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A new sensor that measures the total air content of concrete while mixing

GCP Applied Technologies, Cambridge, MA, USA


It is well established that freeze-thaw durable concrete often requires proper levels of entrained air. However, this is frequently accompanied by high batch to batch variability since there are many factors that affect the development of an air void system. Furthermore, all concrete has some amount of air, which can be correlated to other concrete properties. A sensor has been developed that can accurately determine the total air content by volume and the temperature of concrete, while the concrete is mixing. This sensor provides continuous, real-time air measurements during the entire mixing process for stationary, wall mixers, which allows precasters to adjust and improve their practices. This paper presents an overview of the technology as well as lab and field correlation data.

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GCP Applied Technologies Inc.
62 Whittemore Avenue
Cambridge, Massachusetts 02140 USA
T +1 617 876 1400

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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