Cementitious binder for consolidated fill
AssigneeStandard Slag Cement
InventorWilliam A. Berry
Life of this patent
Estimating the term…
Abstract
Cementitious binder for consolidated fill comprises: (a) about 55 to 97 parts by weight of finely divided water-hardenable cementitious iron blast furnace slag; (b) about 3 to about 45 parts by weight of Class C fly ash; and (c) an alkaline activator elevating the pH of the composition above about 11 in the presence of water, said catalyst being selected from the group consisting of strongly basic alkali metal and alkaline earth metal hydroxides in an amount of about 2 to about 15% by weight based on the total weight of said slag plus said fly ash and normal portland cement powder in an amount of about 3 to about 25% by weight based on the total weight of said slag plus said fly ash.
Claims8
A water-hardenable cementitious material for consolidated fill comprising in admixture an aggregate suitable for use in consolidated fill and a binder the binder, consisting essentially of:
- (a) about 55 to 97 parts by weight of finely divided, water-hardenable, vitrified, cementitious, iron blast furnace slag;
- (b) about 3 to about 45 parts by weight of Class C fly ash;
- and
- (c) an alkaline activator elevating the pH of the composition above about 11 in the presence of water, the activator being calcium hydroxide in an amount of about 2 to about 15% by weight based on the total weight of said slag plus said fly ash.
Dependencies are inferred from the claim text.