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Cemex USA and Concrete Supply Co. have announced a Charlotte-based joint venture with 2 million-yd. production capacity across North Carolina and South Carolina ready mixed plants. Subject
to closing of transactions anticipated later this year, it will be majority owned by Concrete Supply Holdings Co., which will act as the managing member.
A new method for permanently storing carbon dioxide emissions generated from fossil fuels and other industrial processes is at the heart of a mineral carbonation pilot plant to be built at the University of Newcastle’s Institute for Energy and Resources.
Examining prospects for increasing the volume of fly ash beyond the commonplace 15 to 20 percent range, NIST Technical Note 1812 points to shortfalls in the industry benchmark document for Class C and Class F product: ASTM C618-12, Standard Specification for Coal Fly Ash and Raw or Calcined Natural Pozzolan for Use in Concrete.
Adding fine limestone powder to fly ash-rich mixtures can improve finished concrete performance when measured against more conventional formulations, according to a report, “Ternary blends for controlling cost and carbon content,” in the August issue of the American Concrete Institute’s Concrete International.
Seaforth, Ontario precaster Design Concrete Systems Ltd. has taken delivery of a space-saving, vertical mold for production of wall panels up to 35- x 8-ft. The Elematic Battery mold especially suits the producer’s Sound By Design Barrier programs for transportation agencies and private commercial or residential projects: Panels previously limited to 14- x 4-ft. can now be delivered in larger dimensions to cut contractors’ labor requirements and crane time.