Construction Research & Technology Gmbh

Akzo Nobel Chemicals International B.v.

Nouryon Chemicals International B.v.

Mark A Bury

James C Smith

Frank Shaode Ong

Rick Paponetti

Darren Gambatesa

Jan Nordin

Stefan Muessig

Fredrik Svensson

Jermaine Simmons

Raymond Fete

Stefan Müssig

James Curtis Smith

Stefan Mussig

Richard Paponetti

An apparatus including: (a) a steam generator having a power output of less than or equal to about 6 boiler horsepower; (b) a steam conduit in fluid communication with the steam generator; (c) a fluid material conduit in fluid communication with a source of a fluid material, wherein the fluid material includes unexpanded, expandable polymeric microspheres; (d) a treatment zone in fluid communication with the steam generator via the steam conduit, and with the fluid material conduit, such that the fluid material is contacted by steam within the treatment zone; and (e) a back pressure generator in fluid communication with the treatment zone, capable of increasing pressure in the treatment zone, which results in expansion of the expandable polymeric microspheres when the fluid material exits the treatment zone.

Apparatus and system for expanding expandable polymeric microspheres

A method of expanding expandable polymeric microspheres including contacting an aqueous slurry including unexpanded, expandable polymeric microspheres with steam in-situ during manufacture of a cementitious composition or article, wherein the aqueous slurry optionally further includes an admixture therefor. A method of manufacturing a cementitious composition or article includes: (i) contacting an aqueous slurry of unexpanded, expandable polymeric microspheres with steam proximate to and/or during said manufacturing of the cementitious composition to create expanded polymeric microspheres; (ii) pre-wetting the expanded polymeric microspheres; and (iii) mixing the pre-wetted, expanded polymeric microspheres with cement and water to form the cementitious composition, wherein the aqueous slurry optionally further comprises an admixture therefor.

Method for manufacturing a cementitious composition

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Middleburg Heights, OH, United States of America

Mark A Bury