
Displaying items by tag: Canada
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.”
New developments in alternative cement
16 October 2024One 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!
EnviCore closes seed funding round
16 October 2024Canada: 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."
Canada: Heidelberg Materials has invested in EnviCore, a Canada-based startup that is developing low-carbon solutions. Together, the companies will focus on increasing the use of recycled construction and demolition materials as supplementary cementitious materials (SCM). This collaboration includes planning a pilot SCM production facility near one of Heidelberg Materials' recycling hubs, pending an upcoming feasibility study. Heidelberg Materials has also acquired a minority stake in EnviCore.
Katharina Beumelbur, chief sustainability and new technologies officer and member of the managing board of Heidelberg Materials, said “EnviCore’s novel approach has the potential to unlock new possibilities of increasing the amount of recycled materials we use in our products. This could pave the way to further reduce our need for virgin materials, contributing towards preserving valuable natural resources and protecting our environment.”
Lafarge Canada launches low-carbon fuel facility at Exshaw plant
04 October 2024Canada: Lafarge Canada, a subsidiary of Holcim, has inaugurated a new low-carbon fuel facility at its Exshaw cement plant, in a joint effort with Geocycle Canada. The US$28m facility is supported by a US$7.4m contribution from Emissions Reduction Alberta through the government’s Technology Innovation and Emissions Reduction fund. It will reduce natural gas consumption by up to 50% for one of the plant’s kilns by substituting it with alternative fuels (AF) sourced from construction and demolition materials, primarily wood. Geocycle will process the materials into AF. This initiative is expected to divert up to 120,000t/yr of discarded materials from landfill, reducing CO₂ emissions by approximately 30,000t/yr.
President and CEO of Lafarge Canada (West), Brad Kohl, said "Our commitment to building a sustainable future is at the core of everything we do. The low-carbon fuel project is a prime example of how innovation and collaboration can drive positive change, lowering our environmental footprint through the use of discarded biomass materials while closing the material loop to conserve natural resources.”
Geocycle and Lafarge Canada partner for low-carbon fuel facility at Brookfield plant
25 September 2024Canada: Geocycle and Lafarge Canada, together with the Department of Natural Resources Canada, have opened a new low-carbon fuel plant at the Lafarge Canada Brookfield cement plant in Nova Scotia. The facility, which cost over US$7.5m and received US$2.6m in federal funding, will convert 14,000t/yr of discarded materials headed for landfill into low-carbon fuels, reducing the plant's reliance on fossil fuels and its carbon emissions by over 12,000t/yr. The materials to be repurposed include plastic and construction and demolition materials. The cement created at the facility will be used to make concrete for construction projects in the local area and is expected to create jobs for the local community.
President and CEO of Lafarge Canada (East) David Redfern said "Cement is a vital component of infrastructure projects that contribute to economic growth. By implementing sustainable and innovative solutions to reduce our environmental impact, we're serving the needs of our customers and the communities in which we operate both now and in the future. Our continued collaboration with Geocycle Canada reinforces our commitment to invest and advance circular construction in Canada."
Head of Geocycle North America Sophie Wu said "At Geocycle, our solutions are circular by design. We are happy to take another significant step in our ongoing partnership with Lafarge Canada. This is a great example of our work toward the decarbonisation of the construction industry in Canada."
Canada: Ash Grove Mississauga cement plant has entered a proposal with the Ministry of Environment Conservation and Parks to burn alternative fuels. This includes materials such as construction and demolition materials, paper fibre, wood, plastic and industrial rubber, according to the Insauga newspaper. Local residents have expressed concerns about potential toxicity and environmental impacts due to emissions from the plant entering the atmosphere. The association reportedly objected to a previous application allowing higher emissions levels at the plant. Ash Grove will address these concerns in a public meeting scheduled for 12 September 2024.
Carbon Upcycling joins Portland Cement Association
15 August 2024Canada: Canada-based carbon capture, utilisation and storage (CCUS) company Carbon Upcycling has been admitted to the Portland Cement Association (PCA). This new membership aims to support industry efforts to achieve carbon neutrality. The US Department of Energy previously announced over US$1.2bn in funding for PCA member companies to launch decarbonisation projects under recent federal initiatives. Carbon Upcycling has been developing a commercial CCS system at CRH’s cement plant in Mississauga.
PCA president and CEO Mike Ireland said "We are thrilled to have Carbon Upcycling join us as a member of the PCA, given our shared commitment to sustainability. Their efforts are helping the cement industry increase circularity and advance the industry's commitment to achieving carbon neutrality."
CEO of Carbon Upcycling Apoorv Sinha said "The most effective and credible pathway to decarbonising the cement industry is through strategic partnerships and collaboration with long-time industry leaders in the infrastructure sector. Joining the PCA underscores our commitment to advance sustainable practices and substantially reduce carbon emissions. We look forward to forging a low-carbon, resilient future with our fellow members."
Canada: Finland-based Wärtsilä will provide a hybrid-electric propulsion system for an 11,000t-capacity limestone carrier, commissioned by CSL Group with China-based CCCC Shanghai Equipment Engineering and Jingjiang Nanyang Shipbuilding. The order supports CSL Group’s decarbonisation strategy by optimising engine and battery load and reducing fuel consumption.
The vessel is scheduled for delivery to CSL Group in 2026 and will initially operate on a hybrid diesel and battery system, transitioning to full electric power by 2031 to reduce carbon emissions by 90%, according to CSL Group. Wärtsilä will supply the whole hybrid electric propulsion system, including generators, DC hub, energy management system, main propulsion e-motors, bow thruster e-motors and battery solution.
The director of Electrical & Power Systems at Wärtsilä Marine, Torsten Büssow, said "Wärtsilä is committed to making decarbonised shipping possible, so we are delighted to be supporting CSL with solutions that enhance the sustainability of their fleet. This is a short sea shipping vessel that will operate with a lot of manoeuvring and variable load profiles, and electrification and hybridisation systems are the most efficient for such vessels."
Canada: Minister of Environment and Climate Change, Steven Guilbeault, announced the reinvestment of up to US$1.6m from industrial pollution pricing proceeds into a new emissions reduction project at St Marys Cement in St Marys, Ontario. This initiative will involve the installation of a new kiln utilising low-carbon fuels, including discarded plastics, to reduce the use of carbon-intensive fuels used in the manufacturing process by up to 30%. The project aims for a reduction of over 39,900t of greenhouse gas emissions by 2030, according to Foreign Affairs news.