Catalina Pacific deploys eight plants, 200+ trucks for record 21K-yd. pour

Catalina Pacific deploys eight plants, 200+ trucks for record 21,000-yd. pour

Sources: Headwaters Inc., South Jordan, Utah; CalPortland Co., Glendora, Calif.; CP staff

Catalina Pacific Concrete delivered 2,120 loads of ready mixed over a 19-hour window, February 15-16, to the Wilshire Grand site in downtown Los Angeles. Executed without a single injury, the operation marked what project officials note is a new volume threshold, 21,200 yd., for a continuous foundation pour.

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Ground limestone-bearing cement nears 50 percent of British Columbia shipments

Sources: Cement Association of Canada (CAC), Ottawa; CP staff

Two years after its launch across Canada, an industry-branded portland cement with up to 15 percent ground limestone content—promoted for reducing carbon dioxide emissions by 10 percent against conventionally milled powder—has gained significant traction among concrete producers and their customers.

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ASTM raises bar to generous threshold for C595’s ground limestone content

Sources: National Ready Mixed Concrete Association; CP staff

In a move that will provide the opportunity for the cement and concrete industries to reduce products’ carbon footprint, a proposal was approved to permit up to 15 percent ground limestone in blended cements under ASTM C595 (Blended Hydraulic Cements), with the resulting product characterized as limestone blended cements. Similar revisions are being made to the equivalent AASHTO standard by the AASHTO Subcommittee on Materials. Under C595, there was previously no specifically stated limit on ground limestone content.

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