High strength concrete for prestressed concrete girders

This paper illustrates that the use of high strength concrete allows increasing the span of prestressed girders with given cross section. It is also indicated that for a given span length, girder spacing can be significantly increased. These benefits are demonstrated by means of numerical examples, which give formulae to calculate the maximum span lengths that can be achieved for both post tensioned girders and precast prestressed girders. The French title for this article is: Betons a hautes performances pour les poutres precontraintes. The German title for this article is: Beton mit hoher Druckfestigkeit fuer Spannbetontraeger. For the covering abstract of the conference see IRRD 851274.