Blended Cements - Lafarge NABlended cements deliver substantial performance and environmental . age back to the volcanic pozzolans that the ancient Romans used to make cement. They've been used . their plants, or they can order “prepack- aged” blends from.used cement blend plants,Cement - WikipediaPortland cement blends are often available as . also mixed from the ground components at the concrete mixing plant. . Used as an economic alternative to Portland sulfate-resisting and low-heat cements.
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