I transcribe the seismic waveform and the sound waveform recorded during Great Hanshin-Awaji Earthquake (occurred on January 17, 1995) on some cracked concrete boards.
Concrete is quite strong as a material and has a very long life, but on the other hand it is too brittle to keep a building by itself without some anchor materials such as reinforcing steel rods.

Ballpoint pen on concrete, Acrylic plate