Lithium-based concrete admixtures for controlling alkali-silica reactions with enhanced set-time control and processes for making the same
AssigneeFMC Corporation
InventorDavid B. Stokes
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Abstract
A process for making concrete which is stabilized against alkali-silica reactivity (ASR) is provided. The process includes incorporating into the concrete mixture a concrete admixture mixture comprising water, first lithium-containing materials in an amount sufficient to control ASR, and second lithium-containing materials in an amount sufficient for controlling set time, and optionally mineral admixtures and other chemical admixtures for property enhancements exclusive of ASR mitigation and/or set time control, to form the concrete. An admixture for stabilizing concrete against ASR is also provided.
Claims13
A process for making a concrete mixture which is stabilized against alkali-silica reactivity (ASR), the process comprises incorporating into the concrete mixture a concrete admixture comprising first lithium-containing materials in an amount sufficient to control ASR, second lithium-containing materials in an amount sufficient for controlling set time, and optionally, water, and optionally mineral admixtures and chemical admixtures for property enhancements exclusive of ASR mitigation and/or set time control, to form the concrete.
A concrete admixture which stabilizes the admixture against alkali-silica reactivity (ASR) and possesses an increased set time to the admixture, the admixture comprising first lithium-containing materials in an amount sufficient to control ASR and second lithium-containing materials in an amount sufficient for controlling set time.
Dependencies are inferred from the claim text.