VCAS 160 is a pure white pozzolan. Pozzolans are value-added supplementary cementing materials that exhibit pozzolanic activity. Comparable to fumed silica and metakaolin when tested in accordance with ASTM C618 and ASTM C1240. Can replace up to 20% of the dry cement weight in a mix.Size: 50 Lb bagPozzolan is a material which, when combined with calcium hydroxide, exhibits cementitious properties. Pozzolans are commonly used as an addition (cement extender) to Portland cement concrete mixtures to increase the quality and long-term strength and other material properties of Portland cement concrete, and in some cases reduce the material cost of concrete. Pozzolans are primarily vitreous siliceous materials which react with calcium hydroxide to form calcium silicates thusly improving the quality; other cementitious materials may also be formed depending on the constituents of the pozzolan.Documentation Technical Bulletin
