Displaying items by tag: low carbon cement

Belgium: The Alliance for Low-Carbon Cement & Concrete (ALCCC) has marked its first anniversary with a new policy roadmap aimed at achieving net zero emissions by 2040. Initiated in May 2023, the alliance brings together environmental NGOs and industry stakeholders to transform the cement and concrete sectors. The ALCCC has grown significantly, now comprising 25 members.

Senior programme manager Joren Verschaeve from ECOS, the coordinator of ALCCC, said "Our members show that the technologies needed to make low-carbon cement and concrete the norm already exist. This uniquely positions our Alliance to raise the alarm when policies and standards lead to unfair competition instead of a greener future – and the latter is perfectly achievable if policymakers implement our roadmap."

US: Sublime Systems has announced the first-ever commercial application of its low-carbon Sublime Cement product at WS Development’s One Boston Wharf building in Massachusetts. The concrete placement is located in the Paseo indoor public space at the office building. The floor will be marked with educational materials explaining the significance of decarbonised cement in combating global climate change.

Leah Ellis, the CEO and Co-Founder of Sublime Systems, said “Buildings are monuments to the values of the people who build them, and the One Boston Wharf project represents WS Development’s leadership in ushering in our post-carbon future.” She continued “They are creating not only the building but the world where people want to be. We are honoured to have Sublime Cement featured so prominently here and are confident this pioneering place will inspire infrastructure owners everywhere to embrace low-embodied-carbon materials as a powerful tool for achieving our global net-zero goals.”

Sweden: Peab has entered a product delivery agreement with Stockholm-based start-up CemVision, starting from 14 May 2024. CemVision has developed a cement that reportedly reduces CO₂ emissions by over 95% compared to traditional cement, by replacing limestone and fossil fuels with refined industrial waste and renewable energy. Over the next few years, Peab will use CemVision's ultra-low carbon cement for various projects, including infrastructure, water treatment, foundation work and prefabricated concrete.

Oscar Hållén, CEO of CemVision, said “We are thrilled to be able to deliver our product to Peab. We see that green cement has become crucial for entire industries to be able to meet their climate commitments. The demand is already enormous and all forecasts indicate that it will only increase.”

US: 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.

Thailand: 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.

France: 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.

France: 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.

France: 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.

Sweden: 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.”