Desert-derived natural pozzolan tests favorably as fly ash alternative

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Sunrise Resources Plc of Cheshire, U.K., reports successful demonstration of a material, mined at the CS Pozzolan-Perlite Project in Nevada, as a substitute for fly ash in concrete. Prior observation of the natural pozzolan entailed mortar specimens, while more recent tests have been conducted on concrete samples and involved a major integrated cement and ready mixed producer.

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Natural pozzolan exhibits cement-optimizing capacity in block and paver mixes

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In a follow up to a November 2013 report on Active Minerals’ Acti-Gel 208, “Rheology modifer, anti-settling agent suits zero slump to SCC mixes,” Concrete Products examines the natural mineral additive’s latest application: Replacement of up to 30 percent of cement in concrete block and paver mixes, netting potential cost savings up to $0.02/unit.

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