Displaying items by tag: CO2
Prometheus Materials secures concrete masonry unit certificates for microalgae-based biocement
22 February 2023US: Prometheus Materials’ microalgae-based biocement has secured certification for use in concrete masonry unit (CMU) mixes. The cement now holds an ASTM C129 certificate for use in non-loadbearing CMUs and an ASTM C90 certificate for use in loadbearing CMUs. Prometheus Materials’ biocement produces concrete with comparable or superior mechanical, physical and thermal properties to ordinary Portland cement (OPC)-based concrete. It offers little-to-no CO2 emissions and 95% of water used in production is recycled.
Prometheus Materials CEO Loren Burnett said “We are thrilled to have achieved these two foundational certifications as we proceed in full force with our goal of decarbonising construction. Prometheus Materials’ product is poised to change the future of construction, converting one of the most carbon-polluting industries to a low-carbon – and one day net-zero carbon – reality.”
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."
Cemex Zement unveils first zero-emissions concrete mixer truck
10 February 2023Germany: Cemex Zement has unveiled a fully electric zero-emissions concrete mixer truck, the first in the industry. Sweden-based Volvo supplied the truck, an FMX model.
Mexico-based Cemex said that it is working to discover, pilot and scale technologies for emissions-free transport in the construction industry through its partnership with Volvo.
US: Holcim US has announced the launch of its ECOPact reduced-CO2 concrete in the Fargo, North Dakota, and Twin Cities, Minnesota, metropolitan areas. ECOPact products offer up to 80% reduced CO2 emissions compared with ordinary Portland cement (OPC)-based concretes, and can also integrate construction and demolition waste. Holcim US has sold the ECOPact range in Boston, Massachusetts, and Washington DC since 2020.
Holcim US' North Central regional senior vice president Randy Gaworski said "With countless developments already in the pipeline, and so much on the horizon, engineers, architects and developers are driving demand to integrate sustainable building practices throughout the region. This is an exciting opportunity to offer our customers high-quality, low-carbon products for meeting our shared commitments to sustainability and net-zero construction."
South Korea: Lotte Engineering & Construction and M-Tech have successfully developed a new 90% reduced-CO2 concrete with 5% cement content. Korea Economic Daily News has reported that the product has the same strength as ordinary Portland cement (OPC)-based concrete and has good resistance to salt damage.
Prefer and others secure Euro4.5m in EU funding for development of carbon negative concrete blocks
19 January 2023Belgium: 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.”
Cemex launches bio-based admixtures
13 January 2023World: 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.”
Canada: Lafarge Canada has signed an agreement with power provider TransAlta to recover and process fly ash from the site of the latter's decommissioned Edmonton coal-fired power plant. The project will use Ash-TEK's Ponded Ash Beneficiation System (PABS) fly ash beneficiation technology. The processed ash will then be able to replace up to 25% of cement in low-CO2 concrete production.
TransAlta previously secured with Lafarge Canada for the supply of renewable power to its Exshaw, Alberta, cement plant in February 2022.
Australia: First Graphene has partnered with Suvo Strategic Minerals to develop graphene-enhanced metakaolin for use in cement and concrete production. Metakaolin is a pozzolanic material derived from kaolinite clay. The partners believe that the technology has commercial potential to improve concrete performance and reduce CO2 emissions.
LafargeHolcim Egypt's ECOPlanet green cement reduces CO2 emissions from Alamein Downtown Towers project
09 January 2023Egypt: LafargeHolcim Egypt supplied 8200t of its ECOPlanet reduced-CO2 cement for construction of Alamein Downtown Towers in Alamein City. The producer said that the cement reduced the project's carbon footprint by 45% compared to ordinary Portland cement (OPC). The government contracted China-based China State Construction Engineering Corporation for construction of the five-tower development. Three of the buildings will be residential, while the remaining two will house business and events facilities.