Advanced Analysis of Acoustic Emission Parameters during the Concrete Hardening for Long Time

摘要

Acoustic emission method can monitor changes in materials behaviour over a long time and without moving one of its components i.e. sensors. This makes the technique quite unique along with the ability to detect crack propagations occurring not only on the surface but also deep inside the material. The acoustic emission method is considered to be a "passive" non-destructive technique, because usually identifies defects while they develop during the test. The acoustic emission method is often used to detect a failure at a very early stage of damage long before a structure completely fails. However, using for monitoring developments during setting and hardening is difficult by this method immediately after making the mixture. The main aims of the article are to show the application of Acoustic Emission method.