The phrase "to expose the concrete" means to reveal or uncover the underlying truth or reality of a situation or problem. It is like removing a layer or covering to see what is truly there. Full definition
The interiors are mostly made up of exposed concrete and limestone with natural wood beams and it has open ceiling to see the countryside. (theluxhome.com)
The open living room / dining room / kitchen features exposed concrete pillars, high - end finishes, and stainless steel appliances. (climbsf.com)
Most of the floors in the dog pens across all three sites have cracks and exposed concrete which was not sealed. (blackhobyah.net)