Displaying items by tag: supplementary cementitious materials

US: Amazon and Brimstone have announced successful third-party test results for Brimstone’s lower-CO₂ ordinary Portland cement (OPC), which meets ASTM C150 requirements using Amazon slab mix designs. The companies will continue testing through 2025 and 2026. On the basis of the successful tests, Amazon has signed a commercial agreement to reserve annual volumes of OPC and supplementary cementitious materials from Brimstone’s upcoming plant in Oakland, California.

Titan Group announced this week that it will build a processing and beneficiating unit for fly ash at Warrington in the UK. The move marks both a trend in fly ash projects in the UK recently and Titan’s own focus in the country.

Titan has struck a deal to use ponded fly ash at the former Fiddler’s Ferry power station in the North-West of England. It aims to process 300,000t/yr of wet fly ash from 2027 onwards with the option to double this capacity if desired. The processed fly ash will meet the BS EN 450 standard for subsequent use in cement or concrete. Crucially, Titan intends to use the technology of its subsidiary, ST Equipment & Technology (STET). This company has a proprietary dry electrostatic process that it uses for fly ash beneficiation. Titan acquired STET in 2002. It says its process is being used at 12 power stations in the US, Canada, the UK, Poland, and South Korea. The project at Fiddler’s Ferry will be the 20th fly ash project developed with STET technology.

Titan has not commented on the specifics of its arrangement with site-owner PEEL Group other than to describe it as a ‘long-term agreement.’ It currently operates a terminal in Hull, on the other side of the country, 160km from Warrington. As for Fiddler’s Ferry, the coal-fired power plant closed in 2020. Prior to this though RockTron Group built a 800,000t/yr unit at Fiddler’s Ferry to process both ‘fresh’ and stockpiled fly ash in the late 2000s. Unfortunately the company entered administration in 2013. Later, Power Minerals was reportedly selling fly ash from the plant at the time that its closure was announced in 2019. A report commissioned by consultants Arcadis for the local council reported that ash including pulverised fuel ash (PFA) was present in the lagoons at the site.

Other companies have also been looking at the fly ash market in the UK. Invicta, a joint venture between Türkiye-based Medcem and Brett Group opened a terminal at Sheerness in Kent in 2024 to import PFA and cement. In April 2025 a ship unloader supplied by Van Aalst was delivered to the port. Then in May 2025 it was announced that Mecem is planning to build a terminal in Liverpool to import cement and supplementary cementitious materials (SCM), such as fly ash and granulated blast furnace slag. The terminal will have a combined storage capacity of 45,000t in four silos in its initial phase and is scheduled for completion in mid-2026. Meanwhile, the Drax power station said in March 2025 that it had signed a 20-year joint venture agreement with Power Minerals to process legacy PFA. A unit at the now biomass power plant in Yorkshire is scheduled to start by the end of 2026 with an initial production capacity of 400,000t/yr.

The background to this interest in fly ash in the UK appears to be a local cement sector struggling with high energy costs and low capacity-utilisation rates. Reports in local media in late June 2025 cited preliminary estimates that cement output may have reached an ‘all-time low’ in 2024. High electricity prices were blamed for the situation by the Mineral Products Association (MPA) and it warned of mounting imports from the EU and North Africa. All of this was timed to coincide with a release of a new Industrial Strategy by the UK government. For more on the UK cement sector in general see Global Cement Weekly in May 2025 and Edwin Trout’s feature in the June 2025 issue of Global Cement Magazine.

Readers will be aware of the growing attractiveness of SCMs for cement and concrete production for both cutting costs and meeting sustainability goals. A report by McKinsey on SCMs for the cement sector in late 2024 forecast that SCMs and fillers in Europe could represent an emerging value pool that could reach €8 – 10bn in 2035 as the price of cement steadily rises. The SCMs being used are likely to change as sources of industrial SCMs such as slag and ash dwindle and others such as clays, pozzolans or limestone become more available. The UK may have closed its last coal-powered power plant in 2024 but ash from ponds can still be reclaimed or ash can be imported if the economics makes sense. Recent investments by Titan, Medcem and Power Minerals suggest that the price is indeed right. The interest of two major cement exporting companies amongst the three names above also indicates changing market dynamics. Expect more of these kinds of deals and investments in the UK, Europe and elsewhere in coming years.

US: Terra CO2 (Terra) has raised US$124.5m in series B equity funding, with co-leads Breakthrough Energy Ventures, Eagle Materials, GenZero and Just Climate, the round included investment from Barclays Climate Ventures. Additional strategic investors to join the round include Cemex and Siemens subsidiary Siemens Financial Services.

The capital will support the construction of Terra’s first 240,000t/yr advanced-processing facility in Dallas Fort Worth, expansion of its team and sites, and development of further commercial-scale cementitious projects.

CEO Bill Yearsley said “Terra's mandate is to deliver cementitious material solutions that the market would purchase solely based on cost and performance, even if there was no carbon benefit. The fact that Terra's cementitious materials also offer significant carbon mitigation is an additional advantage for the built environment.”

Terra produces supplementary cementitious materials as an alternative to traditional Portland cement, from resources like fly ash. Its second product, Opus Zero, is currently in the testing phase and would serve as a complete replacement for Portland cement.

Sweden: Cemvision has developed a patent-pending beneficiation process to upcycle electric arc furnace (EAF) and basic oxygen furnace (BOF) slags into high-performance supplementary cementitious material (SCM), while recovering valuable metals.

Third-party testing found the material performs as well as or better than ground granulated blast-furnace slag (GGBS). Cemvision recovers 99% of the iron oxide content from EAF slag for reuse in steelmaking, as well as other metals like chromium.

The output will support Cemvision’s Re-Ment Massive and Rapid products as clinker-replacing SCMs. The process was piloted with metallurgical research institute Swerim.

Cemvision CEO Oscar Hållén said “This is a game-changer not only for the cement industry but for steel producers as well. Our process enables high-performing cement products from materials that would otherwise be treated as waste. With this innovation, we're proving that decarbonisation and circularity can go hand in hand, and at scale.”

US: Ozinga has broken ground on a 1Mt/yr alternative cement grinding plant in East Chicago, Indiana. The plant is equipped with a Gebr. Pfeiffer MVR5300-C6 vertical roller mill. It will produce ASTM C989-compliant slag cement and other blended cements. When operational in 2026, it will be the largest of its kind in North America, and avoid 700,000t/yr of CO₂ emissions from conventional cement production. Its location offers strategic rail, road and shipping access to large markets in the US and Canada.

East Chicago Mayor Anthony Copeland welcomed an anticipated 150 new jobs resulting from construction and subsequent operations at the plant.

US: Researchers at the Massachusetts Institute of Technology (MIT) have developed an AI tool to compare studies of alternative raw materials for cement production. A collaborative team from the MIT Concrete Sustainability Hub and MIT’s recycling research programme, Olivetti Group, published its findings in the Nature journal. The team mined 5.7m academic publications to identify 14,434 alternative raw materials. These belonged to 19 ‘types,’ including bottom ashes, fly ashes, calcined clays and slags, as well as less homogenous types such as biomass ashes, glasses and mine tailings. The study more than doubles the number of fly ashes and slags recorded on a database of this kind. The tool then provides a unified assessment of cementitious reactivity and pozzolanicity, also accounting for variables in particle size and amorphous content.

Canada/Greece: Titan Group and Carbon Upcycling Technologies have entered into a memorandum of agreement to explore the commercial deployment of Carbon Upcycling’s technology for producing local, low-carbon building materials. Carbon Upcycling will conduct feasibility studies at two Titan cement plants, with the aim of producing supplementary cementitious materials using captured CO₂ and local materials.

Carbon Upcycling’s demonstration plant is currently operating in western Canada, and the company is now developing its flagship commercial-scale project in eastern Canada.

Philippines: The Department of Trade and Industry (DTI) has announced that Taiheiyo Cement’s US$67m Luzon Distribution Terminal, which will supply up to 0.7Mt/yr of cement to Luzon, will begin operations in early 2026. The plant will use a high proportion of supplementary cementitious materials (SCM), including fly ash, slags and natural pozzolans.

Taiheiyo Cement has said that the terminal represents the Japan-based company’s long-term commitment to the Philippine cement market and that it is aware of recent DTI rules that aim to safeguard domestic cement producers.

UK: Medcem, a subsidiary of Turkish conglomerate Eren Holding, and UK-based Peel Ports Group will begin construction of a new deep-water cement terminal at the former P&O site at Gladstone Dock, Liverpool. Construction is scheduled to start at the end of May 2025, according to Construction Management magazine.

The €41m project’s first phase will include four silos with a combined capacity of 45,000t for cement and supplementary cementitious materials. The 2.3-hectare site allows for future expansion and increased capacity in subsequent phases. Completion is expected by mid-2026.

Medcem business development and investments director Enver Celikbas said “This new terminal significantly strengthens our presence in the UK market, consolidating our position as the leading provider of low-carbon cement and cementitious materials in Europe. The logistical advantages of Liverpool allow us to enhance our ability to accommodate large vessels and product handling.”

Ghana: CBI Ghana and joint venture partner Heidelberg Materials have commissioned the ‘world’s largest’ calcined clay plant in Ghana, according to an announcement by the German producer. The plant has a capacity of 400,000t/yr of calcined clay and uses local raw materials to reduce reliance on imported clinker.

Hakan Gurdal, member of the managing board of Heidelberg Materials, said “Based on calcined clay technology, we can now extend our offering of innovative, high-quality cement products, while reducing CO₂ emissions and utilising the rich local resources. The project has created over 300 local jobs."