Ground limestone exhibits mixture paste content optimization potential

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Keen on lower carbon alternatives to portland cement-only binders, the U.S. Department of Commerce’s National Institute of Standards and Technology has published Technical Note 1906, Minimizing Paste Content in Concrete Using Limestone Powders — Demonstration Mixtures. Researchers cite target performance levels in concrete mixtures with up to 28 percent lower portland cement content using a binary blend with limestone powder.

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