Super fast try. Here is what I did:
-created some stones using debris maker
-scattered them into a mosaic over a plane using CScatter
-added textures (used MultiMap for the stones, some AO for the concrete)
-rendered zdepth, normal map and diffuse
-made all the textures identically tileable in PS
-used zdepth as displacement (the standard 3dsmax, geometry one)
-normal map as bump map
-diffuse as diffuse
-added a white layer using LayeredMtl
-masked it with a noise map, of course this could be some hand made bitmap
This is just an idea, actually first thing I though of. It would definitely require more attention to details and hand crafting. Let me know if you find it useful, I could extend it into a more detailed guide.
Also, I was using some daily builds features.