SIZE EFFECT OF FRP TENDONS ON TENSILE PROPERTIES

Abstract

It is known that tensile strength of the brittle materials like FRP tendons has wider dispersion, and depends more significantly on size compared with the ductile materials. However, only few reports have been published.
This papar discusses the influence of specimen length on tensile properties of FRP tendons to make size effect clear. The main experimental factor of the tension tests, specimen length, was decided taking standard testing method, actual prestressed concrete structures and so on into account. It was made clear that the longer specimens had smaller tensile strength and ultimate strain.