Displaying items by tag: low carbon cement
Fortera opens new ‘green’ cement plant in California
15 April 2024US: Fortera has inaugurated its first ‘green’ cement production facility in North America, located in Redding, California. The 2787m2 ReCarb plant operates alongside the existing CalPortland cement plant, capturing CO₂ emissions and mineralising the CO₂ into calcium carbonate for production of the company’s low-carbon ReAct cement. The process reportedly reduces emissions by 70% compared to traditional methods, yielding a tonne of ‘green’ cement for every tonne of limestone input. The facility aims to capture 6600t/yr of CO₂ and to produce 15,000t/yr of ‘green’ cement.
According to Fortera CEO Ryan Gilliam, Fortera currently has 20 upcoming projects with various cement producers, which will cost US$150m each. This includes a plant in the Midwest that will be a 25-fold capacity increase compared to the Redding plant, producing 400,000t/yr of ‘green’ cement.
TCMA chair sets goal for net zero 2050
08 April 2024Thailand: Chair of the Thai Cement Manufacturers Association (TCMA), Dr Chana Poomee, announced the company’s new strategy, called 'TCMA Synergising the Actions toward Net Zero 2050'. This strategy aims to drive the cement industry towards clean energy transition, connect with global green funds and address climate change.
The vision involves four key missions for 2024-2026, including developing low-carbon cement, enhancing resource-efficient mining practices, building an integrated waste-to-value ecosystem, and transitioning to clean energy.
The TCMA also aims to reduce its CO₂ emissions by 6.9Mt/yr by 2030. Collaborations with various partners, including the Thailand Fellowship Cement Manufacturers and the Thai Bankers Association, are planned to leverage innovation and government policy support.
Ecocem launches low-carbon ACT cement range
27 March 2024France: Ecocem has launched a new low-carbon advanced cement technology (ACT) cement, aiming for widespread adoption in European construction projects. The ACT range promises a clinker concentration of 20%, lower than the current norm of 35% minimum.
Jean-Christophe Trassard, Director, Marketing of Sustainable Innovation, said "We achieve competitive rates by controlling granularity, the fineness of grinding and admixtures. We have also greatly developed our thinking on the addition of additives in our formulations, which required more than fifteen years of R&D and the filing of six patents."
This product contains locally sourced additives, with the capability to adapt mixes to regional availability. The ACT cement is expected to reduce water usage by one-third compared to conventional concrete. An ACT-based concrete reportedly emits 198kg CO₂/t, a substantial reduction from the 614kg CO₂/t for standard concrete in France.
Gaining market entry for ACT required European technical evaluation and European assessment document certification, currently pending in the EU Official Journal. Trassard added, "As we are dealing with clinker rates below the standards, we had to go through this certification, which gives us a very good passport for the European markets. However, local administrative variations will have to be carried out subsequently."
In France, Ecocem has already applied for ATEX certification to facilitate deployment of the ACT range, expected later in 2024. Ecocem aims to include the ACT range in standard norms by 2026.
Saint-Gobain invests in low-carbon cement technologies
15 March 2024France: Saint-Gobain is intensifying its commitment to low-carbon cement and concrete additives. The group has invested in Fortera, a start-up developing a process for low-carbon cement production. Fortera's ReCarb process reduces CO2 emissions by 70% in existing cement plants, contributing significantly to the goal of net-zero carbon cement production, especially when combined with renewable energy. Additionally, Saint-Gobain supports Ecocem, a leading company in low-carbon cement technologies in Europe, as a shareholder. Ecocem's ACT technology showcases a 70% reduction in carbon footprint compared to the average CEM II cement used in Europe.
Neo-Eco launches low-carbon clay binder
14 March 2024France: Neo-Eco has developed a low-carbon cement binder from clay excavated during the Grand Paris Express project. The process, developed at IMT Nord Europe, involves flash-calcination at about 700°C, allowing it to replace part of the clinker and emit approximately five times less CO2 than traditional methods. Neo-Eco's director, Christophe Deboffe, said that this new ingredient could constitute 30% of cement, maintaining the cost similar to traditional binders.
To commercialise this breakthrough, Neo-Eco established Neocem, a subsidiary based near Lille. Neocem has raised €23m to build a production plant in Saint-Maximin, Oise. Strategically located near waterways and Île-de-France, the plant will directly receive excavated materials from the Société du Grand Paris.
Starting in 2025, the facility will produce 100,000t/yr of flash-calcined clay, with potential to double its capacity in the future. Deboffe sees this as just the beginning, planning to establish more plants across France and Europe to meet the cement and ready-mix concrete industry's demand.
The clay supply is estimated to exceed 100Mt, ensuring a sustainable and ample source for the binder.
The facility is supported by the French government's ‘Première usine’ initiative under the France 2030 investment plan, with funding from investors like Bpifrance and CB Green. CB Green, based in Calais, is also developing a limestone filler production plant in Dunkerque with Ecocem, pointing to a future where cement could be composed equally of flash-calcined clay, limestone filler, and clinker. Bottom of Form
Germany: Heidelberg Materials will stop producing clinker at its 700,000t/yr Hanover cement plant in Lower Saxony later in 2024, and transition the plant to grinding-only. The producer took the decision following a ‘significant drop’ in its cement sales, amid local low construction activity and a market shift towards lower-cement materials. Nonetheless, it intend to raise its capacity utilisation at its 1Mt/yr Ennigerloh, 900,000t/yr Geseke and 400,000t/yr Paderborn cement plants in neighbouring North Rhine-Westphalia. These will supply clinker to the Hanover grinding plant in future. Heidelberg Materials says that the plant's strategic location will ensure its continued importance in regional cement supply. Part of the 120-strong workforce at the Hanover plant will remain at the new grinding plant. The company will collaborate with the works council to find ‘acceptable solutions’ for the remainder of the team, possibly including intra-group transfers to other divisions and locations.
The Calix consortium’s on-going LEILAC 2 carbon capture project will now move from the Hanover plant to another Heidelberg Materials plant. Australia-based Calix is collaborating with Heidelberg Materials to identify a suitable new site as quickly as possible.
CemVision to supply low carbon cement to LKAB
26 December 2023Sweden: CemVision has announced its first commercial agreement to sell its low carbon cement. Pilot deliveries are scheduled to begin in March 2024 to LKAB. Further commercial agreements are planned over the next four years. CemVision produces its Re-ment product using industrial residual products such as those from the steel and mining sectors instead of limestone.
Anders Lundgren, Chief Sustainability Officer for Business Area Special Products at LKAB, said “The letter of intent include the pilot deliveries and trial use of CemVision’s products in our concrete production, and intent to source from their future full-scale production, which presents a potential to further enhance the circularity and to decarbonise our supply of cement and addressing our emissions in the supply chain.”
Holcim Azerbaijan to build cement terminal in Jabrayil in 2024
19 December 2023Azerbaijan: Holcim Azerbaijan plans to build a 2000t-capacity cement terminal in the Araz Valley Economic Zone in Jabrayil. AzerNews has reported that Holcim Azerbaijan will build the terminal in phases, commencing in 2024. The producer’s offering in the local market includes its ECOPlanet Inshaatchi and ECOPlanet Optimal reduced-CO2 cements. In a later phase, it will install a dry adhesive and ready-mix concrete batching plant at the facility. Planned investments at the site total US$2m.
Commercial director Sergiu Stoicov said "We aim to bring new methods to help the construction industry build sustainably. Through Inshaatchi and Optimal, we are taking a step in the race for CO2 reduction and the use of alternative raw materials. Holcim Azerbaijan is the first company in the Caucasus to offer green cement.”
Azerbaijan produced 3.42Mt of cement throughout the first 11 months of 2023. This represents a 4.1% year-on-year rise from 11-month 2022 levels. Meanwhile, clinker production rose by 10% year-on-year to 3.51Mt.
Building codes and low-embodied carbon building materials
15 November 2023Last week the US General Services Administration (GSA) announced that it was investing US$2bn on over 150 construction projects that use low-embodied carbon (LEC) materials. The funding is intended to support the use of US-manufactured low carbon asphalt, concrete, glass and steel as part of the Inflation Reduction Act. For readers who don’t know, the GSA manages federal government property and provides contracting options for government agencies. As part of this new message, it will spend US$767m on LEC concrete on federal government buildings projects following a pilot that started in May 2023. The full list of the projects can be found here.
This is relevant because the US-based ready-mixed concrete (RMX) market has been valued roughly at around US$60bn/yr. One estimate of how much the US federal government spent on concrete was around US$5bn in 2018. So the government buys a significant minority of RMX in the country, and if it starts specifying LEC products, this will affect the industry. And, at present at least, a key ingredient of all that concrete is cement.
This isn’t the first time that legislators in the US have specified LEC concrete. In 2019 Marin County in California introduced what it said was the world’s first building code that attempted to minimise carbon emissions from concrete production. It did this by setting maximum ordinary Portland cement (OPC) and embodied carbon levels and offering several ways suppliers can achieve this, including increasing the use of supplementary cementitious materials (SCM), using admixtures, optimising concrete mixtures and so on. Unlike the GSA’s approach in November 2023 though, this applies to all plain and reinforced concrete installed in the area, not just a portion of procured concrete via a government agency. Other similar regional schemes in the US include limits on embodied carbon levels in RMX in Denver, Colorado, and a reduction in the cement used in RMX in Berkeley, California. Environmental services company Tangible compiled a wider list of embodied carbon building codes in North America that can be viewed here. This grouping also includes the use of building intensity policies, whole building life cycle assessments (LCA), environmental product declarations (EPD), demolition and deconstruction directives, tax incentives and building reuse plans.
Government-backed procurement codes promoting or requiring the use of LEC building materials for infrastructure projects have been around for a while in various places. The general trend has been to start with measurement via tools such as LCAs and EPDs, move on to government procurement and then start setting embodied carbon limits for buildings. In the US the GSA’s latest pronouncement follows on from the Federal Buy Clean Initiative and from when California introduced its Buy Clean California Act in 2017. Outside of the US similar programmes have been introduced in countries including Canada, Germany, the Netherlands, Sweden and the UK. On the corporate side members of the World Economic Forum’s First Movers’ Coalition have committed to purchasing or specifying volumes of LEC cement and/or concrete by 2030. Examples of whole countries actually setting embodied carbon emissions limits for non-government buildings are rarer, but some are emerging. Both France and Sweden, for example, introduced laws in 2022 that start by analysing life-cycle emissions of buildings and will move on to setting embodied carbon limits in the late 2020s. Denmark, Finland and New Zealand are also in the process of introducing similar schemes. The next big move could be in the EU, where legislators are considering embodied carbon limits for building materials as part of its ongoing revisions to its Energy Performance of Buildings Directive or the Construction Products Regulation legislations. Lobbying, debate and arguing remains ongoing at present.
To finish, Ireland-based Ecocem spent a period in the 2010s attempting to build a slag cement grinding plant at Vallejo, Solano County, in the San Francisco Bay Area of California. The project met with considerable local opposition on environmental grounds and was eventually refused planning permission. The irony is that slag cement is one of those SCM-style cements that Marin County, also in the San Francisco Bay Area, started encouraging the use of just a few years later. Ecocem held its inaugural science symposium in Paris this week. A number of scientists who attended the event called for existing low carbon technologies to be adopted by the cement and concrete sectors as fast as possible. One such approach is to lower the clinker factor in cement through the use of products that Ecocem and other companies sell. A point to consider is, if Marin County’s code or the GSA’s recent procurement directive came earlier, then that slag plant in Vallejo might have been built. Encouraging the use of LEC building materials by governments looks set to proliferate but it may not be a straightforward process. Clear and consistent policies will be key.
Switzerland: Holcim recorded 7.4% year-on-year growth in its organic sales to US$15.3bn in the first half of 2023. However, in real terms, its sales fell by 11% year-on-year from US$17.1bn during the first half of 2022. Its sales of cement grew by 13.8% on an organic basis to US$7.93bn, down by 21% in real terms from US$10bn. Cement constituted 52% of revenues, compared to 58% in the first half of 2022. Holcim's group share of net income rose by 9% to US$1.47bn from US$1.35bn.
Chair and chief executive officer Jan Jenisch noted 'continued profitable expansion' in the growing North American market and 'accelerated green growth' in the group's Europe and Latin America regions. He said “In line with our Strategy 2025 - Accelerating Green Growth, we reduced our overall CO2/net sales by 18% while building billion-dollar brands with ECOPact and ECOPlanet. It’s exciting to be at the forefront of decarbonising Europe with three additional grants from the EU Innovation Fund for our carbon capture, utilisation and storage projects, making us the first in our sector with five projects supported by the EU. We look forward to finishing the year strong and to further decarbonising building.” Jenisch concluded that the results 'confirm Holcim’s strong positions across all markets, delivering superior profitability and growth with leading sustainable building solutions and brands.'