If FRP is used on a new structure, what happens if water infiltrates through the structural members from cracks in the slab? Does the FRP cause the water to be retained in the structural members?

If the structural member is properly designed, then large cracks that lead to this condition should not occur. However, if this condition occurred for any reason, then FRP should not be used to cover the entire surface. Instead, FRP strips should be used and placed at given spaces to allow the concrete member to “breathe” and moisture to move through the member.