire span of its life cycle, beginning from its production as a raw material right until it is demolished. This renders it the perfect and obvious building option for the construction of sustainable homes.

The cement utilized in concrete is sourced from limestone, which is an abundantly available mineral that will literally never deplete. However, one can also manufacture concrete from materials such as slag cement and fly ash, both of which are generated by industries like steel mills and power plants as waste byproducts. From the point of recycling of existing resources, concrete is therefore a real boon to the planet.

Concrete is also highly durable, and is used in erecting buildings which are not subject to rust, do not burn or otherwise degrade. In fact, buildings built with concrete have twice or even thrice the life- span of buildings erected with many other construction material. The life-spans for concrete building products can be double or triple those of other common building materials.

What is equally important from a sustainability perspective is that the use of concrete in forming the foundation, floors and walls of a building renders it extremely energy-efficient. One of the benefits of this building material is its ability to absorb and retain heat. In other words, people who live in homes built of concrete save significantly on both cooling and heating bills. In a concrete building, one can install air conditioners of lower capacity, resulting in significant electricity savings.

Also, concrete reduces the incidence of processes that result in urban heat islands. When concrete, which is inherently light in colour, is used to build pavements and roofs, the end result is that less heat is absorbed and more incoming solar radiation is deflected. Finally, concrete as a building material results in the least waste of raw building materials, as it can be manufactured and used in the actual quantities required to build a building or other project. Once a building or structure built of concrete has completed its life-cycle or fulfilled the purpose for which it was erected, the concrete can be recycled into aggregate which can then be used to lay concrete pavements or provide an underlying base for roads.

Authored by Kishor Pate, Chairman & Managing Director of Amit Enterprises Housing Ltd., a real estate development firm in pune.

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Concrete

Cement industry sees record growth amid booming construction demand

Glimpses from the 13th Cement Expo in Hyderabad.

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“There’s no waste in India; everything is wealth,” was the thought-provoking idea that came from Dr Mohapatra, DG, NCCBM, as he shared his views on ‘Circular Economy and Sustainability’ at the recently concluded 8th Indian Cement Review Conference. The questions he raised and the ideas he presented were enriched with his decades of experience of working on research, development and analysis of alternative raw materials and renewable fuel for the cement industry. He highlighted the struggles in manufacturing blended cement and the opportunities that are available for its use. Finally, he suggested ways to ensure that each manufacturing plant falls within the gamut of a circular economy.

On his part Dr Sriharsha Reddy, Director, IMT Hyderabad, elaborating on ‘ESG – Green Financing: A new opportunity for the cement industry’, brought to light a number of important issues pertaining to fund procurement through traditional methods and the challenges therein.

Highlighting his views on carbon capture and its benefits for the cement manufacturers, Saurabh Palsania, Executive Director and Group Commercial Head, Dalmia Cement (Bharat), underscored the need to implement innovative technology and most importantly a proper strategy, in order to revolutionise the efforts towards net zero emissions. “Carbon capture, utilisation and storage (CCUS) is an investment-intensive process that also requires a commitment of time and labour. Keeping all these factors in mind, cement companies need to chart out an effective strategy to incorporate CCUS into their eco systems, ensure purity of the captured carbon and channel it towards predetermined activities for its optimum utility,” he said.


Pratap Padode, Founder & President, FIRST Construction Council,
summarised the challenges faced by the Indian cement industry as well as the growth opportunities it presented for manufacturers in terms of technological innovation and capacity building. He supported his opinions with statistical findings and his in-depth knowledge about the Indian cement and construction industries.

Several discussions from the event highlighted several critical aspects of the cement industry.

ESG – Green Financing: A new opportunity for the cement industry

The cement industry has made progress in reducing energy consumption and power usage, but the challenge now lies in reducing carbon emissions. With breakthrough carbon capture technologies and solar calcination of limestone, the industry can work towards achieving zero CO2 emissions. However, the economic value of carbon capture needs to be explored, with government support through carbon labelling, trading, and green funds. Other solutions such as non-contact grinding and heat recovery from kilns can also be explored to bring emissions to zero. The industry can achieve sustainability and low carbon footprint with digital transformation and well-planned processes. To finance green initiatives, traditional lending institutions such as banks are now considering the economic value of eco-friendly practices. However, long-term loans remain a challenge, and other lending institutions such as venture capitalists and government grants need to be explored.

Demystifying digitalisation and maximising the value chain impact

Digitalisation is crucial in optimising all stages of cement production. Industry 4.0 has provided tools that help determine the desired product quality, which is vital in meeting customer demands. As the importance of ESG continues to grow, digitalisation can help improve processes and reduce environmental impact. Transparency is also key, and a cloud-based platform can facilitate this. Automation at the plant level is vital for both efficiency and safety. However, it is important to remember that profitability is also essential for sustainability. Therefore, implementing digital tools and automation must be done with a focus on achieving profitability without compromising on sustainability.

Innovative supply chain strategies in the cement industry

Innovative supply chain strategies are crucial for the cement industry to remain competitive, with logistics and transportation being at the forefront. Industry experts discussed that the key to cost efficiency lies in innovation in first and last mile connectivity. However, logistics should not be viewed as merely a commercial function, but rather as a technology function. By investing in technology, cement manufacturers can drive the supply chain in a much better way, enabling them to evaluate processes from a revenue angle rather than just cost.

Industry experts also agreed that logistics is the only differentiator a cement company can have today, rather than cost or quality. As such, it is essential for cement manufacturers to explore non-renewable sources of energy to address the energy demand for distribution. Automation is also considered a key element for future logistics solutions. With these innovative strategies in place, the cement industry can increase efficiency and sustainability, which in turn can positively impact the bottom line.
On his part, Gaurav Gautam, Head of Sales, Beumer Group, highlighted the innovations in material handling systems that the is undertaking in order to make the movement of finished products smoother along the supply chain. The company specialises in tailor-made intralogistics solutions that help maximise productivity of cement companies.

Truly, the 8th Indian Cement Review Conference brought the industry together in a informative discussion on thought-provoking ideas and suggestions. The presentation weremade by Jayesh Patil, Assistant Manager, Flow Aids, Martin Engineering; Nischal Basavaraj, Regional Head – South, Liugong India; Sasi M Kumar, Business Development Manager – Cement, ExxonMobil; and S Chakravarti, Managing Director, Ecodea Projects and Control.

The conference was held alongside the 13th Cement Expo and Indian Cement Review Awards 2023. Partners supporting the event included: Presenting Partner: ExxonMobil Lubricants; Gold Sponsor: JK Cement and PhillipCapital India; Silver Sponsor: LiuGong India; Associate Sponsor: Humboldt Wedag India; Presentation Partners: Martin Engineering Company India, Beumer India, and Ecodea Projects & Control; Logo Sponsor: Stotz Gears; and Exhibiting Partners: Toshniwal Industries; TIDC (Murugappa Group), and Ringfeder Power Transmission India.

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Concrete

Solutions to protect concrete against monsoon

Concrete patching compounds for repairing concrete window ledges.

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As the monsoon season rapidly approaches in India, the urgency to address potential damage to the commonly used building material – concrete –intensifies. Weathering and loading can cause cracks and deterioration, impacting both the structure’s integrity and aesthetics and leading to water penetration and reinforcement corrosion. To ensure durability and prevent further damage, it is essential to promptly repair any concrete cracks.

Several structures face a common problem during monsoon season – holes created by water penetration or impact in concrete window sills. These not only affect the window’s appearance and functionality but also pose a safety hazard. Fortunately, various concrete repair compounds are available in India to fill such holes and restore the window sill. Don’t wait until it’s too late –CW researches some of the concrete repair compounds that could help protect concrete structures from monsoon damage:

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Concrete

Heidelberg Materials secures SBTi validation

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The Science-Based Targets Initiative (SBTi) has validated Heidelberg Materials’ new 2030 CO2 reduction targets. The targets have a base year of 2020 and conform to a 1.5°C climate change framework. Per tonne of cementitious material, the producer is now committed to reducing its Scope 1 CO2 emissions by 24 per cent, its Scope 2 CO2 emissions by 65 per cent and its Scope 3 emissions by 25 per cent.

Images Source: Google Images

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