Construction Research & Technology Gmbh

Mbt Holding Ag

Daniel Constantiner

Samy M Shendy

Frank T Gay

Jeffrey T Champa

Daniel G Millette

Kevin Hutchings

Johann Goldbrunner

William Hanley

A cementitious composition including at least one cementitious and/or pozzolanic material and at least one desugared molasses. A method of preparing a cementitious composition including forming a mixture of water, at least one cementitious and/or pozzolanic material and at least one desugared molasses. An admixture for cementitious compositions including: (i) at least one desugared molasses; and (ii) at least one alkanolamine and/or at least one polyhydroxyalkylamine.

Cementitious composition and admixture

When hydrated, calcium sulfoaluminate cements form ettringite. A retarder which retards this reaction is at least one of phosphono alkyl carboxylic acid and a salt of a phosphono alkyl carboxylic acid. Additionally, the retarder can comprise at least one of a carboxylic acid and a salt of a carboxylic acid. The retarder can be prepared as an admixture for addition to cement, or the retarder can be included in a cementitious formulation. Also, other cements, such as portland cement, can be included with the calcium sulfoaluminate cementitious formulation. A method of retarding the set of a calcium sulfoaluminate cementitious formulation without substantially reducing achievable compressive strength, comprises providing in the cementitious formulation, a retarder comprising a component being at least one of phosphono alkyl carboxylic acid and a salt of a phosphono alkyl carboxylic acid.

Retarder for calcium sulfoaluminate cements

A method is provided for incorporating a foaming agent into mixtures of particulates and then forming a foam within the mixture to increase the flowability of the particulates. A method is also provided for excavating solid particulates, incorporating a foaming agent into mixtures of solid particulates, and then forming a foam within the mixture to increase the flowability of the particulates. The particulates can be transported through pipelines or boreholes. Examples of particulates include, but are not limited to, mine tailings, ores, sand, coal, soils, clays, silts, aggregates, and mixtures thereof.

Transport of solid particulates

Growing community of inventors

Beachwood, OH, United States of America

Daniel Constantiner