wierd smell like soy oil coming from concrete?
I have ground my concrete floor with a 150 pound machine, completely removing all adhesive that held down carpet tiles. It was damp from trapped moisture vapor underneath. I put sodium silicate to seal it. I hoped this might seal the moisture, and this odd smell of soy oil, which is even in the walls and concrete floor that wasn't covered. I wonder if it could be some oil spill in the ground? It used to be farm land some 10 years ago. Or something come up from mines below? Anyone ever come across this??? If I put carpet tiles back down, no adhesive, after about a week, some dark oily stuff starts seeping up out of the concrete... Thanks.. Mark