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News Displaying items by tag: circular economy

Displaying items by tag: circular economy

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Regenera commissions 500,000t/yr Tel Aviv construction, demolition and excavation waste recycling plant

15 September 2023

Israel: Cemex’s circular construction subsidiary Regenera has commissioned a construction, demolition and excavation waste recycling plant in Tel Aviv. Cemex said that the plant has the capacity to recycle 500,000t/yr of construction, demolition and excavation waste. Cemex acquired the site following its acquisition of a 51% stake in construction, demolition and excavation waste recycling company SHTANG Recycle, which it integrated into Regenera in early 2023.

Cemex’s Europe, Middle East, Africa and Asia regional president Sergio Menéndez said “This new facility in Tel Aviv marks a significant milestone in Cemex's commitment to circularity, which is of such importance to our global ambition of reaching net zero by 2050. We are proud to play a vital role in the growth of our Regenera business, turning building waste into recycled materials for a more sustainable future. I thoroughly enjoyed visiting our Israeli operation and opening the plant, and was inspired by the passion of my local colleagues for innovation and collaboration in pursuit of a better future.”

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CarbonBuilt’s reduced-CO2 concrete block technology win three Fast Company Innovation by Design prizes

24 August 2023

US: Carbon Built’s proprietary technology for the production of reduced-CO2 concrete blocks won awards across three categories at the Fast Company Innovation by Design Awards 2023. The product won the Circular Design, Materials and Sustainability prizes. Carbon Built’s technology enables existing concrete block plants to use common alternative raw materials to produce blocks with 70 – 100% lower CO2 emissions than ordinary Portland cement-based blocks.

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New standard clears geopolymer concrete for infrastructure applications in Australia

04 August 2023

Australia: Alternative cement and concrete producers have welcomed a new Australian civil engineering standard that allows builders to use reduced-CO2 geopolymer concrete in infrastructure projects. Wagners, which produces Earth Friendly Concrete (EFC), said that the revision has removed one if its key barriers to wider market acceptance. EFC replaces 100% of cement with supplementary cementitious materials, including ground granulated blast furnace slag (GGBFS) and pulverised fly ash, by virtue of its binder technology. Wagners previously supplied EFC for the London Power Tunnels project in the UK, based on local technical approval-based building codes. The producer now expects a new standard like the Australian one to follow in the EU.

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Lafarge France supplies 100% recycled concrete for housing project

03 July 2023

France: Lafarge France is participating in a 76-unit housing development project called Recygénie, at Gennevilliers in Hauts-de-Seine. Lafarge France will supply the project with 100% recycled concrete for use in facades, interior walls and roof slabs. It produced 2000t of 100% recycled 'clinker' at its Altkirch cement plant in Haut-Rhin during a suspension of ordinary clinker production in 2022. It has produced 1600m3 of recycled concrete to date. The concrete won the New Materials Prize at L'Usine Nouvelle's Sustainable Industry Awards 2023.

The Recygénie housing project is due for delivery in late 2024.

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Global Cement and Concrete Association announces Innovandi Open Challenge 2023 shortlist

30 June 2023

World: The Global Cement and Concrete Association (GCCA) has named the 15 anticipated deliverers of low-CO2 cement and concrete production shortlisted for participation in its second Innovandi Open Challenge. The association chose the start-ups based on their potential to deliver CO2 emissions reduction in the global cement and concrete sector in line with its Concrete Future 2050 Net Zero Roadmap. The applicants are presenting their pitches to GCCA members on 30 June 2023. All those accepted will gain access to members' plants, labs, networks and expertise. The following start-ups made the Innovandi Open Challenge 2023 shortlist:

 

Arrakis Materials US Carbon negative materials for concrete
Chement US Room temperature cement production
EcoAdmix Global UK Nanotechnology ('HDT') for concrete
EcoLocked Germany Biocarbon-based admixtures
EnviCore Canada Low temperature supplementary cementitious material production
Enzymatic US Carbon negative enzymatic concrete corrosion inhibition and recycling
Louis Structures US Municipal solid waste-based lightweight aggregates
MEP - SeaMix US Basalt fibre and graphene-based admixture
Nano Crete US Graphene-enhanced CO2 sequestration
Nanospan India India Graphene-based admixture
NeoCrete New Zealand Nano-activator for natural pozzolans
Queens Carbon US ~500°C cementitious materials production
The Cool Corporation UK Carbon negative carbon nanotube-based additive for concrete
Ultra High Materials US Clinkerless cement
Versarien Graphene UK Graphene-based admixture ('Cementene')

GCCA cement director and innovation lead Claude Loréa said “We received more than 70 quality applications, so drawing up a shortlist was challenging." Loréa continued "Our essential industry needs something easily scalable and affordable. Those start-ups on the list demonstrated the most potential, and we look forward to hearing more about their ideas. But we’ll also be keeping in touch with other start-ups who didn’t make this year’s shortlist, with future projects in mind.”

Published in Global Concrete News
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Carbonaide raises Euro1.8m for carbon neutral precast concrete production

28 March 2023

Finland: VTT Technical Research Centre subsidiary Carbonaide has concluded its seed funding round, having raised funds worth Euro1.8m. Lakan Betoni, which produces precast and ready-mix concrete, led the funding, along with utilities provider Vantaa Energy. Carbonaide will use the funds to build an industrial pilot plant for its carbon neutral precast concrete product at an existing precast concrete plant in Hollola. The plant will bind captured CO2 in the product at atmospheric pressure. The process generates 50% lower CO2 emissions than precast concrete production using ordinary Portland cement (OPC). Suitable raw materials include ground granulated blast furnace slag (GGBFS), green liquor dregs and bio-ash. In trial production, the use of GGBFS gave Carbonaide's concrete a negative carbon footprint of -60kg/m3.

Other sources of loans and in-kind contributions included Finnish state innovation fund Business Finland.

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AWHCL secures Mumbai construction and demolition waste management contract

10 February 2023

India: Antony Waste Handling Cell Limited (AWHCL) has won a US$124m contract for construction and demolition waste management services in Mumbai. Press Trust of India News has reported that the contract covers nine municipal subdivisions of the city and will last until 2044. AWHCL said that the contract will enable it to develop the circularity of cement and concrete within the local economy. It expects to commission 600t/day-worth of waste processing capacity by March 2023. The waste management company expects a recovery rate of 25% recyclable materials.

AWHCL chairman and managing director Jose Jacob said "This sub-segment of solid waste management provides tremendous growth opportunities given the number of infrastructure development projects underway, and the government's push to accelerate the economic growth with infrastructure being one of the important growth pillars."

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SRM Institute of Science and Technology patents paving block containing waste printed circuit board

02 February 2023

India: A team at SRM Institute of Science and Technology has patented a new concrete paving block produced using fibres from waste printed circuit board (WPCB). The refuse-derived material will replace some sand and clay in the concrete mix. SRM Institute of Science and Technology said that India generates 2Mt/yr of electronic waste (e-waste), and additionally imports this type of waste from other countries. Besides being non-biodegradable, WPCB is contaminated with colouring chemicals.

The developers said "The steadily rising volume of electronic waste poses a serious hazard to human health and the environment."

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Prefer and others secure Euro4.5m in EU funding for development of carbon negative concrete blocks

19 January 2023

Belgium: The EU Innovation Fund has awarded Euro4.5m to a consortium consisting of Prefer, gas provider Fluxys Belgium, lime producer Lhoist and carbonation technology developer Orbix. The collaborators are working on a project called CO2ncrEAT. The project will carbonate steel sector by-products with captured CO2 from Lhoist's Hermalle lime plant to produce alternative building materials. CO2ncrEAT will be the first project to employ Orbix's innovative technique for the purpose. Fluxys Belgium's pipeline technology will convey the Hermalle plant's emissions over a distance of 2km to a Prefer concrete blocks plant.

The consortium said that it will use 12,000t/yr of CO2 to produce 100,000t/yr of reduced-CO2 concrete blocks. The use of alternative raw materials in the blocks will further reduce their carbon footprint by 8000t/yr.

Prefer managing director Raphaël Grimont said “As market leader, we must ensure the sustainability of our business by offering innovative and eco-friendly products to our customers. With the CO2ncrEAT project, our building materials will be produced through a sustainable and efficient process and based on local, circular raw materials. The Prefer masonry block of tomorrow will retain all the advantages of the traditional block, with the difference that it will benefit from a negative carbon footprint. We are proud to develop this exceptional project together with key industrial partners, while benefitting from the trust of the European, Belgian and Walloon authorities.”

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Cemex launches bio-based admixtures

13 January 2023

World: Cemex has announced the launch of new bio-based admixtures which offer CO2 emissions reductions of up to 70% compared to oil-based admixtures in its Asian, European and Middle Eastern markets. The range includes 10% reduced-CO2 IsoPlast Bio, 20 - 30% reduced-CO2 IsoFlex Bio plasticisers and superplasticisers and 50% reduced-CO2 IsoFlow Bio high-performance superplasticiser technology, as well as CO2-reducing IsoMill Bio grinding aids. The products will subsequently become available in other markets during 2023.

CEO Fernando González said “Innovation is at the core of our efforts to become a carbon neutral company and foster a more circular building materials industry." He added "Innovative admixtures aim to enhance concrete's sustainable attributes for our customers further.”

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