Can concrete tremie mix be used in normal structures?

Tremie is not a "mix" but rather is a method of placing concrete underwater. It would seem to me, and I work in construction, that you would be needlessly adding cost. Why not simply use "normal" concrete for "normal" structures? Here is a link: http://www.concreteconstruction.net/industry-news.asp?sectionID=718&articleID=243445