| 摘要 |
The invention relates to a vibro-acoustically effective granular aggregate for materials, e.g. concrete and similar building materials, comprising an external shell (3) with a filler made of a phase transition material (5) that can be switched using internally or externally effective fields, e.g. mechanical stress states, acoustic, electric, or magnetic fields, and at least one compact material which is embedded therein and can vibrate in said filler according to the physical condition of the phase transition material (5), whereby the mechanical state of the surrounding material is characterized and the vibro-acoustic behavior of the surrounding material is influenced. |
