Cementitious compositions and products.

摘要

An uncured cementitious composition comprising in admixture:-
<UnorderedLists id="ula01" listStyle="none"><ListItem>a) at least one hydraulic cement;</ListItem><ListItem>b) at least one reactive water-soluble polymer which is capable of providing a viscous solution in water at low addition levels;</ListItem><ListItem>c) water in an amount of from 10 to 25 parts by weight of water per 100 parts by weight of the cement; and</ListItem><ListItem>d) a water soluble cross-linking agent capable of effecting chemical cross-links between molecules of the said polymer in the presence of the cement and water.</ListItem></UnorderedLists>