I’ve been messing around with a texture I created for the pavement. I made a high poly pavement slab in Zbrush, and then used that as a base altering it to create some variations with cracks etc. I arranged these as a chunk of pavement in Maya, and projected the detail from the high poly onto a plane to get the normal map. The texture was hand made using some brushes I created from random photos I had taken. I attempted to make it seem more dirty by adding some subtle green in the cracks as a kind of mould or slime, which would of been caused by water from rain combined with the street not being cleaned at all in a long time. The texture can tile from any side so it can be rotated to make the tiling seem less obvious, I also created a variation in the normal map to have a version with less cracks, this version also tiles meaning we could mix and match them.  With 4 sides per chunk and 2 chunks that offers 16 potential different ways the tiles could connect.

High poly slabs:

Maps:

Single slab rendered in Maya:

Tiling test: