Detailed text transcripts for TV channel - CNN - 20210626:04:47:00
Typically, chris, that's spalling. >> so, spalling is where rebar, which are the bars inside of cement, attach to moisture and rust and it creates outward pressure that will crack the outer layers of concrete. create a structural issue or not. >> yeah. let me give you an example of that. typically, with a -- with a building like this, you have got balconies and people over the years have put things on those balconies whether it's artificial turf or hard flooring. that tends to trap moisture that deteriorates the concrete surface underneath. once that surface gets degraded, it can affect the re...