Displaying items by tag: alternative raw materials

Europe: In 2023, 29.7Mt of slag entered the built environment in building materials in the EU and the UK. 20.3Mt (68%) of the slag was granulated blast furnace slag, of which 18.3Mt (90%) was ground for use in cement production, with the other 2Mt (10%) serving as aggregates. The remaining 9.4Mt of the slag was steelwork slag, of which 600,000t (6.4%) was used in cement and concrete production, with the rest used for roadbuilding.

Between 2000 and 2023, slag substituted for 752Mt of limestone, clay and sand in clinker production and for 405Mt of aggregates across the EU and UK construction sectors.

Thomas Reiche, chair of the European slag association EuroSlag and managing director of the FEhS Building Materials Institute, said "Despite the tensions on the European steel market, ferrous slags were once again able to make an important contribution to resource conservation, climate protection and the circular economy in 2023."

Saudi Arabia: Al-Kifah Precast says that it is preparing to expand into other Middle Eastern countries, having more than tripled its sales since 2020. CEO Ehab Abu Salim says that the producer was a strategic supplier of precast concrete for Red Sea Global’s Red Sea Project in Tabuk Province, and now aims to support other major projects like the Neom new city and Amaala resort, also in Tabuk Province. Gulf Construction News has reported that the company has invested in research and development to establish best practices, as in its partnership with a UK-based company to produce marine concrete elements. It has reduced its CO₂ emissions through the use of alternative materials such as fibreglass, steel rebar and pozzolans.

Abu Salim said “Having a facility in the Red Sea Project was a strategic move. The plant produces all types of precast elements and we are also looking to improve the facility. We have an expansion planned; very soon it will be serving the entire region." He added “Precast technology helps to speed up projects, is more sustainable, offers higher quality, and the price is on par and sometimes even lower than using traditional construction solutions.”

Switzerland: Holcim has acquired recycling, ready-mix concrete and aggregates company Cand-Landi Group. The company employs 250 people across its operations in Western Switzerland. Holcim plans for Cand-Landi Group to supply alternative raw materials and fuels for use at its Eclépens plant. It says that the acquisition will increase its recycling capacity of construction and demolition materials by 100,000t/yr.

Holcim CEO Miljan Gutovic said "The acquisition of the Cand-Landi Group will advance decarbonisation and circularity in Switzerland, a lighthouse market for innovation at Holcim. I look forward to welcoming all 250 employees of the Cand-Landi Group and investing in our next chapter of growth together."

Canada: Hyperion Global Energy has fired up its pilot Tandem Carbon Recycling System at Lafarge Canada’s Bath cement plant in Ontario. The system mineralises captured CO₂ to produce mineral components for alternative building materials. It has a capture capacity of 1000t/yr. The partners will test the Tandem Carbon Recycling System in producing Lafarge Canada’s 30 – 90% reduced CO₂ ECOPact concrete.

Lafarge Canada’s Eastern Canada regional president and CEO of David Redfern said "Our collaboration with Hyperion marks an exciting milestone in our decarbonisation journey and the advancement of our circular construction technologies. We look forward to advancing our net zero strategy by leveraging carbon utilisation technology like Hyperion's, enabling us to further reduce CO₂ emissions from our operations while at the same time producing innovative and sustainable building solutions."

Hyperion CEO Heather Ward said "Working together with an innovative partner like Lafarge on this exciting pilot project allows us to apply our proprietary carbon recycling technology to large-scale industries, and make an immediate, measurable reduction on carbon emissions. At the same time, we are advancing our vision to offer a scalable and affordable decarbonisation solution for industry, and a market-driven profit incentive on the cost of carbon removal."

Indonesia: Cemindo Gemilang says that its subsidiary Merah Putih Beton has begun injecting CO2 captured using direct air capture (DAC) into its ready-mix and precast concrete products. The producer said that the method enables it to produce concrete using 18% less cement. The Koran Jakarta newspaper has reported that Cemindo Gemilang obtained the DAC technology under licence from its Canada-based developer. It deployed it following six months of trials in late 2023 – early 2024.

Cemindo Gemilang’s commercial director, Surindro Kalbu Adi, said “In the future, we will implement a lot of new technologies. The goal is that our Red and White brand products will be better and the quality of buildings will be even better.”

Colombia: Cemex Colombia has announced the launch of its 40% reduced CO₂ Vertua mortar.

The company said "Vertua aims to enable builders to adapt the sustainable features of their projects through its five specific and measurable attributes: lower carbon emissions, energy efficiency, water conservation, recycled materials and design optimisation."

India: Goa Waste Management Corporation (GWMC) has obtained a 20-year patent for its Laterite-Based Concrete Block. The company produces the block using up to 100% construction and demolition materials. Norway-based research organisation SINTEF was technical partner for the development. GWMC plans to licence the technology to producers.

GWMC said "This invention will lead to a significantly cleaner local environment, as construction and demolition materials are a major waste stream in Goa. The groundwater resources in Goa will also have a higher protection against unwanted leaching."

UK: Recycl8 has completed its first large-scale commercial project in partnership with Breedon Group. The partners supplied R8 Mix reduced-CO₂ concrete for the installation of an industrial floor slab at Aurora Energy Services site in Inverness. R8 Mix concrete is produced using incinerator bottom ash and Breedon Group’s blended cement.

Recycl8 chief executive officer Mark Gillespie said "We are excited to be working with Aurora Energy Services. It is particularly gratifying for us to be carrying out our first large-scale commercial project with an organisation which is committed to supporting the energy sector transition to net zero, with a particular focus on the renewables sector. With our commitment to fostering a sustainable, circular-economy future for the construction industry by playing our part in lowering carbon emissions from concrete manufacture, we share the same values and synergies."

Germany/US: Concrete production equipment supplier TopWerk Group has formally endorsed Partanna Global's carbon-negative binder as a replacement for cement in the production of concrete using its equipment. Partanna plans to install TopWerk equipment at its four upcoming production plants, under an exclusive three-year agreement. The endorsement is intended to help shift TopWerk's global customers from using cement to using Partanna Global’s binder.

Partanna Global CEO Rick Fox said “TopWerk's endorsement of Partanna represents a major vote of confidence in our technology from one of the most respected names in global construction. We’re humbled and proud that one of the world’s leading concrete machinery producers has given us their backing. We hope this signals to the industry that Portland cement is no longer the only solution in town, and that the days of burning rocks are fast coming to an end.”

TopWerk CEO Robert Gruss said "We believe our exclusive partner Partanna has come up with a truly impressive solution that can contribute to putting this polluting practice to an end. The company’s carbon negative binder is one of the most exciting innovations we have witnessed in our industry for decades. It is the most advanced alternative binder solution in the market and the only credibly carbon negative solution that has the potential to scale globally. Over the last two years, we have rigorously tested their formula and have validated its application as a direct replacement solution for Portland cement. In many ways, their binder actually performs better than the legacy solution.”

The endorsement follows Saudi Arabia-based property developer ROSHN's announcement of an upcoming carbon-negative concrete plant that will use Partanna Global's technology earlier in January 2024.

Switzerland: Carbon capture and storage (CCS) equipment developer and supplier Neustark says it plans to more than double the number of its CO₂ storage sites in Austria, France, Germany, Switzerland and the UK to 34 from 14. Neustark’s process turns mineralised captured CO₂ and existing mineral waste streams into useful limestone. Building materials producers lease Neustark’s storage sites to produce reduced-CO₂ alternatives such as recycled concrete. The sites currently have a total storage capacity of 5000t. Existing customers include Holcim.

Neustark CEO Johannes Tiefenthaler said “Neustark is scaling up rapidly, and we’re well on track to achieve our aim of permanently removing 1Mt of CO₂ by 2030. Our global goal is a series of reliable, region-specific CCS facilities that can be replicated anywhere, offering immediate sustainability benefits to local supply chains.”