W. R. Grace Co.-Conn.

Gcp Applied Technologies Inc.

Charlotte Porteneuve

Leslie A Jardine

Ara A Jeknavorian

Gerard Blond

Lawrence R Roberts

Josephine Ho-Wah Cheung

Benita Dair

Byong-Wa Chun

Compositions and methods for increasing grinding efficiency of cement, cement clinker, raw materials for cement, and other inorganic particles. Use of biomass-derived polyols such as diols, triols, or mixtures thereof, optionally with a conventional grinding aid, cement quality improver, and/or hexavalent chromium reducer, are believed to provide less risk of sludging when compared to glycerides obtained from fossil fuel sources.

Biomass derived grinding aids

Biomass-derived grinding aids

Methods and compositions of the invention involve the use of crude intermediate fermentation broth, derived from industrial glucose fermentation processes prior to completion of purification steps, as additives and admixtures for cementitious compositions.

Gluconate broth for cement and concrete admixture

Exemplary compositions comprise at least one aldopentonic acid, such as xylonic acid; and further comprise a lignin, a lignosulfonic acid or its salt, an additional sugar acid such as a aldohexonic acid or salt, a conventional admixture (such as a polyacrylate superplasticizer, a corrosion inhibitor, a set retard, a set accelerator, etc.), or a mixture thereof. Exemplary methods for obtaining microbiologically or enzymatically converted sugar acids are also described herein.

Beneficiated water reducing compositions

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Boston, MA, United States of America

Charlotte Porteneuve