Displaying items by tag: Pennsylvania

Ecocem announced this week that it has achieved certification in the US for its ACT low-carbon cement technology. This follows CRH’s agreement to buy US-based Eco Material Technologies, a supplier of supplementary cementitious materials (SCM), which was revealed in late July 2025. These moves and others mark a flurry of activity by various companies in the US SCM sector in recent months.

Donal O’Riain, the founder and managing director of Ireland-based Ecocem, underlined the importance of certification in North America when he said that “The US is one of the largest cement markets in the world, and this certification will support integration into existing supply chains and offers a pathway for the sector to rapidly decarbonise.” The country imported just under a fifth, 19Mt, of its Portland and blended cement in 2024 according to the United States Geological Survey (USGS).

Ecocem started out as a manufacturer of cements made using ground granulated blast furnace slag (GGBS), a SCM, in the early 2000s. Its ACT technology was formally announced in 2022. It is described as a process that can make cements using “available fillers like limestone and local SCMs.” It is currently scheduled for a commercial launch in 2026, starting in France. In the US it is planning to build a terminal and mill at the Port of Los Angeles in California. This follows a previous attempt to build a slag grinding plant, also in California, in the 2010s.

CRH, another cement company with strong links to Ireland incidentally, said on 29 July 2025 that it had agreed to acquire Eco Material for US$2.1bn. The latter operates a network of fly ash, pozzolan, synthetic gypsum and green cement operations. It partners with electricity generators to process about 7Mt/yr of fly ash and 3Mt/yr of synthetic gypsum and other materials. As CRH’s CEO Jim Mintern put it, “this transaction secures the long-term supply of critical materials for future growth and puts CRH at the forefront of the transition to next generation cement and concrete.” The deal is expected to close by the end of 2025. In separate comments to analysts Mintern added that he expects the market for SCMs to double in the US by 2050.

Other players have also been busy in recent months. Amrize, for example, noted in its financial results for the second quarter of 2025 that it had broken ground on a new fly ash beneficiation facility in Virginia in the reporting period. Last week, Graymont and Fortera signed an agreement to produce Fortera’s ReAct low-carbon cement product by using Graymont’s existing lime production operations. Fortera runs a plant in Redding, California that takes captured CO₂ from the adjacent CalPortland cement plant and uses it to manufacture its own proprietary SCM. Back in April 2025 Buzzi Unicem said that it had partnered with Queens Carbon to produce a novel cement and SCM. The start-up was intending to build a 2000t/yr demonstration plant at Buzzi Unicem’s cement plant in Stockertown, Pennsylvania.

The backdrop to all of this attention on SCMs in the US are the cost of cement and sustainability. Using more SCMs reduces clinker usage in cement and it can reduce the cost. At the same time reducing the amount of clinker used decreases the amount of CO₂ emissions. So, for example, Ecocem says that its ACT technology can reduce CO₂ emissions by up to 70% compared to conventional cement.

A report by Mckinsey on SCMs in the autumn of 2024 reckoned that growth in the cement market in North America was expected to be ‘robust’ in the next 15 years to 2050. However, the sector faces material, particularly clinker, and labour shortages. Enter SCMs! It went on to assert that much of the available stocks of GGBS and fly ash in the country are effectively used. Yet, traditional industrial SCMs such as GGBS, fly ash and limestone are anticipated to be available for longer than in Europe as industries such as steel manufacture and electricity generation will take longer to decarbonise. Hence companies such as Ecocem are preparing to import them, ones like CRH are cornering existing stocks and others such as Fortera and Queens Carbon are working on creating their own ‘virgin’ sources. At the same time the American Cement Association has been promoting the use of Portland Limestone Cement in the country.

All this helps to explain the interest in SCMs in the US right now. It’s a busy moment.

US: Queens Carbon has secured US$10m in seed funding to scale up production of its novel cement and supplementary cementitious materials (SCMs). The start-up will build a 2000t/yr demonstration plant at strategic partner Buzzi Unicem USA's Stockertown, Pennsylvania, cement plant. The plant will demonstrate Queens Carbon’s low-energy Q-Reactor technology, which employs novel hydrothermal chemistry, with the help of steam and pressure, to combine standard cement feedstocks into carbon-neutral hydraulic cement and SCMs. The company’s flagship product, Q-SCM, is capable of replacing up to 50% of cement in concrete mixes. Queens Carbon says that it will now also begin preparations for its first full-scale commercial plant.

Buzzi Unicem USA was among investors in the seed funding round, led by Climate technologies investor Clean Energy Ventures, with participation from fellow venture capital firm Plug and Play.

Queens Carbon CEO Daniel Kopp said "With support from Clean Energy Ventures, Buzzi Unicem USA and the US Department of Energy, we're building next-generation technology and assembling the creative talent needed to drive industry revenues to move cement innovation forward and significantly reduce CO₂ emissions from cement production, all without a green premium."

Luigi Buzzi, Chief Technology Officer at Italy-based Buzzi, said "We know that achieving our goal of net-zero carbon emissions by 2050 demands forward-thinking solutions to enhance both our operations and our environmental performance.”

US: Buzzi Unicem has blamed a late tax payment in Pennsylvania on an accounting error. The cement company made the US$18m payment five months late, in May 2024, according to the Express Times newspaper.  The issue was highlighted by a lien filed in December 2023 in Northampton county civil court. Stockertown cement plant manager Rad Slavov clarified that the payment was timely but misallocated. He said "The company is financially strong and able to meet its obligations.”

US: Shipments of cement, including imports, in the US and Puerto Rico fell by 2.5% year-on-year to 80.7Mt in the first nine months of 2023 from 82.8Mt in the same period in 2022, according to data from the United States Geological Survey (USGS). Shipments fell in most states with the exception of Texas and Pennsylvania. The USGS estimated that, in September 2023, 98% of all blended cement shipments were of Portland Limestone Cement. Turkey was the biggest exporter of cement to the country during the reporting period at 6.3Mt followed by Canada, Vietnam, Greece and Mexico.

US: A fire broke out in a building at Buzzi subsidiary Buzzi Unicem USA's Stockertown cement plant on the evening of 13 July 2023. Local fire crews arrived at the plant in Northampton County, Pennsylvania, at 19:18. The Express-Times newspaper has reported that the fire affected an electrical room, and that parties present at the scene requested that power to at least a portion of the facility be cut.

US: Kosmos Cement has ordered a mobile ship unloader from Sweden-based Bruks Siwertell for use at its terminal in Pittsburgh in Pennsylvania. The product is designed to discharge vessels up to 5000dwt and has a continuous rated cement handling capacity of 300t/hr. Delivery is planned for the spring of 2023.

US: Buzzi Unicem USA plans to switch from producing Ordinary Portland Cement (OPC) to Portland Limestone Cement (PLC) at all of its plants by the end of 2022. It said that it intends to transition from traditional ASTM C150 type I and II (OPC) cements in favour of ASTM C595 type IL cement (PLC). So far its Cape Girardeau and Festus plants in Missouri, Greencastle plant in Indiana, Maryneal plant in Texas and Pryor plant in Oklahoma have already completed the move to the PLC. The San Antonio plant in Texas will complete its transition in June 2022, the Chattanooga plant in Tennessee will switch its product line by September 2022 and the Stockertown cement plant in Pennsylvania will complete its conversion later in 2022. The company added that its engineers will continue working to increase the limestone content in cement by up to the permitted 15% and develop High Early Limestone cement, along with other new cement products with reduced clinker content.

US: A fire has been contained within the alternative fuels system at Holcim US’ integrated Whitehall cement plant in Pennsylvania. Suppression systems were activated and then fire fighters attended the scene, according to the Express-Times newspaper. The plant has notified the US Mine Safety and Health Administration about the incident. No injuries have been reported and an investigation is ongoing. A fact sheet about the plant says that it uses 2m tires/yr as part of its alternative fuels mix. It uses coal and petcoke for 50% of its mix.

US: Buzzi Unicem has announced the upcoming transition of its 1Mt/yr Stockertown cement plant in Pennsylvania’s Northampton County to 100% Type IL Portland limestone cement (PLC) production in 2022. Local press has reported that Buzzi Unicem and its subsidiary Alamo Cement Company will have fully converted to PLC production at ‘several locations in the US’ before the end of the year, according to the group.

US: Flexicon has expanded the production facilities at its headquarters at Bethlehem, Pennsylvania. The increased 4645m² space at the site will be used to store sub-assemblies, crating and the staging of assembled equipment. This will allow the main plant to increase its production capacity for fabrication and assembly.

Flexicon specialises in bulk handling equipment. It owns and operates manufacturing facilities in Brisbane, Australia and Port Elizabeth, South Africa, and maintains factory-direct sales offices in Barcelona in Spain, Santiago in Chile and Singapore.