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Home > Publications > International Concrete Abstracts Portal
The International Concrete Abstracts Portal is an ACI led collaboration with leading technical organizations from within the international concrete industry and offers the most comprehensive collection of published concrete abstracts.
Title: Monitoring the Hydration of Cementitious Material by Acoustic Emission
Author(s): Evin Dildar Dzaye, Geert De Schutter, and Dimitrios Aggelis
Publication: Special Publication
Appears on pages(s): 28.1-28.10
Keywords: acoustic emission, capillary pressure, cementitious material, isothermal calorimetry, ultrasonic
Abstract:Studying the mechanisms affecting the very early age hydration as well as the microstructure of cementitious materials is essential to improve concrete performance. Consequently, it is necessary to monitor and understand the early age hydration process.
In this work, continuous acoustic emission (AE), ultrasonic pulse velocity (UPV), and capillary pressure monitoring has been applied on consolidated and non-consolidated cement paste to study the process of hydration mechanism as well as the formation of the microstructure.
Preliminary experiments have presented a large rate of AE activities in the fresh state. Ultrasonic tests exhibited
an increase of pulse velocity during hydration while capillary pressure and heat evolution were also monitored. The purpose of this study is to verify the sensitivity of AE to follow the ongoing processes in fresh cementitious material and the possibility to contribute to a better monitoring of the process as an additional tool.
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