Displaying items by tag: US

US: A team from the University of Colorado Boulder (UCB) has developed a carbon-neutral alternative cement from biogenic limestone. The limestone comes from farmed cocolitophores, which capture CO₂ as they grow.

The UCB scientists collaborated with colleagues from the University of Carolina at Wilmington and the National Renewable Energy Laboratory on the project. Their work has received US$3.2m in US Department of Energy funding.

This news story has been corrected to include the correct name of the University of Colorado Boulder

US: The Nevada Department of Transportation has approved the use of Portland limestone cement (PLC) for road construction and repairs. The department expects the move to reduce CO₂ emissions by 4000t/yr. It uses 45,000t/yr of cement in its projects. Local press has reported that transport contributed 35% of Nevada’s CO₂ emissions in 2022, making it the largest single source.

UK: The World Economic Forum and the Global Cement and Concrete Association (GCCA), in collaboration with Boston Consulting Group (BCG), have released a Mission Possible Partnership Report which identifies the nations that are prioritising green public procurement. These are the Netherlands, Sweden, Germany, France, the UK, and select US states. The report titled ‘Low-Carbon Concrete and Construction - A Review of Green Public Procurement Programmes’ identifies a framework for how these six countries are demonstrating leadership in green public procurement of concrete and construction.

The first component of the framework is the foundation, which includes establishing standards for reporting emissions, databases and tools for tracking emissions and establishes baselines. The second part of the framework, procurement polices, builds upon and reinforces the foundation by setting policies that require environmental disclosures, mandate carbon limits, and incentivise low-carbon design, and use of low-carbon materials.

Approximately 7% of global carbon emissions come from cement, and about half of the cement used globally is procured by the public sector. Governments also spend US$11tn/yr on procurement, about 12% of global gross domestic product (GDP) and regulate the construction industry via building codes. Therefore, governments play a critical role in driving demand to decarbonise the concrete and construction sector to achieve net zero goals.

Matt Rogers, the chief executive officer of the Mission Possible Project said “The demand signals in the market for green industrial products are among the most important opportunities to accelerate the path to net zero across industrial sectors. For material sectors like cement and concrete, government procurement practices will play an especially important role. This report summarises the current best practices in government procurement for green cement across multiple markets. Insights like these provide the government procurement professionals practical tools and technical insights that they can use today to create demand-pull for the most innovative low carbon cement and concrete offerings in the market.”

US: The Portland Cement Association (PCA) has opposed a proposed federal temporary suspension to a petrol tax. PCA president and chief executive officer (CEO) Mike Ireland said, “Pausing the federal gas tax is the wrong decision at the wrong moment. Gas tax revenues fund the Infrastructure Investment and Jobs Act (IIJA), which is a once-in-a-lifetime opportunity to remake American industry and infrastructure with sustainability at its core. Removing the funding from the gas tax will strangle the IIJA before it is even up and running.”

The passage of the IIJA has coincided with PCA's launch of its Roadmap to Carbon Neutrality, which outlines the steps needed to achieve carbon neutrality across the entire cement-concrete-construction value chain by 2050. The PCA says that implementing the changes in its roadmap will require ‘significant’ funding such as those generated from the petrol tax.

US: Sweden-based Bruks Siwertell has commissioned a Siwertell 490 F-type ship unloader at Colonial Group’s Georgia Kaolin Terminals in Savannah, Georgia. The unloader has a rated cement handling capacity of 800t/hr, discharging vessels of up to 55,000dwt.

US: Eco Material Technologies, a producer of sustainable cementitious materials, has opened its Kirkland Pozzolan Mine in Yavapai County, Arizona. The 40-hectare site is one of the largest natural pozzolan mines in the US.
"We are excited for the opening of the Kirkland Pozzolan Mine, which will benefit not only Yavapai County but all of Arizona as well as the surrounding region," said Grant Quasha, CEO of Eco Material Technologies. "Without the support of elected officials, including Governor Doug Ducey, Senator Mark Kelly, State Senator Karen Fann and State Representative Quang Nguyen, we would not be celebrating this milestone achievement."

The event also recognised the hard work and dedication of the plant's employees, as well as Eco Material's contributions to the area including bringing wireless internet service to the surrounding community, planting new trees and generating significant tax revenue for the state.

Canada/US: Lime company Lhoist North America raised the price of its lime products by up to 45% from 13 June 2022. The producer acknowledged the ‘challenging circumstance’ for all parties at an ‘unprecedented’ time. It said “We look forward to continuing to deliver the expected value to our customers.”

US: CalPortland has appointed Hamed Maraghechi as its Director of the Central Research Laboratory. He will be based at the CalPortland Center of Technical Excellence in southern California where he will conduct new research and testing related to issues such as carbon reduction and sequestration to help the company achieve its commitment to lowering greenhouse gases. He will also oversee all advanced analytical services for customers and for internal operations, in this newly created position.

Maraghechi holds a PhD in Civil and Environmental Engineering with a materials focus from the Pennsylvania State University, a master’s degree in Civil and Environmental Engineering from the University of Hawaiʻi at Mānoa and a master’s degree in Polymer Engineering from the University of Tehran in Iran. He was most recently a senior scientist at Fortera working on the design and development of low CO₂ cement and concrete formulations. Prior to Fortera, he worked as a scientist at Boral IP Holdings and the École Polytechnique Fédérale de Lausanne (EPFL) in Switzerland.

Pakistan: DG Khan Cement Company is ready to export 50,000t of cement to the US following a certification process. The Tomini Felicity bulk carrier was reportedly being loaded at the Port of Karachi in mid-June 2022 for shipping to Houston in Texas, according to the News International newspaper. The transport is part of a 100,000t deal with a US-based company that was arranged in mid-2021. The intervening period has been spent arranging the necessary certificates. The export is believed to be the first time a Pakistan-based producer has sent cement to the US.

Canada/US: Holcim North America has invested in Blue Planet to support the development and commercialisation of its mineralisation technology. Blue Planet’s process sequesters CO₂ with building waste feedstock such as recycled concrete, cement kiln dust (CKD) and slag to produce new aggregate products. Each tonne of Blue Planet’s aggregate can mineralize up to 440kg of captured CO₂. Lafarge Canada, Holcim US, and Blue Planet will start a multi-year collaboration to help identify potential to use the mineralisation technology to further lower the carbon footprint of the companies’ cement, aggregates and concrete operations, with the potential to expand to other operations in the Holcim Group around the world.

“This is an important step for us in North America. Our vision is to transform our St Constant Plant in Montreal into a carbon campus that ultimately advances commercialisation of mineralisation technologies, including Blue Planet’s products,” said David Redfern, president and chief executive officer, Lafarge Canada. “We look forward to advancing our Net Zero strategy by leveraging mineralization technology that allows us to use the CO₂ from our own cement plants to produce carbon neutral or carbon negative sand and gravel products.”