Effect of carbonate-containing additives on the properties of composite cements

The effect of limestone and dolomite additives on the properties of composite cements: water demand, setting time, consolidation deformation, the content of free Ca(OH)2 in the products of hardening, strength and resistance to carbon dioxide attack are examined. It is shown that calcium and magnesium carbonates, introduced in the cement as mineral supplements, are chemically active and are involved in the formation of hydrate phases, which leads to lower content of free calcium hydroxide in the cement stone.

Author: V.K. Kozlova, A.M. Manokha, A.A. Likhosherstov, E.V. Manuilov, E.Y. Malova

Section: Science and production

Keywords: composite Portland cement, carbonate supplements, slow setting, the products of hydration, strength, corrosion resistance