Lehigh Hanson seals green message in packaged PLC

Sources: Lehigh Hanson Inc., Irving, Texas; CP staff EcoCemPLC portland limestone cement will arrive at big box and construction supply accounts next month in redesigned bags whose graphics emphasize the material’s key metric: A carbon dioxide emissions factor about 10 percent below that of ordinary portland cement. Evolved packaging dovetails an ongoing Lehigh Hanson commitment to carbon footprint reduction and…

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Key Holcim (US) mill all in on portland limestone cement

Sources: LafargeHolcim U.S. Cement, Chicago; CP staff A Texas concrete materials supply chain fixture, the Holcim (US) Inc. Midlothian plant is the first cement mill in the country to fully convert to production of portland limestone cement (PLC), where fine limestone at 5 percent to 15 percent volumes is ground with clinker. The finished binder exhibits performance comparable to ordinary…

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EPA ‘Clean Trucks Plan’ nixes NOx, embraces zero emissions models

Sources: Environmental Protection Agency; CP staff The Environmental Protection Agency plans a 2022-24 release of rulemakings to extend the sharp reduction of heavy-duty truck emissions realized from the 2010 measure that standardized diesel particulate filter, selective catalytic reduction, and related exhaust treatment system components in on- and on/off-highway fleets. 

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Lehigh Redding moves to mill SCM from CO2-rich kiln emissions

Lehigh Hanson Inc. and Fortera Inc., a Silicon Valley technology developer wise to calcium carbonate chemistry and mineralization, are teaming to commercialize a process with optimal output for an era of greenhouse gas scrutiny: Converting the carbon dioxide gas emitted to the environment at the front end, or calcining phase, of ASTM C150 powder production into a blendable supplementary cementitious…

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CarbonBuilt and CarbonCure teams take $20M global competition

Sources: CP staff; XPrize Foundation, Culver City, Calif.  Processes proved at commercial scale to mineralize and sequester carbon dioxide gas in finished concrete have earned their developers, CarbonBuilt and CarbonCure Technologies, top honors in NRG Cosia Carbon Xprize, a six-year global competition centered on managing and monetizing emissions from coal and natural gas combustion. 

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Golden State cement producers release roadmap to carbon neutral operation

Sources: California Nevada Cement Association, Anaheim; CP staff The California Nevada Cement Association (CNCA) envisions three major pathways for the industry to attain net zero carbon operation by 2045: reducing production process emissions, reducing combustion emissions through fuel switching, and increasing distributed electricity generation.  

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AI-wise software developer probes “CO2 Reduction in Cement Logistics”

Source: Inform Software Corp., Atlanta Inform Software, a provider of artificial intelligence-based optimization programs facilitating improved decision making, processes and resource management across diverse industries, will present a 20-minute webinar, “CO2 Reduction in Cement Logistics,” on February 23, 9 a.m. EST. Participants will learn the true footprint of their cement logistics, the latest truck technology trends and their limitations, how…

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CalPortland moves CNG power upstream, from mixers to bulk tankers

Eyeing deliveries throughout southern California, CalPortland Co. is deploying compressed natural gas-powered bulk tankers as part of strategy to capture fuel economy and lower the net greenhouse gas emissions associated with cement production at its Oro Grande plant. The producer has staged 24 CNG-fueled tractors with double bulk trailers along a slow-fill island station and related fueling infrastructure at the…

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U.S. Geological Survey reveals limits of climate change projections

Sources: U.S. Geological Survey, Department of the Interior; CP staff A new report from the USGS—the indispensable source of portland cement, crushed stone and sand & gravel shipment data—stresses the need to factor uncertainties attending climate change predictions, especially as models link present greenhouse gas emission levels to earth temperature trajectories through the year 2100. 

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CalPortland migrates CNG power from concrete mixers to cement bulk tankers

Sources: CalPortland Co., Glendora, Calif.; CP staff  Eyeing deliveries throughout southern California, CalPortland is deploying a compressed natural gas bulk tanker fleet as part of a strategy to capture fuel economy and lower the net greenhouse gas emissions associated with cement production at its Oro Grande plant. The producer has staged 24 CNG-fueled tractors with double bulk trailers along a…

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