LITHIUM-BASED CONCRETE ADMIXTURES FOR CONTROLLING ALKALI-SILICA REACTIONS WITH ENHANCED SET-TIME CONTROL AND PROCESSES FOR MAKING THE SAME
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United States of America Patent
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Issued Date -
Jan 10, 2013
app pub date -
Jul 3, 2012
filing date -
Jul 6, 2011
priority date (Note) -
Abandoned
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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.
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