Troubleshooting concrete‑like physics failures in Blender simulations
When a concrete‑like object behaves unexpectedly in a Blender simulation—such as passing through other geometry, collapsing instantly, or not reacting to forces—follow these steps to isolate the problem. Verify the object's collision shape: select the object, open the Physics properties, and ensure the correct collision type (Mesh, Convex Hull, or Compound)