April 22, 2021
Concrete SmartBrief
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Top Story
A new study compares the qualities of various forms of concrete created from geopolymerization of solid industrial waste and byproducts with conventional cement-based concrete. Researchers conclude geopolymer concrete with 750 kilograms per cubic meter of fly ash is the best choice balancing engineering and environmental considerations.
Full Story: MDPI (Switzerland) (4/21) 
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ACI Updates
The largest single source of information on concrete design, construction, and materials. Contains nearly 50 codes and specifications plus 200+ practices (including all guides and reports). Always updated with new titles as they are published. Includes IN-LB and SI Unit codes, specifications, and practices, historical codes and specifications.
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Concrete Innovation
The newly opened Cloudscape of Haikou library in China features fair-faced concrete without any right angles. MAD Architects used a CNC-cut and 3D-printed model of the structure due to its engineering challenges.
Full Story: DesignBoom (4/21) 
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Super-high strength concrete and high-grade steel are being used to build the Infinity Tower in Cairo. The materials for the tower, which has no columns or pillars, are certified by ACI and the International Building Code.
Full Story: Construction Week Online (United Arab Emirates) (4/22) 
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Crews have begun concrete slipforming 11 spar-substructures that will provide support for the wind turbines of an Equinor offshore wind farm in the North Sea. The Hywind Tampen project marks the first time Equinor has used concrete technology for floating wind turbines.
Full Story: ReNews (UK) (4/22) 
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Brunel University London researchers are looking to create and demonstrate a waste-based cement mix that can be 3D printed into modular components for buildings. "Our objective is to decrease the CO2 footprint of printed products against traditional virgin concrete and cementitious mortars, through the development of printable mixtures that will use up to 100% recycled aggregates," said project lead Seyed Ghaffar.
Full Story: Brunel University London (4/21) 
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Legal, Legislative & Regulatory News
Several tax incentives for use of fossil fuel would go away and incentives for sustainable energy would be created under a bill introduced by Senate Democrats. The bill includes a tax credit for facilities producing energy with net-zero or negative carbon emissions and a 30% investment credit for upgrades to the power grid.
Full Story: Engineering News-Record (tiered subscription model) (4/21) 
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Upcoming ACI Events
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  • ICCM2021 Online: ACI/RILEM International Conference on Cementitious Materials and Alternative Binders for Sustainable Concrete – Cosponsored By: American Concrete Institute and RIELM
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April 22 is Earth Day
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