This texture is FREE for personal and commercial use!
It can be downloaded at
https://www.texturecan.com/details/206/
From the grid pattern, we know that they are waffle slabs made of reinforced concrete. They grid pattern allows concrete ribs running in 2 directions perpendicular to each other on its underside.
As it appears in public area, dust and dirt can be found on the surface. Besides, there are imperfection at junctions between slabs.
This is a seamless and tileable PBR CG texture for 3D artists.
Each package usually includes a Base Color Map / Diffuse Map, Normal Map, Roughness Map, Displacement Map, Metallic Map (Metals Only) and Ambient Occlusion Map.
The texture maps are applicable to Blender, ZBrush, Sketchup, Maya, 3D Max, Cinema 4D, Unity, Unreal etc.