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New technology for an efficient increase in early compressive strengths

Ultrasound-assisted concrete production


The requirements for the sustainability and performance of concretes are continuously increasing. Both properties can be improved through optimisation of the concrete mixing process. The following article demonstrates that the application of Power Ultrasound (PUS) during the mixing of the concrete – the Sonocrete technology described here – brings about significant increases in the flowabilities and early compressive strengths for a practically relevant concrete recipe. It was thereby possible to save at least 30% superplasticiser, to use a cement of a lower strength class with the same or better strength development or alternatively to shorten or completely replace the heat treatment. Further investigations into durability show that the carbonation behaviour and freeze/thaw resistance are not negatively affected by an ultrasound-assisted mixing process.

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CPi worldwide journals are trade journals for the concrete and precast concrete industry that are published in 10 different language editions in more than 170 countries. These trade journals, with their practical editorial reporting on research, production and applications, are specifically addressing the decision makers of the concrete and precast concrete industry.

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