Coal ash recycling rate increases in 2020, reversing previous years’ declines

The American Coal Ash Association 2020 Production and Use Survey shows 59 percent, or 40.8 million tons, of the 69.2 million tons of coal ash produced during 2020 was recycled—up from 52 percent in 2019 and marking the sixth consecutive year that more than half of such material produced in the United States was beneficially used rather than disposed.  ACAA…

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Industry leaders ace climate audit

By Don Marsh Three of the top five global cement, aggregate and concrete producers made the 2021 Climate Disclosure Project A List, reflecting transparency in environmental impact, greenhouse gas (GHG) emissions management and water resource metrics. Cemex S.A.B. de C.V., HeidelbergCement AG and Holcim AG are among 200 A List/Climate category performers from a pool of 10,000-plus companies. London-based Climate…

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Cemex, CRH, Heidelberg, Holcim school GHG emissions auditors

Sources: Cemex S.A.B. de C.V., Monterrey, Mexico; Holcim AG, Zug, Switzerland; HeidelbergCement AG, Germany; CP staff Three of the top five global cement, aggregate and concrete producers have made the 2021 Climate Disclosure Project A List, reflecting transparency in environmental impact, greenhouse gas emissions management and water resource metrics. Cemex, HeidelbergCement and Holcim are among 200 A List/Climate category performers…

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Fly ash consumption down, overall coal ash recycling rate up

Sources: American Coal Ash Association, Denver; CP staff The American Coal Ash Association 2020 Production and Use Survey shows 59 percent, or 40.8  million tons, of the 69.2 million tons of coal ash produced during 2020 was recycled—up from 52 percent in 2019 and marking the sixth consecutive year that more than half of such material produced in the United States…

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Concrete Batching: Buy vs. Build

Modernizing the business of ready mix, part 1 of 3 Many concrete producers are considering the merits of upgrading their software and hardware for concrete batching. Some are even considering a DIY approach. Recently, one regional company owner asked me, “What would it take to update all of our 100-plus batching plants to a modern system, and why can’t we…

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Adjust-to-grade RimRiser makes fast work of manhole component leveling

Paving or public works crew-friendly device features unique, bolt-adjusted riser technology to ease the process of leveling cast iron manhole rings, inlet frames/grates and precast concrete tops. Offered through precast concrete producers, RimRiser solutions use a patented four-bolt system that allows a single crew member to precisely level the riser to the specified grade using a standard 5/8-in. nut driver. …

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Sound carbon guidance

By Don Marsh An energy market-driven nonprofit, RMI, offers credible perspective in its just-released Concrete Solutions Guide, geared to construction interests taking stock of the carbon dioxide emissions factor behind their project materials, products and methods. Posted at www.rmi.org, the document presents specific opportunities for “a nearly ubiquitous material with a sizable climate impact” and expands on the need to…

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Sysdyne Pioneer platform raises batch control to the cloud

Sysdyne Technologies presents its latest tool for ready mixed concrete producers, Pioneer Cloud Batch, as the first cloud-native concrete batch control system. Unveiled at World of Concrete 2021 as an alternative to traditional, local computer-hosted solutions, the platform brings batch software online and makes loading, weighing and mixer truck charging sequences visible to individual or multiple users. 

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MATURING MONITORING SENSORS

A survey of wireless devices and software for tracking in-field concrete temperature and strength development COMMAND Center The COMMAND Center concrete temperature and maturity system is used to measure and log concrete temperature history, calculate maturity, and evaluate in-place strength. COMMAND Center’s fully autonomous data collection option allows producers, builders, subcontractors, testing firms, owners or owner agencies, engineers, and architects to…

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Value Tested

RMC Research & Education Foundation books 30 years of cutting-edge programs to advance the concrete industry BY JULIE GARBINI In 1991, the RMC Research & Education Foundation was founded with a modest ambition: To fund the purchase of a million-pound testing machine at the National Ready Mixed Concrete Association’s (NRMCA) A.H. Smith Research Laboratory in College Park, Md. Industry leaders…

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