Displaying items by tag: concrete

France: Vicat started using a CO₂ntainer system supplied by UK-based Carbon8 Systems at its Montalieu-Vercieu cement plant in November 2020. It uses captured CO₂ from the unit’s flue gas emissions to carbonate cement-plant dust and produce aggregate, which can then be used to make products such as concrete. The system has particular relevance for a plant burning alternative fuels due to the additional chlorinated dust created compared to the use of conventional fossil fuels. The company says it is the first European cement producer to use the process at an industrial scale. Previously, Carbon8 Systems said that its CO₂ntainer would process and convert up to 12,000t of cement bypass dust in its first phase of operation.

Vicat Group scientific director Laury Barnes-Davin said, “We were drawn to Carbon8 Systems’ two-part technology: capturing the CO₂ that Montalieu emits, and using it to produce an aggregate that can be marketed in the construction industry. It opens up great potential for our operations not just in France but also in all the countries where we work across the globe.” The group hopes to reach a 100% alternative fuel substitution rate in France by 2024.

US: Mexico-based Cemex has launched the Vertua range of low and net-zero CO₂ concrete products in the US following introductions in Mexico and Europe. The range consists of Vertua Classic, Vertua Plus and Vertua Ultra. The company has begun by selling Vertua Classic – which it says offers a 20–30% reduction in CO₂ emissions – in Bay Area, Central Valley, Los Angeles, Sacramento and San Diego, California. Vertua Plus and Vertua Ultra products will be introduced in 2021.

California regional president Francisco Rivera said, “Since many customers are motivated to reduce the carbon footprint of their projects, we are delighted to offer Vertua Classic, which is suitable for a wide range of commercial and residential applications. Our Vertua products are uniquely designed to balance limited carbon specifications with our customers’ needs for high-quality performance and resilience.”

France: LafargeHolcim subsidiary Lafarge France has announced a planned upgrade to its 120,000m³/yr Javel concrete plant involving a capacity reduction to 80,000m3/yr. It says that this corresponds to the significant reduction in the production capacity of the future Mirabeau power station and ’the expectations of residents and public authorities.’ The company has described the project as a ‘modernisation’ and from 2023 it will see at least 50% of its production become low or very-low carbon concrete products.

The producer said, “LafargeHolcim's approach by requesting the withdrawal of the existing authorisation thus consolidates its commitments vis-à-vis the stakeholders in the consultation process. The enforcement of the environmental controls announced by Paris Seine Normandy Ports (HAROPA) will of course be maintained and LafargeHolcim is fully in favour of maintaining the strictest controls on the part of the state services.”

Mexico: Cemex has launched Vertua, a range of low and net-zero CO₂ concrete products, in Mexico. Vertua uses a geopolymer binder solution created by Cemex’s Research and Development Center in Switzerland. It forms “one of the main components of the ambition to deliver net-zero CO₂ concrete for all products and geographies by 2050,” according to the company.

Ricardo Naya, the president of Cemex Mexico, said, “With Vertua, we are taking a decisive step in addressing climate change in Mexico and the world, by offering a line of concretes with up to 70% lower carbon emissions. In Cemex, we embrace the circular economy concept and put it into action by offering our customers solutions like Vertua to keep them at the forefront of sustainability efforts."

Americas: Switzerland-based LafargeHolcim has begun its roll-out of ECOPact low-carbon concretes in its Latin America region, launching the product range in Ecuador, Colombia and Mexico to “meet growing demand for green products.” The company says that the launch in other markets will follow in early 2021. It said “this roll-out of ECOPact builds on its successful market adoption across Europe, the UK, the US and Canada.” The producer additionally plans to introduce its ECOLabel “to transparently communicate the environmental benefits of its green cement range” across the Disensa retail network from December 2020, enabling customers to “easily identify products that comply with the company’s green criteria, including lower carbon dioxide (CO₂) footprint and recycled content.” Every country in the region will have at least one ECOlabel product, according to the company.

Latin America regional head Oliver Osswald said, “With the roll-out of the widest range of green building materials in Latin America, we are committed to leading the way in sustainable construction. Building on our region’s excellent third quarter 2020 results, demonstrating strong resilience despite an unparalleled health crisis, Latin America is well positioned to tackle the challenges ahead. We have a clear and unified strategy supported by two strong pillars: a rapidly expanding Disensa retail franchise network, and a fully orchestrated regional push toward green building solutions.”

LafargeHolcim’s Latin America retail network Disensa will reach 2500 stores in 2020, almost double the number in 2018. The company said, “Disensa will become the central network to reach millions of consumers with a diverse product portfolio, based on quality and environmental benefits by offering ECOLabel products on a wide scale. Disensa will also introduce new digital experiences to the buying process and eventually become a full line of stores from Disensa Express to Disensa MAX!”

LafargeHolcim will host the First Latam Virtual Convention for current and potential Disensa franchisees from 25 – 27 November 2020, with participants from eight Latin American countries.

UK: DB Group has supplied its Cemfree concrete product to a site in Birmingham, West Midlands for use by the Environment Agency in a flood defence project. It says that the agency will use the concrete “for kerb bedding and backing over several kilometres in conjunction with various recycled products in an effort to reduce the projects’ carbon footprint.” Cemfree is a low carbon concrete made using ground blast furnace slag (GGBS) and pulverised fly ash.

Switzerland/France: Along with its partner Batica, LafargeHolcim is optimising the design of a low-carbon house, bringing together the latest innovations developed by the group's global research and development centre in Lyon, France.

Construction of the House of Tomorrow began at the end of October 2020 in Saint-Caprais-de-Bordeaux, Gironde. The materials used for its construction will have a CO₂ footprint more than 40% lower than a traditional house, and an optimised energy performance. The integration of these innovations in the house has made it possible for such a property to remain financially accessible to buyers thanks to controlled costs.

To achieve low CO₂ emissions performance, LafargeHolcim used its innovative cement and concrete products, all of which are available on the French market. Foundations were poured using ECOPact AA concrete, with emissions 80% lower than standard concrete. ECOPact A concrete, with CO₂ emissions 50-70% lower than standard concrete, will be used for the compression slab of the VS floor (crawl space). Airium, an insulating mineral foam, will be used to insulate the walls. A very low density concrete – 40-300kg/m³ depending on the mix – Airium represents an environmentally friendly, healthy and affordable insulation solution. LafargeHolcim’s Agilia Chape Thermic fluid screed will be used to coat the under-floor heating elements.

US: The Portland Cement Association (PCA) says it plans to develop a roadmap by the end of 2021 to help its member companies achieve carbon neutrality across the concrete value chain by 2050. It maintains that ‘concrete is critical to building a sustainable future’ and reinforced the benefits of concrete such as energy efficiency, lower life-cycle costs, durability and resilience. The roadmap is intended to solve problems facing the industry such as developing new technologies to reduce energy consumption and to develop and adopt related regulations.

“As the second most used material on earth and a cornerstone of our economy, we understand the critical role cement and concrete play in our nation’s future, and we are committed to an industry-wide effort that achieves carbon neutrality,” said Tom Beck, chairman of the PCA and president of Continental Cement. Rick Bohan, Vice President, Sustainability for the PCA added, “Developing a roadmap to carbon neutrality by 2050 further demonstrates our industry’s commitment to be a part of the solution and tackle this global issue.”

The PCA says that the industry has reduced energy consumption by 35%, emissions intensity by 11% and since 1990 has increased its use of alternative fuels.

China: Switzerland-based LafargeHolcim has announced the formation of green building solutions partnership with Southeast University (SEU) in Nanjing for research into concretes and mortars for use in 3D printing in construction. The company says that the partnership is a step towards achieving its aim of becoming a “full 3D printing solutions provider.”

Head of research and development Edelio Bermejosaid, “Our global network of academic partners is critical in helping us think outside the box. We need the brightest minds to help us lead the next frontier of building solutions.”

France: LafargeHolcim subsidiary Lafarge France says that it will continue to provide its regular service to customers as operations continue into a second national coronavirus lockdown in 2020. This was made possible by the government’s decision to permit the continuation of construction and industrial activities, according to the company.

It said, “The company has learned a lot since the containment last spring and is prepared to guarantee the best possible service for all of its markets, even under the specific conditions linked to the acceleration of the Covid-19 epidemic. All activities - cements, concretes and aggregates - will therefore operate normally throughout the country.” It added, “All our sites are now showing sufficient stock levels to deal calmly with the coming months.”