Carbon fiber is a very high tensile strength material that’s almost impossible to stretch. Because it doesn’t stretch, it can be ‘glued’ to concrete walls to keep them from bending or bowing inwards.
Carbon fiber straps have become a fairly common method for reinforcing basement walls. If installed properly, they can effectively hold the center of the wall in place.
Since carbon fiber straps are not attached to anything but the wall itself, they should NOT be used if your basement walls have started to slide in at the bottom or lean in at the top.