Holcim North America gears up Alberta ash harvesting project

Sources: Lafarge Canada Inc., Calgary; CP staff Holcim North America and sister business Geocycle North America are overseeing a premier of beneficiation technology transforming landfilled coal combustion products to Class F fly ash. ECOAsh, the branded material from an Alberta site strategic to Lafarge Western Canada operations, marks the first ash harvesting for concrete end uses under the global Holcim…

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Terra CO2 commences trials of clinker-free OPUS Zero binder concretes

Sources: Terra CO2 Holdings, Golden, Colo.; CP staff Terra CO2 has begun testing concrete mix designs bearing OPUS Zero, a binder finished free of portland cement clinker and produced with globally abundant, silicate-rich feedstocks. Material trials scheduled throughout 2024 involve specimen batching, pumping and engineering property testing, along with demonstration slab and vertical surface or structure placements. Early results indicate…

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