Displaying items by tag: Sustainability

Taiwan: Taiwan Cement Corporation (TCC) and 100 construction firms have together launched the Low Carbon Construction Pioneer Alliance. CNA News has reported that the founding members eliminated 146,000t of CO₂ emissions altogether through their use of reduced-CO₂ building materials since November 2024. This includes despatches of 800,000m³ of Portland limestone cement (PLC) concrete by TCC, with 2.5Mm³ in cumulative orders to date. TCC first launched its PLC in October 2023, touting an emissions reduction of 15% compared to ordinary Portland cement (OPC). It since enlarged the net reduction to 24% through production modifications.

Taiwan Cement chair Zhang Anping said "TCC took the initiative to align with the Global Cement and Concrete Association and released the lowest-carbon PLC concrete in Taiwan. The CO₂ reduction is far greater than the 53% as defined by the government.”

On 6 November 2024, Donald Trump appeared before followers in Florida, US, to declare victory in the 47th US presidential election. A sea of red baseball caps reflected the promise of the former president, now once again president-elect, to Make America Great Again. What Trump’s triumph means for the cement industry is not so straightforward. One lesson of President Trump’s 2017 – 2021 tenure as 45th president is that a Trump presidency comes with winners and losers.

Alongside the international heads of state posting their congratulations to Trump via social media was the Portland Cement Association (PCA), which represents US cement producers. In a post to LinkedIn, it took the chance to set out its priorities for the upcoming presidency, set to commence on 20 January 2025. These include collaborating on ‘market‐based initiatives’ to further reduce US cement’s CO₂ emissions, addressing ‘regulatory burdens’ that currently hinder the uptake of alternative fuels (AF) and ensuring favourable policies and funding for the use of alternative cements under federal transport programmes, which are up for renewal in 2026, as well as collaborating on carbon capture, utilisation and storage.

The post was suitably diplomatic for an organisation that will have to work with the incoming administration for the next four years. Reading the policy priorities against some of Trump’s campaign promises, however, they may be more pointed. As part of his plan to stimulate economic growth, Trump has proposed an unspecified reduction of the ‘regulatory burden’ of environmental standards. He also purports to want to replace renewables with increased use of fossil fuels – in direct opposition to the PCA’s goal to slash the US cement industry’s coal and petcoke reliance from 60% to 10% by 2050. The PCA’s stance is not merely ideological: its roadmap is founded on the legally-binding Paris Agreement on climate change mitigation. Trump, who considers the Paris Agreement a ‘disaster,’ has the stated aim of withdrawing the US from the treaty – for a second time!

The PCA included a positive note that “We can all agree that the ultimate goal of our industry and the government is to best serve the American people.” In case there were any doubt as to what it feels best serves those people, it concluded that it will work with all federal officials to help communities in the US to build ‘a more resilient, sustainable’ country.

Producers themselves, in the US and many other markets, had been finalising first-half or nine-month financial results when the Trump news broke. Now came half-anticipated strategy discussions – and a surprise: in market after market, trading in cement stocks opened on the up. Ireland-based CRH’s share price spiked by 15%, before settling on a rise of 6% day-on-day. Mexico-based Cemex’s rose by 7% and Switzerland-based Holcim’s by 5%. Investors, clearly, glimpsed opportunity in uncertainty for these US-involved operators.

Trump’s campaign successfully positioned him as the disruptive outsider, despite being the known (or, at least, known-to-be-unpredictable) quantity of the two candidates. His promise to Americans was increased affordability; to corporations, deregulation. Either way, he stands to overhaul the past four years’ policy on the economy. All of this may keep Wall Street high-ballers placing their bets on Cemex or CRH, or on Holcim North America after it eventually joins them on the New York Stock Exchange. The prospect of more money in homebuyers’ pockets is attractive, especially to allied sectors like property development, where Trump himself worked for over 40 years. The cement industry, meanwhile, will be taking a hard look at what the Trump proposition might mean for its market.

US Geological Survey (USGS) data tracks a favourable market trend under the present Biden Administration – to date – for a US cement industry that has also grown in production terms. Consumption was 120Mt in 2023, up by 14% over the three-year-period from 2020, while production was 91Mt, up by 4% over the same period. President Biden has signed into law two major pieces of legislation – the Inflation Reduction Act and Infrastructure Investment and Jobs Act – with a combined value of US$1.94tn in additional public spending, to President Trump’s none. However, the Republican president previously proposed investing an additional US$200bn in 2018.

Trump voters may have perused the USGS’ most recent monthly cement figures, for July 2024, before casting their votes. The figures recorded a 5.2% year-on-year decline in total cement shipments in the year-to-date, to 58.6Mt. Both Eagle Materials and Italy-based Buzzi noted a recent lack of growth in US sales volumes in their latest financial results. Another possibly alarming trend for the industry – and anyone with a protectionist mindset - is the growth of imports, which rose from 14.8Mt in 2019 to 26Mt in 2023.

A defining feature of Trump’s original presidency, alongside Covid-19 lockdown, was his still-ongoing trade wars. We can expect Trump to resume his roll-out of new tariffs as soon as he can. This might include cement plant equipment produced in other jurisdictions, such as the EU. Compared to the roster of goods he previously denied entry to the US, however, 26Mt/yr of cement will be less easy to wrangle with in a country with a domestic shortfall of 29Mt/yr.

Whatever happens in politics, the US cement sector remains very strong, with historied local ownership and some of the most innovative plants in the industry globally. Global players continue to seek to maximise their US-facing presence, as evidenced by Brazil-based Votorantim Cimentos’ contemplation of an initial public offering (IPO) for Votorantim Cimentos North America, announced on 7 November 2024. For the industry, the day-to-day grind – and pyroprocess – goes on.

After all, Trump did not enact many of his more disruptive proposals, such as building a Mexican border wall, after his win in 2016. See Global Cement’s analysis of that proposal here. But even this record is an unreliable guide for what to expect in 2025 – 2029. Not only did Trump himself win the popular mandate this time around, but his allies also gained majorities in the House of Representatives and Senate, comprising the US legislature. This betokens a different pace and scale of possible changes.

In 10 weeks’ time, the US cement sector will be lobbying an entirely new regime. Now is the time for it to prepare whatever arguments will appeal to incoming lawmakers to allow it make the best of such opportunities as may be available.

Brazil: Votorantim Cimentos has reported that its net profit surged by 24% in the third quarter of 2024 compared to the same period of 2024, to reach US$179m. Its net revenue increased by 6% year-on-year to reach US$1.33bn.

However, when excluding currency fluctuations, revenue decreased by 1%. This highlights the significant impact of foreign exchange rates on Votorantim's global operations. Adjusted earnings before interest, tax, depreciation and amortisation (EBITDA) rose by 20% to US386m. Cement sales volume increased by 3% to 10Mt during the quarter.

The company said that these figures indicate resilient demand across Votorantim's markets, despite challenging economic conditions in some regions. The company's diversified geographical presence has helped balance market fluctuations.

In the sustainability arena, Votorantim Cimentos also says that it has made significant progress. The company reduced its specific embodied CO₂ emissions by 4% to 556kg/t of cement in 2023. It has also increased its alternative fuel thermal substitution rate (TSR) from 26.5% in 2022 to 30.9% in 2023.

Portugal: Cimpor has presented its decarbonisation plan during a visit from the Portuguese Minister of Economy, Pedro Reis, to its Alhandra cement plant. The plan involves a €360m investment across Cimpor’s Alhandra, Souselas and Loulé plants to achieve carbon neutrality by 2050. Current projects at the Alhandra plant include a €110m investment in alternative fuels and two €35m investments in a replacement mill and new clinker cooler. The company estimates a CO₂ emissions reduction of 190,000t/yr and a 16GWh energy saving. Similar initiatives are underway at the Souselas plant, such as the conversion of a kiln to produce calcined clays, which could reportedly cut 70,000t/yr of CO₂.

Cevat Mert, CEO of Cimpor for Portugal and Cape Verde, said “We are committed to investing in Portugal for the environment, sustainability and technology, and our projects are going at full speed. I would like to emphasise that the government´s infrastructure investments, support and incentives, particularly for the environment and sustainability, need to gain further momentum, and we trust in the minister’s support on prioritising this matter. I am confident that together we will continue to build a cement sector that Portugal can be proud of.”

UK: Heidelberg Materials UK has launched evoBuild, a global brand for low-carbon and circular cement, ready-mixed concrete, aggregates and asphalt products, in line with its parent company's sustainability strategy. According to the company, EvoBuild products either reduce CO₂ emissions by at least 30% or incorporate at least 30% recycled content.

This launch complements evoZero, the ‘world's first carbon-captured net-zero cement’, launched by Heidelberg Materials in November 2023. All eligible products from Heidelberg Materials UK will be integrated into the evoBuild portfolio ‘over the coming years.’

Canada: Climate technology company CarbonCure Technologies has announced that it has ‘saved’ over 500,000t of CO₂ across 7.5m truckloads of concrete. CarbonCure uses a technology that injects captured CO₂ into fresh concrete, which is mineralised and permanently stored, and which enables concrete producers to reduce cement usage while maintaining strength. The solution integrates into existing concrete plant operations, allowing for both environmental benefits via a reduced CO₂ footprint and cost savings through reduced cement consumption, according to the company. The company also claims that for every 1t of CO₂ that is mineralised in ready mix concrete, another 50t of CO₂ is ‘avoided’ by reducing emissions from cement adjustments.

CEO of CarbonCure Technologies Rob Niven said “This milestone reflects the strong sustainability leadership of CarbonCure’s innovative concrete producer partners. Together, we are proving that reducing the carbon footprint of concrete is not just a goal for the future — it can happen, and it is happening, today at scale.”

India: UltraTech Cement has entered a collaboration agreement with the Institute for Carbon Management (ICM) at the University of California (UCLA) to develop new technology that aims to reduce carbon dioxide emissions from cement production. The partnership will see the construction of a demonstration plant at one of UltraTech's integrated cement plants. Further details on the technology are available in Global Cement’s news story from 15 October 2024.

Pakistan: Lucky Cement has commissioned a 28.8MW captive wind power project at its Karachi plant, which started operations on 22 October 2024. This reportedly makes Lucky Cement the first company in Pakistan to launch a renewable energy project of this scale, according to The News International. Lucky Cement now generates 55% of its total power consumption from renewable sources.

One unusual thing about coverage of cement in the media is the way that discussions often centre precisely on its absence – that is, on alternatives to cement. These alternatives boast unique chemistries and performance characteristics, but are all produced without Portland cement clinker. They are generally called ‘alternative cements,’ perhaps because ‘cement-free cement’ does not have such a commercially viable ring to it. This contradictory tendency reached a new high in the past week, with developments in alternative cement across Asia, Europe, the Middle East and North America. Together, they hint at a more diverse future for the ‘cement’ industry than the one we know today.

Asia

In Indonesia, Suvo Strategic Minerals has concluded tests with Makassar State University of a novel nickel-slag-based cement. Huadi Nickel-Alloy Indonesia supplied raw materials, and tests showed a seven-day compressive strength of 37.5MPa. Suvo Strategic Minerals says that a partnership with Huadi Nickel-Alloy Indonesia for commercial production is a likely next step.

Europe

Cement producer Mannok and minerals company Boliden partnered with the South Eastern Applied Materials (SEAM) research centre in Ireland to launch a project to develop supplementary cementitious materials (SCMs) from shale on 7 October 2024. The project will additionally investigate CO₂-curing of cement paste backfill for use in mines. Irish state-owned global commerce agency Enterprise Ireland has contributed €700,000 in funding.

UK-based SCM developer Karbonite expects to launch trial production of its olivine-based SCM with a concrete company in 2025. The start-up launched Karbonite Group Holding BV, with offices in the Netherlands, to facilitate this new phase. Karbonite’s SCM is activated at 750 – 850°C and sequesters CO₂ in the activation process, resulting in over 56% lower CO₂ emissions than ordinary Portland cement (OPC). Managing director Rajeev Sood told Global Cement that talks are already underway for subsequent expansions into the UAE and India.

Back in the UK, contractor John Sisk & Son has received €597,000 from national innovation agency Innovate UK. John Sisk & Son is testing fellow Ireland-based company Ecocem’s <25% clinker cement technology in concrete for use in its on-going construction of the Wembley Park mixed development in London.

At the same time, Innovate UK granted a further €3.23m to other companies for concrete decarbonisation. Recipients included a calcined clay being developed by Cemcor, an SCM being developed from electric arc furnace byproducts by Cocoon, a geopolymer cement technology being developed by EFC Green Concrete Technology UK and an initiative to develop alternative cement from recycled concrete fines at the Materials Processing Institute in Middlesbrough. Also included was the Skanska Costain Strabag joint venture, which is working on the London stretch of the upcoming HS2 railway. The joint venture, along with partners including cement producer Tarmac and construction chemicals company Sika UK, will test low-kaolinite London clay as a raw material with which to produce calcined clay as a cement substitute in concrete structures in HS2’s rail tunnels.

Middle East

Talks are underway between UK-based calcined clay producer Next Generation SCM and City Cement subsidiary Nizak Mining Company over the possible launch of a joint venture in Riyadh, Saudi Arabia. The joint venture would build a 350,000t/yr reduced-CO₂ concrete plant, which would use alternative cement based on Next Generation SCM’s calcined clay.

North America

Texas-based SCM developer Solidia Technologies recently patented its carbonatable calcium silicate-based alternative cement, which sequesters CO₂ as it cures.

Meanwhile, C-Crete Technologies made its first commercial pour of its granite-based cement-free concrete in New York, US. C-Crete Technologies says that the product offers cost and performance parity with conventional cement, with net zero CO₂ emissions. Its raw material is globally more abundant than the limestone used as a raw material for clinker. Other abundantly available feedstocks successfully deployed within C-Crete Technologies’ repertoire include basalt and zeolite.

Across New York State, in Binghamton, KLAW Industries has succeeded in replacing 20% of concrete’s cement content with its powdered glass-based SCM, Pantheon. KLAW Industries has delivered samples to local municipalities and the New York State Department of Transportation. Its success expands the discussion of possible circular cement ingredients from the industrial sphere into post-consumer resources.

In Calgary, Canada, a novel SCM has drawn attention from one of the major cement incumbents: Germany-based Heidelberg Materials. It invested in local construction and demolition materials (CDM)-based SCM developer EnviCore on 9 October 2024. The companies plan to build a pilot plant at an existing Heidelberg Materials CDM recycling centre.

Conclusion

Alternative cement developers are still finding the words to talk about their products. They may be more than ‘supplementary’ up to the point of entirely supplanting 100% of clinker. Product webpages offer ‘hydraulic binder,’ ‘pozzolan’ and even ‘cement.’ As alternative ‘cements’ are developed, they build on the work of pioneers like Joseph Aspdin and Louis Vicat. Start-ups and their backers are now reaching commercial offerings, on a similar-but-different footing to cement itself. None of these novel materials positions itself as the sole, last-minute ‘super sub’ in the construction sector’s confrontation with climate change. Rather, they are a package of solutions which can combine into a net zero-emissions heavy building materials offering, hopefully before 2050.

Related to this is the need for ‘technology neutral’ standards, as championed this week by the Alliance for Low-Carbon Cement and Concrete (ALCCC), along with 23 other European industry associations, civil society organisations and think tanks. The term may sound new, but the concept is critical to the eventual uptake of alternative cements: standards, the ALCCC says, should be purely performance-based. They ought not attempt to define what technology, for example cement clinker, makes a suitable building material. According to the ALCCC, Europe’s building materials standards are not technology neutral, but instead ‘gatekeep’ market access, to the benefit of conventional cement and the exclusion of ‘proven and scalable low-carbon products.’

At the same time, cement itself is changing. Market research from USD Analytics showed an anticipated 5% composite annual growth rate in blended cement sales between 2024 and 2032, more than doubling throughout the period from US$253bn to US$369bn. If you can’t beat it, blend with it!

For a further discussion of alternative cement and binders in Europe, see Global Cement’s interview with ALCCC co-ordinator Joren Verschaeve in the forthcoming November issue of Global Cement Magazine on 17 October 2024.

Canada: Sustainable materials startup EnviCore has raised US$3m in its seed funding round led by CSN Inova Ventures (the corporate venture capital arm of Brazil’s Companhia Siderúrgica Nacional), Heidelberg Materials and others. The funding will scale up Envicore’s production of low-carbon supplementary cementitious materials (SCMs), like mining tailings, slag, shale and glass. The company’s technology reportedly reduces the carbon footprint of cement production by up to 30%, using recycled mineral feedstock, with the SCMs replacing up to 35% of Portland cement in concrete. Proceeds will expand EnviCore's production capacity and support new business development, operations and research and development efforts. Heidelberg Materials, together with EnviCore, will conduct a feasibility study for a pilot SCM production facility close to one of Heidelberg Materials’ recycling hubs.

CEO and co-founder Shahrukh Shamim said "This investment marks a pivotal moment in our journey to commercialise a game-changing technology in the cement industry. The support from CSN, Heidelberg Materials and other investors will allow us to scale up quickly and meet the growing demand for greener building solutions."