Displaying items by tag: sustainability
ACT government to use low carbon concrete in future projects
06 September 2024Australia: The Australian Capital Territory (ACT) government has pledged to use low carbon concrete in all future government construction projects, where appropriate, reports Mirage News. This commitment is part of the 'Low carbon concrete policy', designed to cut emissions without significantly raising project costs. The implementation of this policy will begin on 1 January 2025 and will require that designers, engineers and builders provide options for using low carbon concrete options in government projects. This initiative is part of the broader 10-year ACT Sustainable Building Pathway, which aims to embed sustainable practices throughout the building lifecycle.
Minister for Water, Energy and Emissions Reduction, Shane Rattenbury said "Using low carbon concrete is a simple and effective way we can reduce these emissions while supporting local industry. Already in Canberra, we have started using low carbon concrete in significant projects like the new Canberra Hospital expansion and in preparation for Light Rail Stage 2A. This is a fantastic example of how seamlessly low carbon concrete can be integrated into our everyday building projects.”
Ireland mandate for low-carbon concrete comes into effect
02 September 2024Ireland: New regulations effective from 1 September 2024 require all state-funded building projects in Ireland - including roads, schools, and hospitals - to use low-carbon concrete. The directive prohibits the use of CEM I cement, mandating a minimum of 30% replacement of clinker with low-carbon alternatives for public projects.
Cemex France reduces transport emissions from concrete and aggregates by 10% between 2021 and 2023
23 August 2024France: Cemex France reduced the total emissions of CO2 from its concrete and aggregates logistics operations by 10% in the two years between 2021 and 2023. The company achieved this through various initiatives, including equipment upgrades, route optimisation and the substitution of alternative fuels, including hydrogenated vegetable oil in pusher vessels, and biogas where possible. The producer says that the reduction aligns with its FRET21 transport sustainability initiative, as well as its Future in Action 2050 net zero roadmap.
Cemex France is currently preparing to renew or expand its commitment to the FRET21 initiative for another three years.
Betolar patents new accelerator for CEM III/B cements
23 August 2024Finland: Betolar has procured a patent for a new accelerator solution for use in CEM III/B slag cement mixes. The company says that the product enables the achievement of conventional demoulding times in the production of concrete elements using slag cement with a clinker content of 20 – 34%. It will also enable its use in hollow-core slabs and as shotcrete in the mining industry.
President and CEO Tuija Kalpala said "Our patented innovation paves the way for the large-scale use of cement mixtures in the production of concrete elements and products, significantly reducing CO2 emissions."
Heidelberg Materials and Metsä Wood develop alternative precast concrete wall element
16 August 2024Finland/Germany: Heidelberg Materials and Metsä Wood have launched a concrete-based wall element designed to replace conventional walls in construction. The product is comprised of insulation and laminated veneer lumber, sandwiched between two layers of reduced-CO2 concrete. The Cool Down News has reported that the element has 30 – 50% lower CO2 emissions than conventional concrete walls, according to its developers. It also reduces the total weight of the wall by 60%.
Metsä Wood business development manager Håkan Arnebrant said "One of the advantages of this hybrid element is that builders do not have to change their way of building with concrete elements, but can still lower their emissions. At the same time, the walls can be made 50 – 75mm thinner than walls built with concrete elements, which can give quite a few extra square meters in a building."
Gerdau Graphene Unveils NanoCONS graphene-based admixtures
15 August 2024Brazil: Gerdau Graphene has launched NanoCONS, a new line of graphene-based admixtures for concrete. Graphene-Info News has reported that NanoCONS increases the durability and strength of concrete, while lowering its CO2 emissions by 20%, according to the developer. Gerdau Graphene noted that the first product in the line, water-based NanoCONS W104, offers faster drying times, making it well-suited to use in precast concrete production.
Heidelberg Materials Poland inaugurates Katowice construction and demolition materials recycling plant
25 July 2024Poland: Heidelberg Materials has inaugurated its new construction and demolition materials (CDM) recycling plant at Katowice, Silesia. The plant will use a patented crusher to separate and sort 100t/hr of CDM. It will then recycle the materials in new concrete using its ReConcrete circular concrete production technology.
Chief sustainability officer Nicola Kimm said "Thanks to our strong commitment to continuous innovation, we are now introducing a revolutionary and commercially viable technology combining circularity with decarbonisation on our path to net zero. Innovations like this help to accelerate our transformation and highlight our ambition of closing the loop offering circular alternatives for 50% of our concrete products by 2030.”
UK: Low Carbon Materials has participated in a trial project to build roads with lower embodied CO2 emissions. The company supplied its ACLA carbon-negative aggregate for use in repairs to the M11 in Essex. National Highways has reported that CRH subsidiary Tarmac and Sweden-based construction firm Skanska also collaborated in the project.
National Highways’ research, development and innovation director Joanna White said "Solutions like this could have a real impact on our road to net zero carbon, so we are delighted that we have been able to accelerate the development of the product and get it on one of our roads for testing.”
Vulcan Materials Quarry secures environmental approval for Comal County aggregates quarry
22 July 2024US: Vulcan Materials has secured approval from the Texas Commission on Environmental Quality for its upcoming aggregates quarry in Comal County. The approval is based on the company’s water quality protection plan for the 607 hectare site situated in the Edwards Aquifer recharge zone, which supplies water to 2 million people. The plan involves the use of vegetation strips, berms and flood plain areas, while excavating a total 387 hectare (64%) of the site in nine successive stages.
Vulcan Materials said that it plans to operate the site in a ‘safe, socially and environmentally responsible’ manner, and will ‘protect and conserve’ water.
Pan-United launches electric concrete mixer truck
19 July 2024Singapore: Pan-United Corporation has introduced a Sany electric-powered concrete mixer truck into its fleet. The truck has a 350kWh battery with a peak power of 360kW and a two-hour charging time. The move will reduce the CO2 emissions per journey by 45%, in line with Pan-United Corporation’s goal of net zero ready-mix concrete production and distribution by 2050.
Pan-United Corporation CEO Ken Loh said "Pan-United is excited to welcome electric vehicles into Singapore’s built environment industry. We hope to eventually operate a substantial fleet of electric concrete mixer trucks for our day-to-day operations. This step marks an exciting new venture in exploring alternative fuel technology and a deepening commitment to accomplish Pan-United’s aim of being a carbon-neutral ready-mix concrete company by 2050."