Displaying items by tag: pozzolan
Global Cement and Concrete Association announces Innovandi Open Challenge 2023 shortlist
30 June 2023World: 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.”
CR Minerals to produce pozzolans from mining waste
17 November 2022US: CR Minerals has signed a contract with mining company Rio Tinto for the supply of mineral waste from the latter's subsidiary US Borax's boron mining operations in California. CR Minerals will use the waste to produce pozzolans to replace cement in local concrete production.
CR Minerals president Jeffrey Whidden said "We have been working with Rio Tinto for several years now to bring this concept to life. Taking what was once considered waste streams and turning them into usable products for the construction materials industry is part of the vision of our company."
Saudi Arabia: Al Kifah Ready-Mix & Blocks (KRB) has announced the upcoming launch of its ConGreen reduced-CO2 concrete products range at the Big 5 Saudi construction summit on 28 – 31 March 2022. ConGreen concretes replace clinker with lower-carbon materials such as pozzolan and use Canada-based Carbon Cure Technologies’ embedded recycled CO2 technology to reduce its carbon footprint by up to 30% compared to conventional Ordinary Portland Cement (OPC) concretes. In addition to this, KRB says that ConGreen concretes also provide improved workability and pumpability properties, as well as being highly durable, with high passing and finishability. They have very low rapid chloride permeability (RCP), water absorption and water permeability properties and low heat of hydration.
General Manager Nigel Harries said “We are committed to driving energy efficiency and addressing the global emission challenges. We aim to help build a better community and environment-friendly facilities by producing high-quality concrete, such as ConGreen, that has a reduced environmental impact and is characterised by its high performance, durability and sustainability, with a low carbon footprint as compared with standard concrete.”