Mixture of silica sols
AssigneeAkzo Nobel N.V.
InventorsPeter Greenwood, Hans Bergqvist, Ulf Skarp
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Abstract
The invention concerns silica sol mixture comprising a first silica sol having a broad particle size distribution, the relative standard deviation being at least about 30% by numbers, and a second silica sol having a narrow particle size distribution having a relative standard deviation lower than about 15% by numbers. The invention also concerns a method for preparing a silica sol mixture and use thereof. The invention further concerns a concrete composition comprising a silica sol mixture and a method for preparing such composition.
Claims18
A concrete or mortar composition comprising a hydraulic binder, aggregates, a silica sol mixture and water, wherein the silica sol mixture comprises a first silica sol having a broad particle size distribution, the relative standard deviation being at least about 30% by numbers, and a second silica sol having a narrow particle size distribution having a relative standard deviation lower than about 15% by numbers.
A method for preparing a concrete composition by mixing aggregates, a hydraulic binder, and a silica sol mixture, before or after addition of water, wherein the silica sol mixture comprises a first silica sol having a broad particle size distribution, the relative standard deviation being at least about 30% by numbers, and a second silica sol having a narrow particle size distribution having a relative standard deviation lower than about 15% by numbers.
An additive to concrete or mortar comprising a silica sol mixture wherein the silica sol mixture comprises a first silica sol having a broad particle size distribution, the relative standard deviation being at least 30% by numbers, and a second silica sol having a narrow particle size distribution having a relative standard deviation lower than about 15% by numbers.
Dependencies are inferred from the claim text.