Procedural Smooth Concrete Material (Blender Tutorial) - YouTube
Chocofur Chocofur Concrete Solid 04 - Free Blender and Cycles concrete Shader 04 created by Chocofur! Improve your interior visualization renderings using our Cycles shaders and textures.
Make a Photo-realistic Concrete Material with Cracks in Blender 2.82 - YouTube
Procedural Concrete Material (Blender Tutorial) - BlenderNation
Procedural Concrete Material (Blender Tutorial) - YouTube
ArtStation - Painted concrete wall material (substance designer)