Freebie: Daz 3D Studio Iray Dirty Tiles Shader by DrBoots
https://www.deviantart.com/drboots/...hader-581082692
Yes, it is for DS but, if you go down the folder tree via Runtime, Textures etc, you'll come to 'Dirty Tiles' folder.
The nice set of basecolor, bump, metallic, normal and roughness mapped PNG textures will be very useful.
Scaling: If applied to eg Poser ground plane, may I suggest using U_Scale & V_Scale of 0.1 to shrink appearance from vast slabs to cubit sized. Also, if you get weird colours, it's an obscure quirk of Poser meeting empty alpha channels. Re-save basecolour etc as JPG, use those...