Alumina-modified colloidal silica particles, cementitious products containing same, and methods of use thereof
AssigneeIntelligent Concrete, LLC
InventorsJonathan S. Belkowitz, WhitneyLe B. Belkowtiz
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Abstract
Alumina-modified colloidal silica nanoparticles mitigate Alkali Silica Reaction (ASR) in cementitious compositions. Additives containing the nanoparticles are used in methods of reducing ASR in concrete and to form cementitious compositions. Cementitious products, such as concrete, made by these methods are described herein.
Claims28
A method of forming a cementitious composition comprising mixing water, cement and an additive comprising colloidal silica nanoparticles that are at least partially coated in alumina in an aqueous solution.
A method of reducing ASR in concrete comprising mixing into the concrete an additive comprising colloidal silica nanoparticles that are at least partially coated in alumina in an aqueous solution.
Dependencies are inferred from the claim text.