FraMCoS 6 2007 Catania, Italy

An experimental analysis on the time-dependent behaviour of a CFRP retrofitting under sustained loads

Over the past few years, the strengthening of concrete structures with fibre reinforced polymer (FRP) composites has become increasingly user-friendly among engineers worldwide. Within this field one of the most relevant topics concerns the durability and the reliability of such…

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Year 2007
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Abstract

Over the past few years, the strengthening of concrete structures with fibre reinforced polymer (FRP) composites has become increasingly user-friendly among engineers worldwide. Within this field one of the most relevant topics concerns the durability and the reliability of such materials, depending strongly on their viscous properties. FRPs, in fact, are made up purely of elastic fibres embedded in highly creep sensi- tive matrices. Most of the data available in literature about FRP creep tests deal with aeronautical/aerospace or mechanical applications, while only few concern civil purposes. In this paper the authors present some ex- perimental results relative to the time-dependent behaviour of FRP pultruded laminates under sustained loads. The experimental set-up simulates the actual bonding conditions occurring in typical retrofitting interven- tions. The results present a part of a two year long experimental programme going on at Salerno University (Italy).