Cementitious mixture containing high pozzolan cement replacement and compatabilizing admixtures therefor
AssigneeMBT Holding AG
InventorsJohn Moreau, Runhai Lu, Jeffrey R. Bury
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Abstract
A cementitious mixture comprises a hydraulic cement; greater than about 10% by weight of a pozzolanic cement replacement selected from fly ash, slag, natural pozzolans, and mixtures thereof, based on the weight of said hydraulic cement and cement replacement; and a compatabilizing admixture, wherein the compatabilizing admixture comprises a compatabilizing polycarboxylate polymer dispersant capable of acting as a water reducer, in combination with an accelerator.
Claims70
A cementitious mixture comprising a hydraulic cement;
- greater than about 10% by weight of a pozzolanic cement replacement selected from the group consisting of fly ash, slag, natural pozzolans, and mixtures thereof based on the weight of said hydraulic cement and cement replacement;
- and a compatabilizing admixture, wherein the compatabilizing admixture comprises a polycarboxylate polymer dispersant, in combination with an accelerator for concrete, wherein the polycarboxylate polymer dispersant comprises a polycarboxylate backbone polymer containing polyoxyalkylene group side chains.
A compatabilizing admixture for cementitious mixtures containing hydraulic portland cement and greater than about 10 percent pozzolanic cement replacement by weight of the portland cement and cement replacement, comprising a polycarboxylate polymer dispersant, in combination with an accelerator for concrete, wherein the polycarboxylate polymer dispersant comprises a polycarboxylate backbone polymer containing polyoxyalkylene group side chains.
A method for preparing a cementitious material comprising mixing a hydraulic cement with a pozzolanic cement replacement selected from fly ash, slag, natural pozzolans, and mixtures thereof, and a compatibilizing admixture, wherein the compatabilizing admixture comprises a polycarboxylate polymer dispersant, in combination with an accelerator for concrete, wherein the polycarboxylate polymer dispersant comprises a polycarboxylate backbone polymer containing polyoxyalkylene group side chains.
Dependencies are inferred from the claim text.