W. R. Grace Co.-Conn.

Gcp Applied Technologies Inc.

Romain Faivre

Lawrence L Kuo

Eric P Koehler

Byong-Wa Chun

Kati Hazrati

Byong-wa Chun

Izabela Goc-Maciejewska

The present invention provides a fast response method and system wherein one or more comb-type polycarboxylate ether (PCE) polymers, having a cumulative absorptivity coefficient in the range of 40%-75%, are employed as fluidizing admixtures dosed into concrete by and in automated slump monitoring and control systems which iteratively monitors and adjusts the slump of the concrete mix.

Fast response time in slump monitoring systems

The invention relates to compositions and methods for modifying cementitious materials such as by reducing setting time. Polymer compositions of the invention are derived by polyetherifying mono-glycerols, optionally with alkylene glycols, to obtain polyglycerol homopolymers or copolymers, and then carboxylating the obtained polyglycerol homopolymers and/or copolymers with an organic acid having at least two carboxylic functionalities. The set retardation effect of the carboxylated-carboxylic polyglycerol polymer compositions in cementitious materials is reduced is compared to polyglycerol polymer not having the carboxylated-carboxylic groups, while its water reducing ability is maintained without loss of early compressive strength. Cementitious compositions and methods involving the carboxylated-carboxylic polyglycerol are also covered by the invention.

Carboxylated-carboxylic polyglycerol compositions for use in cementitious compositions

Growing community of inventors

Poznan, Poland

Romain Faivre